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Unique name Text definition Notes superclass 1 superclass 2 superclass 3 actuated valve An operated valve where the operator is an actuator. operated valve actuator yoke A valve yoke that supports the valve actuator on the bonnet assembly. valve yoke adjustable choke valve A choke valve that is made with adjustable flow/pressure restriction (i.e. has a valve operator by which it can be adjusted.) choke valve adjustable flow control valve with bypass A flow control valve that is adjustable, and with bypass. flow control valve air release valve A float valve that is made for gas or vapour release from a liquid system. float valve angle check valve A check valve and an angle valve that deviates from the in- line design, i.e. with a body shape designed to adjust the flow direction with a specified angle relative to the straight through-flow an in-line valve would have provided for. angle valve check valve angle control valve A control valve and an angle valve with a corresponding actuator intended to manipulate a stream of fluid in response to a difference between a signal from an external sensing element and a setpoint and with input of energy from an external source. angle valve control valve actuated valve angle globe valve A globe valve and an angle valve that deviates from the in- line design, i.e. with a body shape designed to adjust the flow direction with a specified angle relative to the straight through-flow an in-line valve would have provided for. angle valve globe valve angle valve A valve that has valve ports which are not in-line. valve angle valve 45 degree An angle valve that has valve port ends at 45 degree angle to each other. angle valve angle valve 60 degree An angle valve that has valve port ends at 60 degree angle to each other. angle valve angle valve 90 degree An angle valve that has valve port ends at 90 degree angle to each other. angle valve angle valve body A valve body that is intended for an angle valve. valve body anti cavitation control valve A control valve that can be used to prevent cavitation. control valve

Unique name Text definitionNotes superclass 1superclass ...traeger.com/technical/valve_definitions.pdf · Unique name Text definitionNotes superclass 1superclass 2superclass 3

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Page 1: Unique name Text definitionNotes superclass 1superclass ...traeger.com/technical/valve_definitions.pdf · Unique name Text definitionNotes superclass 1superclass 2superclass 3

Unique name Text definition Notes superclass 1 superclass 2 superclass 3actuated valve An operated valve where the

operator is an actuator.operatedvalve

actuator yoke A valve yoke that supports thevalve actuator on the bonnetassembly.

valve yoke

adjustable chokevalve

A choke valve that is made withadjustable flow/pressurerestriction (i.e. has a valveoperator by which it can beadjusted.)

choke valve

adjustable flow controlvalve with bypass

A flow control valve that isadjustable, and with bypass.

flow controlvalve

air release valve A float valve that is made forgas or vapour release from aliquid system.

float valve

angle check valve A check valve and an anglevalve that deviates from the in-line design, i.e. with a bodyshape designed to adjust theflow direction with a specifiedangle relative to the straightthrough-flow an in-line valvewould have provided for.

angle valve check valve

angle control valve A control valve and an anglevalve with a correspondingactuator intended to manipulatea stream of fluid in response toa difference between a signalfrom an external sensingelement and a setpoint and withinput of energy from an externalsource.

angle valve control valve actuatedvalve

angle globe valve A globe valve and an anglevalve that deviates from the in-line design, i.e. with a bodyshape designed to adjust theflow direction with a specifiedangle relative to the straightthrough-flow an in-line valvewould have provided for.

angle valve globe valve

angle valve A valve that has valve portswhich are not in-line.

valve

angle valve 45 degree An angle valve that has valveport ends at 45 degree angle toeach other.

angle valve

angle valve 60 degree An angle valve that has valveport ends at 60 degree angle toeach other.

angle valve

angle valve 90 degree An angle valve that has valveport ends at 90 degree angle toeach other.

angle valve

angle valve body A valve body that is intended foran angle valve.

valve body

anti cavitation controlvalve

A control valve that can be usedto prevent cavitation.

control valve

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anti-blowout stem A valve stem that is made with ashoulder, positively retained bythe body or bonnet (to avoid thatthe stem, under certainoperating conditions,accidentally can blow out).

valve stem

austenitic stainlesssteel ball valve

A ball valve that is also anaustenitic stainless steel valve.

austeniticstainlesssteel valve

ball valve

austenitic stainlesssteel gate valve

A gate valve that is also anaustenitic stainless steel valve.

austeniticstainlesssteel valve

gate valve

austenitic stainlesssteel valve

A steel valve that is made withpressure containing parts inaustenitic stainless steel, andwith the trim parts of equivalentor better material.

steel valve

axial piston valve A piston valve that has thepiston axis in the line of flow.

piston valve piston checkvalve

axial valve disc A globe valve closure memberthat has its polar axis in the lineof flow.

globe valveclosuremember

axial valve stem A valve stem that is designedwith an axial movement.

valve stem

backpressureregulator valve

A valve that can be used tocontrol and regulate thebackpressure within a containeror a system.

valve regulator

balanced relief valve A pressure relief valve thatincorporates means ofminimizing the effect of backpressure on the operationalcharacteristics of the valve(opening pressure, closingpressure and relieving capacity).

pressurerelief valve

balanced relief valvecombined

A balanced relief valve that isequipped with balancing bellowsand an auxiliary balancingpiston.

balancedrelief valve

balanced relief valveusing bellows

A balanced relief valve that isequipped with balancingbellows. The balancing bellowsminimizes the effects ofbackpressure and prevents theprocess fluid from entering thespring chamber.

balancedrelief valve

balanced relief valveusing piston

A balanced relief valve that isequipped with a balancingpiston.

The balanced pistondesign minimizes theeffects of backpressureand prevents the processfluid from entering thespring chamber.

balancedrelief valve

balanced valvebellows

A physical object that is abellow-shaped sleeve intendedto fit around a valve closure discholder for regulating the backpressure.

physicalobject

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balanced valve piston A physical object that is a pistonused in a balanced relief valve.

This design is used forregulation ofbackpressure.

physicalobject

ball check valve A lift check valve that is havinga free spring loaded ball closingon a spherical seat.

lift checkvalve

ball type globe valvedisc

A globe valve closure memberthat has a ball shape.

globe valveclosuremember

ball valve A rotary valve that has a ballclosure member.

rotary valve

ball valve body A valve body that is intended fora ball valve.

valve body

ball valve bonnet A valve bonnet that is intendedfor a ball valve.

valve bonnet

ball valve closuremember

A valve closure member that isspherical and can rotate aboutan axis perpendicular to thedirection of flow.

Also furnished with achannel through whichthe fluid can flow whenthe valve is not in closedposition.

valve closuremember

ball valve stem seal A valve stem seal that isintended for a ball valve.

valve stemseal

barstock valve A valve that has a bodymachined from a piece of solidmaterial - usually a needle orglobe valve.

valve

barstock valve body A valve body that is intended fora barstock valve.

valve body

bellow sealed gatevalve

A gate valve that is having abellow-sealed gland.

gate valve

bevelled disc A globe valve closure memberthat is a disc with a bevelledseating surface.

globe valveclosuremember

bi-directional valve A valve that is designed to sealagainst flow or pressure fromeither direction.

valve

bleed valve A valve that can be used todraw off a fluid.

valve

blending valve A valve that can be used toregulate flow input(s), typicallyof multi-port design.

valve

blind ram A ram that is located on a well'sblow-out preventer stack, and isoperated hydraulically to closein or shut in a well threatenedwith excessively high pressure.

When actuated, the twoelements of the closuremechanism cometogether, sealing off thewell bore. It is called"blind ram" because theram does not close onthe pipe, as does a piperam or shear ram.

ram

block and bleed valve A block valve that is also ableed valve.

A block and bleed valvehas one seat whichprovides a seal, and ableeder line and valvethat are tapped into theblock valve's bonnet.

block valve bleed valve

block valve A valve that can be used toisolate possible leaks in case ofan emergency situation.

valve

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blow down valve A valve that can be used forrapid depressurizing of a highpressure system.

valve

blow off valve A valve that can be used todepressurize a piping system orequipment.

valve

bolted ball valvebonnet

A ball valve bonnet that is boltedto the valve body.

bolted valvebonnet

ball valvebonnet

bolted body ball valve A split body ball valve that hasthe body parts bolted together.

split body ballvalve

bolted gate valvebonnet

A gate valve bonnet that isbolted to the valve body.

bolted valvebonnet

gate valvebonnet

bolted split ball valvebody

A split ball valve body that hasthe parts of the body heldtogether using bolts.

split ball valvebody

bolted valve bonnet A valve bonnet that is bolted tothe valve body.

valve bonnet

bolted valve bonnetcap

A valve bonnet cap that isbolted onto the valve bonnet.

valve bonnetcap

bolted valve gland A valve gland that is bolted tothe valve bonnet.

valve gland

bolted valve nozzle A valve nozzle that is bolted. valve nozzlebottom entry ball valveA ball valve that has a single

piece body in which the ball isassembled from the oppositeside to the stem and held inposition by a seat/retainer ringfastened to the body.

one piece ballvalve

ball valve

butterfly control valve A butterfly valve that isequipped with an actuator thatmanipulates a stream of fluid inthe response to a signal from anexternal sensing element andwith input of energy from anexternal source.

butterfly valveactuatedvalve

butterfly valve A rotary valve that has a closuremember of a disc type with ashaft parallel, or near parallel, tothe plane of the disc, with anaxis of rotation transverse to theflow direction.

rotary valve

butterfly valve body A valve body that is the valvebody for a butterfly valve.

valve body

butterfly valve closuremember

A valve closure member thathas the shape of a disc and isintended to be installed in abutterfly valve.

valve closuremember

bypass valve A valve by which a stream offluids is directed through abypass, i.e. shunted past fluidfunctional unit(s) through whichit normally flows.

valve

cage guided globevalve

A globe valve that has a cageguided closure member.

globe valve

cage guided pistonvalve

A cage guided globe valve thatis a cage guided globe valvewhere the plug is a piston.

cage guidedglobe valve

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cage guided valve A plug valve that is a plug valvewhere the plug is guided by acage.

plug valve

cage trim A physical object that is acylinder with openings in thewall and which surrounds andguides the plug closure memberof a plug type globe valve.

physicalobject

cage trim control valveA control valve that has a cagetrim, which is a cylinder withopenings in the wall, and whichsurrounds and guides the plugclosure member of a plug typeglobe valve.

control valve actuatedvalve

check valve A valve that permits fluid to flowin one direction only.

valve one way flowregulator

check valve body A valve body that is intended fora check valve.

valve body

check valve closuremember

A valve closure member that isintended to prevent back flow.

valve closuremember

check valve disc A check valve closure memberthat is a disc intended for acheck valve.

check valveclosuremember

choke valve A valve that can be used toobstruct the fluid passing inside,and has the ability to reduce thepressure from the inlet port tothe outlet port.

valve

clamp gate valve A gate valve that has body andbonnet held together by a U-boltclamp which facilitatesstripdown for overhaul.

gate valve

compact gate valve A gate valve that is havingcompact dimensions.

gate valve

composition discglobe valve

A disc globe valve that isintended for coarse regulationand tight shutoff in servicescontaminated with solidparticles.

Particles will embed insoft disc and seal whilstpreventing seat damage.

disc globevalve

conduit gate valve A conduit valve of the gate valvetype.

gate valve conduit valve

conduit rising stemgate valve

A through conduit gate valvethat is equipped with a risingstem.

throughconduit gatevalve

conduit valve A valve with a circular hole inthe closure member that willpass a sphere no smaller thanspecified for the applicablenominal size (less thetolerance), except that the endpreparation of weld-end valvesmay require a smaller bore atthe weld end to pro

valve

cone valve A valve that is a valve where thevalve seat is conically shaped.

valve

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control valve A valve that can be used tomodify (regulate) the fluid flowrate in a process control system.

It usually includes anactuator, which respondsto a signal from thecontrolling system andchanges the position ofthe flow controllingelement in the valve.

valve

conventional reliefvalve

A pressure relief valve that hasits closing force provided by aspring.

pressurerelief valve

conventional safetyrelief valve

A pressure relief valve that isequipped with vented bonnetwhere its performancecharacteristics are directlyaffected by changes of the backpressure.

pressurerelief valve

conventional swingcheck valve

A swing check valve that hasthe swing arm hinged outsidethe flow path.

swing checkvalve

cryogenic controlvalve

A control valve that is designedto withstand cryogenic operatingconditions, and that is equippedwith an actuator thatmanipulates a stream of fluid inthe response to a signal from anexternal sensing element andwith input of energy from anexternal s

control valve actuatedvalve

cryogenicvalve

cryogenic valve A valve designed to operatewithin the temperature range -50 C to -196 C.

valve

deluge valve A control valve that is intendedto operate at high temperature,and admit water into a delugesystem.

It is fail safe, kept closedby pressurised gas, andis typically made ofbronze.

control valve

deluge valve with afff A deluge valve that is installedin a deluge sprinkler system,which spreads AFFF (AqueousFilm Forming Foam) out in anarea of an installation in case offire.

deluge valve

depressurising valve A valve that can be used todepressurise a system.

valve

diaphragm checkvalve

A check valve that is a checkvalve in which the closuremember is a specially shapeddiaphragm allowing forwardflow.

check valve diaphragmvalve

diaphragm valve A membrane valve that is amembrane valve where theclosure member is a resilientdiaphragm being forced againsta port.

membranevalve

diaphragm valve body A valve body that is intended fora diaphragm valve.

valve body

diaphragm valvebonnet

A valve bonnet that is intendedfor a diaphragm valve.

valve bonnet

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diaphragm valveclosure member

A valve closure member that isa diaphragm intended for adiaphragm valve.

valve closuremember

differential pressureregulator valve

A valve that can be used toregulate a system pressure inorder to obtain a predefineddifferential pressure.

valve regulator

directional solenoidvalve

A solenoid valve that operatesin only one direction.

solenoidvalve

disc globe valve A globe valve that has a disctype plug closure member.

globe valve

diverter valve A valve that is a valve withmultiple ports intended to divertflow in several directions andprevent intermixing.

valve

double ball checkvalve

A ball check valve that isprovided with two balls.

ball checkvalve

double block andbleed valve

A block and bleed valve that isalso a double block valveprovided with a means ofventing the space between theseats.

block andbleed valve

double blockvalve

double block valve A block valve that has twoseats, each of which provides aseal.

The seats may isolatewith the pressuredifferential acting in thesame or in the oppositedirections, depending onthe design.

block valve

double disc butterflyvalve

A butterfly valve that has twodisc closure members.

butterfly valve

double disc globevalve

A disc globe valve that has twodisc type plug closure members.

disc globevalve

double expandingwedge gate

A wedge gate that is equippedwith two parallel faced gatesseparated by an expandingwedge which loads each gateagainst its fixed seats.

wedge gate

double seated globevalve

A globe valve that has twoglobes and two seats.

globe valve doubleseated valve

double seated valve A valve that has two valveseats.

valve

down hole safetyvalve

A valve that is intended forsubsurface control/checkoperation.

valve safety valve

drag valve A cage guided globe valve thatis equipped with a perforatedcage trim intended for highpressure drop, low noiseapplications.

cage guidedglobe valve

drain valve A valve that can be used todrain empty a piping system,storage tank, or similar.

The drain valve istypically installed at thelowest point of thesystem to allow drainingby gravity.

valve

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drip drain valve A drain valve that can be fittedto a drip leg (or other type ofcondensate trap) to allowblowdown (evacuation ofcondensate from system).

drain valve

dual disc swing checkvalve

A swing check valve that isequipped with two half discsmounted on a shaft transverseto the center of the valve.

The discs respondautomatically to the fluidflow, permitting fluid toflow in one direction only.

swing checkvalve

dual plate wafer checkvalve

A wafer check valve that isequipped with two half discsmounted on a shaft transverseto the center of the valve.

The discs respondautomatically to the fluidflow, permitting fluid toflow in one direction only.

wafer checkvalve

dual plate wafer checkvalve long pattern

A wafer check valve that is adual disc swing check valveequipped with fluid flow swingopen dual discs/plates, and haslong pattern design.

dual discswing checkvalve

wafer checkvalve

eccentric ball closuremember

A ball valve closure memberthat has an off centre trunnionand/or stem to provide camaction which urges it against theseat.

ball valveclosuremember

eccentric ball valve A ball valve that is a ball valvewhere the ball has an off centretrunnion and/or stem to providecam action which loads itagainst the seat.

ball valve

eccentric butterflyvalve

A butterfly valve that is abutterfly valve with the closuredisc offset or double offset fromthe stem polar axis.

butterfly valve

eccentric full bore ballclosure member

An eccentric ball closuremember that has a full boreopening.

eccentric ballclosuremember

eccentric reducedbore ball closuremember

An eccentric ball closuremember that has a reducedbore.

eccentric ballclosuremember

eccentric rotating disccontrol valve

A control valve that uses arotating disc as closing element,and with a design that causesthe disc to take a slightlyeccentric path during actuation.

actuatedvalve

control valve

eccentric rotating discvalve

A valve that has a closingmember which is an eccentricrotating disc.

valve

emergency shut downvalve

A valve that is assigned to act incase of emergency.

valve

end entry ball valve A one piece ball valve that hasthe ball assembled from oneend of the bore and held inposition by a seat/retainer ringfastened to the body.

one piece ballvalve

ball valve

end entry ball valvebody

A one piece ball valve body thathas the ball entered from theend of the valve.

one piece ballvalve body

ball valvebody

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end entry split ballvalve body

A split ball valve body that hasthe inlet located at the end.

split ball valvebody

equal percentagecage trim

A cage trim that is designed withan equal percentage openingcharacteristic.

cage trim

excess flow valve A valve that is designed to closeautomatically when the flowexceeds a specified rate.

valve

excess flow valvebody

A valve body that is intended foran excess flow valve.

valve body

excess flow valveclosure member

A valve closure member that isintended for an excess flowvalve.

valve closuremember

expanding conduitgate valve

A through conduit gate valvethat has an expanding slab.

throughconduit gatevalve

expanding valve plug A plug valve closure memberthat has a plug of paralleldesign, which incorporates asplit plug with an internal wedgemechanism.

plug valveclosuremember

expanding wedgegate valve

A split wedge gate valve thathas a closure member whichconsists of two parallel facedgates, separated by anexpanding wedge, which loadseach gate against its fixed seat.

split wedgegate valve

fail close valve A valve that is designed toautomatically return to closedposition/condition in the event ofa failure.

valve

fail open valve A valve that is designed toautomatically return to openposition/condition in the event ofa failure.

valve

fixed choke valve A choke valve that has no valveoperator by which it can beadjusted, i.e. a choke valvewhere the flow/pressurerestriction is fixed.

choke valve

fixed flat disc A globe valve closure memberthat is a round flat disc which isfixed to the stem.

globe valveclosuremember

fixed globe valve plug A globe valve plug that has afixed connection to the stem.

globe valveplug

fixed valve needle A valve needle that is fixed tothe stem and rotates with it.

valve needle

flanged ball valve A ball valve that has flangedends.

ball valve

flap valve A swing check valve that isequipped with a hinged disc orflap, sometimes leather orrubber faced, intended for lowpressure applications.

swing checkvalve

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flexible wedge gatevalve

A wedge gate valve that has agate designed to permit flexingof sealing faces to ensurealignment parallel with theirseats and to avoid thermalwedging.

wedge gatevalve

flexible wedge insidescrew rising stem buttwelding end gatevalve

A flexible wedge inside screwrising stem gate valve that hasbutt welding ends.

flexiblewedge insidescrew risingstem gatevalve

flexible wedge insidescrew rising stemflanged end gatevalve

A flexible wedge inside screwrising stem gate valve that hasflanged ends.

flexiblewedge insidescrew risingstem gatevalve

flexible wedge insidescrew rising stem gatevalve

A flexible wedge gate valve thathas the threaded portion of thestem under the gland packing.The stem rises via threads inthe valve body/bonnet.

flexiblewedge gatevalve

flexible wedge insidescrew rising stemthreaded end gatevalve

A flexible wedge inside screwrising stem gate valve that hasthreaded ends.

flexiblewedge insidescrew risingstem gatevalve

flexible wedge insidescrew rising stemwelded bevelled endgate valve

A flexible wedge inside screwrising stem butt welding endgate valve that has a weldedbevelled end body.

flexiblewedge insidescrew risingstem buttwelding endgate valve

flexible wedge insidescrew rising stemwelded plain end gatevalve

A flexible wedge inside screwrising stem butt welding endgate valve that has a weldedplain end body.

flexiblewedge insidescrew risingstem buttwelding endgate valve

flexible wedge outsidescrew and yoke risingstem butt welding endgate valve

A flexible wedge outside screwand yoke rising stem gate valvethat has butt welding ends.

flexiblewedgeoutside screwand yokerising stemgate valve

flexible wedge outsidescrew and yoke risingstem flanged end gatevalve

A flexible wedge outside screwand yoke rising stem gate valvethat has flanged ends.

flexiblewedgeoutside screwand yokerising stemgate valve

flexible wedge outsidescrew and yoke risingstem gate valve

A flexible wedge gate valve thathas a threaded portion of thestem isolated from the processmedia by the gland packing, andthe stem rises via a threadednut in the yoke.

flexiblewedge gatevalve

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flexible wedge outsidescrew and yoke risingstem threaded endgate valve

A flexible wedge outside screwand yoke rising stem gate valvethat has threaded ends.

flexiblewedgeoutside screwand yokerising stemgate valve

flexible wedge outsidescrew and yoke risingstem welded bevelledend gate valve

A flexible wedge outside screwand yoke rising stem buttwelding end gate valve that hasbutt welded bevelled end body.

flexiblewedgeoutside screwand yokerising stembutt weldingend gatevalve

flexible wedge outsidescrew and yoke risingstem welded plain endgate valve

A flexible wedge outside screwand yoke rising stem buttwelding end gate valve that hasbutt welded plain end body.

flexiblewedgeoutside screwand yokerising stembutt weldingend gatevalve

float valve A self acting control valve thatusually is operated by a floatmechanism to regulate ormaintain a liquid level in a tank.

self actingcontrol valve

float valve (internal) A self operating valve that isoperated by an internal floatmechanism.

self operatingvalve

float valve withmechanical link

An operated valve that isoperated by an external floatmechanism with a mechanicalconnection.

operatedvalve

floating ball closuremember

A ball valve closure memberthat is supported by the closuremember seat ring only, and freeto move relative to the stem.

ball valveclosuremember

floating ball full boreclosure member

A floating ball closure memberthat has a full bore opening.

floating ballclosuremember

floating ball reducedbore closure member

A floating ball closure memberthat has a reduced boreopening.

floating ballclosuremember

floating ball valve A ball valve that has a floatingball closure member.

ball valve

flow control valve A control valve that can be usedto control a flow in a pipe.

control valve

flow control valve,adjustabletemperature &pressurecompensated

A flow control valve that controlsthe flow of a substance in apipe; an adjustable choke withtemperature and pressurecompensation.

flow controlvalve

flow nozzle A nozzle with a smooth entryand a sharp exit

nozzle

fluid regulator A physical object that isintended to permit, obstruct,regulate or divert fluid flow.

physicalobject

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flush bottom valve A globe valve that is designed tominimise pocketing, primarily fordischarging liquid from low pointof tank.

globe valve

foot valve A check valve that is intended toprovide an open inlet for totalimmersion on a pump suctionline.

Often fitted with a filter orstrainer.

check valve

foot valve with strainer A foot valve that is intended toprovide an open inlet for totalimmersion on a pump suctionline.

foot valve

four port valve A multiport valve that has fourports.

multiportvalve

four way valve A multi way valve that is madewith four separate paths of flow.

multi wayvalve

full bore ball valve A ball valve that has a full boreball closure member.

This means that theclosure member, whenadjusted to fully openposition, brings norestrictions to the valve'sthrough-flow area.

ball valve full borevalve

full bore valve A valve in which the opening ofthe closure member is bigenough to allow a sphere equalto the valve's nominal size topass through the closuremember.

Bore approximatelyequivalent to the pipebore.

valve

full opening swingcheck valve

A swing check valve that has adisc which swings completelyclear of the bore in the openposition.

swing checkvalve

full borevalve

gate control valve A control valve that is a gatevalve and an actuated valve.

actuatedvalve

control valve gate valve

gate valve A valve that is a valve where theclosure member is a gate ordisc with a linear motionparallel, or nearly parallel, to theplane of flat seats, which aretransverse to the direction offlow.

valve

gate valve body A valve body that is intended fora gate valve.

valve body

gate valve boltedbonnet with integralyoke

A bolted gate valve bonnet thatis equipped with an integralyoke.

bolted gatevalve bonnet

gate valve boltedbonnet with separateyoke

A gate valve bolted bonnet thathas a separate yoke.

bolted gatevalve bonnet

gate valve bonnet A valve bonnet that is intendedfor a gate valve.

valve bonnet

gate valve closuremember

A valve closure member that isintended for a gate valve.

valve closuremember

gate valve stem seal A valve stem seal that isintended for a gate valve.

valve stemseal

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gate valve yoke A valve yoke by which the valveoperator (actuator or handwheel) is supported rigidly to thebonnet assembly of a gatevalve.

valve yoke

gauge valve A valve that can be used inconnection with an indicatinginstrument, for instance anisolating valve for a level gauge.

valve

gland follower A physical object that is a glandcomponent in direct contact withthe packing.

physicalobject

globe control valve A control valve that is a globevalve and an actuated valve.

actuatedvalve

control valve globe valve

globe valve A valve that is a valve where theclosure member is a disc orpiston operating with linearmotion normal to the flat orshaped seat.

valve

globe valve body A valve body that is intended fora globe valve.

valve body

globe valve bonnet A valve bonnet that is intendedfor a globe valve.

valve bonnet

globe valve closuremember

A valve closure member that isintended for a globe valve.

valve closuremember

globe valve disc A globe valve closure memberthat is a disc intended for aglobe valve.

globe valveclosuremember

valve disc

globe valve plug A globe valve closure memberthat is tapered or cylindrical inshape.

globe valveclosuremember

governor valve A valve that can be used tocontrol a flow, and can be eitherof single or multi-port design.

valve

hand operated valve An operated valve that isintended to be opened andclosed manually.

operatedvalve

hand wheel A physical object that typicallyconsists of a rim connected to ahub by spokes, which is used tomanually operate anotherphysical object, requiring thewheel to be turned.

physicalobject

hand wheel operatedgearbox

A gear box that is driven by ahand wheel, typically a wormgear.

gear box

hard faced seat A valve seat that has a hardfacing or coating to providegood sealing surfacesresistance to wear, wiredrawing, galling, and abrasion.

valve seat

hard seated ball valve A ball valve that has primaryseating of metallic, ceramic,composition (Carbon/metal), orother non-resilient materials toprovide hard wearing faces.

ball valve

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high differentialpressure control valve

A control valve that is intendedto operate when thedownstream pressure is muchlower than the upstreampressure.

actuatedvalve

control valve

high pressure reliefvalve

A relief valve that is venting offhigh pressure gas to theatmosphere.

High pressure in thiscontext is typically p>30bar.

relief valve

high temperaturecontrol valve

A control valve that is intendedto withstand high temperatureoperating conditions.

actuatedvalve

control valve

hose gate valve A gate valve that has inletand/or outlet connectionsintended for hose attachment.

gate valve

hose globe valve A globe valve that has inletand/or outlet connectionsintended for hose attachment.

globe valve

hydraulic directionalcontrol valve

A slide valve that is designed tooperate in hydraulic systems, inwhich openings are covered oruncovered by a sliding part.

slide valve

inlet valve A valve that can be located inan inlet.

valve

integral valve seat A valve seat that is integral inthe valve body.

valve seat

iris valve A valve that has a multipleleaved closure member whichcan be moved towards thecentre of the valve bore until itforms a tight, solid barrier.

valve

jacketed valve A valve that has a jacket toallow heating/cooling medium tobe applied to the valve tomaintain some properties of thefluid.

valve

jacketed valve body A valve body that is intended fora jacketed valve.

valve body

jacketed valve bonnet A valve bonnet that is for ajacketed valve.

valve bonnet

knife gate A gate valve closure memberthat is having a narrow parallelgate with a shaped edge forcutting through glutenous mediaor slurries.

gate valveclosuremember

knife gate valve A gate valve that has a narrowparallel gate with a shaped edgeindented to cut throughglutenous media or slurrieswhen closing.

gate valve

lift check valve A check valve that is a checkvalve in which the closuremember is lifted from the seatduring forward flow.

E.g. ball, piston, nozzlecheck, and foot valves.

check valve

linear cage trim A cage trim that has a linearopening characteristic.

cage trim

lined butterfly valve A butterfly valve that has thebody internally lined.

butterfly valve

lined diaphragm valve A diaphragm valve that has thebody internally lined.

diaphragmvalve

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lined plug valve A non lubricated plug valve thathas a body which is internallylined.

nonlubricatedplug valve

low noise controlvalve

A control valve that is designedto generate low noise levelsduring operation.

actuatedvalve

control valve

lubricated plug valve A plug valve that has groovedseating areas and passagewaysfor lubricant injection whichreduces operating torque andassist sealing.

plug valve

lubricated valve plug A plug valve closure memberthat needs lubrication or sealantto reduce friction, provide portsealing and to unseat the plug intapered design.

plug valveclosuremember

manual control valve A valve that can be used formanual regulation of flow (i.e.regulation without auxiliarypower, only human power).

valve

manual valveoperating device

A valve operating device that isintended to be driven by humanpower.

valveoperatingdevice

manually operatedvalve

A valve that is regulated withhand power.

valve

membrane controlvalve

A control valve that is also amembrane valve and anactuated valve.

actuatedvalve

control valve membranevalve

membrane valve A valve that is a valve where theclosure member is a flexiblemembrane.

valve

mixing valve A control valve that usually isself-operating and can use acontrol element to regulate flowinput(s).

Mixing valves are alsoused for temperaturecontrol in conjunctionwith a thermostat.

control valve

motor operated valve An operated valve that isopened and closed with amotor.

operatedvalve

motor operated valveactuator

A valve actuator that is drivenby an electrical motor.

valve actuator

mud discharge valve A valve that is assigned torelieve muddy substances.

valve

mud tank plug valve A valve that is assigned tohandle muddy substances, andis connected to a mud tank.

valve

mud valve A valve that is assigned tohandle muddy substances.

valve

multi way valve A valve that has multiple pathsof flow through itself.

valve

multiple seat controlvalve

A control valve that is a alsomultiple seat valve and anactuated valve.

actuatedvalve

control valve multiple seatvalve

multiple seat valve A valve that has more than twoseats.

valve

multiport valve A valve that has three or moreports arranged to switch flow.

valve

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narrow seat type disc A globe valve closure memberthat is a disc with a reducedopening.

globe valveclosuremember

needle valve A globe valve that has a closuremember with the shape of aconical plug (needle) whichcloses into a small seat.

Typically used for flowmetering or damping ofpressure fluctuations oninstruments, e.g.pressure gauge.

globe valve

non lubricated plugvalve

A plug valve that is notdepending on the injection oflubricant or sealant for operationand seating.

plug valve

non lubricated valveplug

A plug valve closure memberthat is incorporating mechanicaldesign features to reducefriction between the plug andthe plug face and body seatduring operation withoutlubrication.

E.g. by lifting the plug, or,in the split plug type, bywithdrawing the plughalves from the seat priorto rotation.

plug valveclosuremember

non rising valve stem A rotating valve stem that hasthe valve closure member risingon a threaded portion of thestem within the valve body andbelow the gland packing.

rotating valvestem

non vented valvebonnet

A valve bonnet that is solid. valve bonnet

non-return valve A valve that allows flow in onedirection only.

valve

offset valve disc A butterfly valve closuremember that has a disc with itspolar axis offset the line of flow.

butterfly valveclosuremember

valve disc

one piece ball valve A ball valve that has the body inone piece; the ball beingassembled from one end andheld by a retainer ring whichmay also include a valve seat.

ball valve

one piece ball valvebody

A ball valve body that is madefrom one piece of material. Theball may be assembled from thetop, bottom or from the end ofthe valve body.

ball valvebody

one way flow regulator A fluid regulator that permitsfluid to flow in one directiononly.

fluid regulator

on-off valve A control valve that only has twodefined positions, being fullyopen and fully closed.

actuatedvalve

control valve

operated valve A valve that includes an externalmeans of operation. (E.g.handwheel / lever / actuator.)

valve

packed valve bonnetlever

A valve bonnet lever that issealed to the bonnet.

valve bonnetlever

parallel double discgate

A parallel gate that is equippedwith double parallel faced discsseparated by an expandingwedge.

parallel gate

parallel eccentricvalve plug

A parallel valve plug that is ofparallel half plug design.

parallel valveplug

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parallel expandingvalve plug

A parallel valve plug thatconsists of two parallel plughalves.

parallel valveplug

parallel gate A gate valve closure memberthat has slide gate or disc withparallel seating faces.

gate valveclosuremember

parallel gate valve A gate valve that is equippedwith a parallel slide gate or discclosure.

gate valve

parallel lined valveplug

A parallel non lubricated valveplug that is internally lined.

parallel nonlubricatedvalve plug

parallel lubricatedvalve plug

A parallel valve plug that isintended to be lubricated orsealed to reduce friction and toprovide port sealing.

parallel valveplug

lubricatedvalve plug

parallel non lubricatedvalve plug

A parallel valve plug that isdesigned to operate withoutlubrication.

parallel valveplug

nonlubricatedvalve plug

parallel plug valve A plug valve that is equippedwith a parallel valve plug.

plug valve

parallel slab gate A parallel gate that is having asingle parallel sided gate.

parallel gate

parallel sleeved valveplug

A parallel non lubricated valveplug that is cylindrical and isintended to suit a sleeved valvebody.

parallel nonlubricatedvalve plug

parallel slide valve A parallel gate valve that isequipped with a spring-loadeddouble disc closure.

parallel gatevalve

parallel valve plug A plug valve closure memberthat has the shape of acylindrical plug.

plug valveclosuremember

penstock valve A gate valve that is intended tohandle large volumes of water,designed with a rectangulargate mounted in a frame fixed toa wall or bulkhead.

gate valve

pilot operated reliefvalve

A pressure relief valve that usesa pilot valve to indirectly activatethe main valve.

pressurerelief valve

pilot valve A valve that can be used in fluidsystems to control the supply ofdriving fluid to an actuator (i.e.of another valve).

valve

pinch valve A membrane valve that iscomprising a flexible tube, eitherexposed or enclosed in a body.The tube is pinched to close bymechanical means.

membranevalve

pinch valve body A valve body that is intended fora pinch valve.

valve body

piston check valve A lift check valve that has a freegravity or spring loaded pistontype closure member.

lift checkvalve

piston type disc A check valve closure memberthat has the shape of a piston.

check valveclosuremember

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piston valve A globe valve that is a globevalve where the closuremember is a piston.

globe valve

plain valve bonnetlever

A valve bonnet lever that isplain.

valve bonnetlever

plate check valve A check valve that has severalmetallic membranes which allowforward flow, but close toprevent reverse flow.

check valve

plug control valve A control valve that is also aplug valve and an actuatedvalve.

actuatedvalve

control valve plug valve

plug globe valve A globe valve that is a globevalve in which the closuremember is a tapered plug.

globe valve

plug valve A rotary valve that has a quarterturn action in which the closuremember is a cylindrical ortapered plug which operates byrotating on its axis and sealingagainst a downstream seat.

rotary valve

plug valve body A valve body that is intended fora plug valve.

valve body

plug valve bonnet A valve bonnet that is for a plugvalve.

valve bonnet

plug valve closuremember

A valve closure member thathas the shape of a plug and isintended for a plug valve.

valve closuremember

plug valve with liftingplug

A non lubricated plug valve thatcontains a plug that is liftedclear of the seat during rotationfrom open to close to reduceoperating torque.

nonlubricatedplug valve

pneumatic directionalcontrol valve

A slide valve that is intended tooperate in a pneumatic system,and in which openings arecovered or uncovered by asliding part.

slide valve

pneumatic valveactuator

A valve actuator that is drivenby air.

valve actuatorpneumaticactuator

poppet valve A disc globe valve that is a discglobe valve where the operatingmechanism is a non-rotatinglinear action.

disc globevalve

pressure balancedplug valve

A lubricated plug valve that hasinternal passageways designedto reduce the unbalancedpressure load on the plug inorder to ease operation.

lubricatedplug valve

pressure balancedtapered lubricatedvalve plug

A tapered lubricated valve plugthat needs lubrication or sealantto reduce friction, provide portsealing, and to reduce theunbalance pressure load on theplug.

taperedlubricatedvalve plug

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pressure balancedtapered lubricatedvalve plug round port

A pressure balanced taperedlubricated valve plug that has around port.

pressurebalancedtaperedlubricatedvalve plug

pressurecompensatedadjustable flow controlvalve with bypass

An adjustable choke valve thatis pressure compensated andhas a bypass.

adjustablechoke valve

pressure energizedvalve seat

A valve seat that has limitedmovement, and that isenergized by line pressurewhich provides the seating toload against the closuremember.

valve seat

pressure maintainingvalve

A self actuated pressure controlvalve that maintains theupstream line pressure withinspecified limits.

self actuatedpressurecontrol valve

pressure reducingvalve

A self actuated pressure controlvalve that is equipped with aninternal pressure sensingelement that reduces theupstream line pressure to a setlevel downstream, andmaintains the reduced pressureirrespective of changes inupstream pressure.

self actuatedpressurecontrol valve

pressure regulatorvalve

A valve that can be used toregulate the pressure in acontainer or system.

valve regulator

pressure relief valve A relief valve that is anautomatic pressure relievingdevice actuated by the staticpressure upstream of the valve.

relief valve

pressure-vacuumrelief valve

A pressure relief valve that isintended to release excesspressure or admit pressure toprevent a vacuum forming whenfilling or emptying a pipeline ortank.

pressurerelief valve

process isolationvalve

A valve that can be used toisolate a process from anotherprocess.

valve

quarter turn valve A rotary valve that is a rotaryvalve where the rotation of theoperating mechanism is limitedto 90 degrees.

rotary valve

quick exhaust valve A valve that is connected to aspecial actuator on a secondvalve to enable quick exhaust.

The quick exhaust valveis designed to quicklydump gas from thepressurized actuator inorder to stroke theactuated valve veryrapidly.

valve

quick opening cagetrim

A cage trim that has a quickopening characteristic.

cage trim

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radiused disc A ball type globe valve disc thathas a non-spherical radiusedseating surface.

ball typeglobe valvedisc

ram A physical object that is aclosure mechanism intended fora blow-out preventer stack. Themain part is a hydraulicallyoperated type of valve designedto close in a well as with aconventional valve or to closeon tubing or drill pipe andmaintain high-p

physicalobject

reduced bore ballvalve

A ball valve that has a reducedbore ball closure member, i.e.where a sphere of opening sizecan not pass through the valve.

ball valve reduced borevalve

reduced bore checkvalve

A swing check valve that has asmaller opening (by flap seat)than full bore.

swing checkvalve

reduced borevalve

reduced bore valve A valve that is a valve where theopening of the closure memberis reduced compared to theremaining flow path through thevalve (i.e. the fully openedclosure member is like a"bottleneck" between wider in-and outlets).

valve

reduction valve A valve that can be used toreduce the pressure of themedium flowing through thevalve.

valve

reduction valve selfacting

A reduction valve that can beused as a choke valve activatedby the backpressure in thesystem it is operating.

reductionvalve

choke valve

regular disc globevalve

A disc globe valve that has a flatdisc closure element.

disc globevalve

regular double discrising stem gate valve

A split wedge gate valve that isconforming to the API 6D Figure4.1 design.

split wedgegate valve

relief valve A self operating valve that is setto open at a certain pressurelevel to prevent the pressure ina container or system fromreaching unsafe levels.

self operatingvalve

relief valve body A valve body that is intended fora relief valve.

valve body

relief valve bonnet A valve bonnet that is intendedfor a relief valve.

valve bonnet

relief valve bonnetwith cap

A relief valve bonnet that has acap.

relief valvebonnet

relief valve bonnetwith lever

A relief valve bonnet that has alever.

relief valvebonnet

relief valve closuredisc

A valve closure disc that is usedin a relief valve.

valve closuredisc

relief valve closuredisc holder

A valve closure disc holder thatis used in a relief valve.

valve closuredisc holder

relief valve closuremember

A valve closure member that isintended for a relief valve.

valve closuremember

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relief valve closuremember assembly

A relief valve closure memberthat consists of a valve closuremember holder and a valvedisc.

relief valveclosuremember

relief valve convergingnozzle

A relief valve nozzle that has alarger area inlet than outlet. Thisgives a high velocity flow.

relief valvenozzle

relief valve full nozzle A relief valve nozzle that has theentire "wetted" inlet tract(approach channel) formed fromone piece.

relief valvenozzle

relief valve nozzle A valve nozzle that is intendedfor use in a relief valve.

valve nozzle

relief valve semi-nozzle

A relief valve nozzle that has aseating ring fitted to the end ofthe inlet tract (approachchannel). The top of this seatingring forms the seat of the valve.

relief valvenozzle

remote operated valveA valve that can be opened andclosed via a non-local controlsystem.

valve

renewable valve seat A valve seat that is intended tobe a replaceable maintenanceitem.

valve seat

rising stem ball valve A ball valve that is single seatedand designed to seal by usingthe valve stem to mechanicallywedge the valve's ball into astationary seat effecting abubble tight seal.

ball valve single seatedvalve

rising valve stem A rotating valve stem that hasthe threaded portion of the stemisolated from the process mediaby the gland packing, and thestem rises via a threaded nut inthe yoke.

rotating valvestem

rotary disc valve A parallel slide valve that has anoffset shaft which slides a discacross the valve seat to open orclose.

Designs include a singledisc closure and a doubledisc closure in which thediscs are separated by aspring. Upstreampressure loads thedownstream disc againstits seat.

parallel slidevalve

rotary gate valve A gate valve that is manuallyoperated by a lever.

gate valve

rotary star valve A valve that has vanes intendedto control streams of solids. It isusually motor driven.

valve

rotary star valve body A valve body that is intended fora rotary star valve.

valve body

rotary star valveclosure member

A valve closure member that isintended for a rotary star valve.

valve closuremember

rotary valve A valve that is a valve where theclosure member has a rotatingaction. The axis of rotation isusually normal to the flow.

valve

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rotating valve stem A valve stem that rotates whenthe valve is operated.

valve stem

rubber lined butterflyvalve

A lined butterfly valve that hasthe rotational axis of the discconcentric with the shaft axis,and where the rubber lining ofthe body forms the valve seat.

lined butterflyvalve

rubber seated wedgegate valve

A wedge gate valve that has arubber coated wedge closurethat seals against the valve port.

wedge gatevalve

safety relief valve A relief valve that automaticallyrelieves a pressure systemwhere the pressure exceeds aset limit and which closes whenpressure falls below the setlimit.

It is by design a full liftpressure relief valveintended for gas or steamsafety service.

relief valve

safety valve A pressure relief valve that isactuated by the static pressureupstream of the valve, andcharacterized by rapid fullopening or pop action.

pressurerelief valve

sampling valve A valve that can be used to takesamples from a vessel or pipingsystem.

valve

saunders diaphragmvalve

A diaphragm valve that is madeaccording to Saunders originaldesign, or equivalent.

diaphragmvalve

screw down checkvalve

A check valve that is a checkvalve where the closuremember can be tightenedagainst the seat.

check valve

screwed body ballvalve

A ball valve that has a screwedvalve body.

ball valve

screwed valve bonnet A valve bonnet that is screwedto the valve body.

valve bonnet

screwed valve bonnetcap

A valve bonnet cap that isscrewed onto the valve bonnet.

valve bonnetcap

screwed valve gland A valve gland that is threaded,usually internally, and screwedinto the valve bonnet stuffingbox, rather than flanged andbolted.

valve gland

sealed one piece ballvalve

A one piece ball valve that has asingle piece body in a weldedconstruction.

one piece ballvalve

self acting controlvalve

A control valve that is a selfoperating valve with a built inactuator operating without inputof signal or energy from externalsources.

control valve self operatingvalve

actuatedvalve

self actingtemperature controlvalve

A self acting control valve that isa valve modulating a predefinedupstream or downstream fluidflow operated by the processtemperature.

self actingcontrol valve

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self actuated pressurecontrol valve

A self acting control valve that ismaintaining a predefinedupstream or downstream fluidflow operated by the processpressure.

self actingcontrol valve

self operating valve A valve that includes a means ofoperation (e.g. spring / gravity /fluid pressure / counterbalance), and is not dependingon an external source of energy.

valve

shear ram A ram that is located on a well'sblow-out preventer stack, and isfitted with chisel-like jaws thatare hydraulically operated.When the ram is closed on thepipe, the jaws or blades cut thepipe, permitting the uppersection to be removed from theBOP s

ram

single plate wafercheck valve

A wafer check valve that has asingle plate and is intended tobe installed between flanges.

wafer checkvalve

single plate wafercheck valve longpattern

A single plate wafer check valvethat is a conventional swingcheck valve with long patterndesign.

wafer checkvalve

conventionalswing checkvalve

single platewafer checkvalve

single plate wafercheck valve shortpattern

A single plate wafer check valvethat is a conventional swingcheck valve with short patterndesign.

wafer checkvalve

conventionalswing checkvalve

single platewafer checkvalve

single seated valve A valve that has only one seat. valveslab gate valve A through conduit gate valve

that has a single parallel sidedgate normally sealed by floatingseats.

The floating slab gateuses the natural force ofline pressure to obtain adynamically tightdownstream seal in high-pressure differentialapplications. Low-pressure sealing isaccomplished with coilsprings that energize theseat and push it againstthe

throughconduit gatevalve

slam shut valve A control valve that has a discwhich is held open against theflow and closes automaticallywhen released.

A slam shut valve fulfillssimilar safety functionsas an excess flow valve,but requires externalsignals to initiateoperation.

actuatedvalve

control valve

sleeve lined plugvalve

A non lubricated plug valve thathas a sleeve of PTFE or similarpolymer material fitted into thevalve body in the plug seatingand sealing area.

nonlubricatedplug valve

slide gate valve A gate valve that opens andcloses a passageway by slidingover a port.

gate valve

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slide valve A valve that opens and closes apassageway by sliding over aport.

valve

slide valve body A valve body that is intended fora slide valve.

valve body

slide valve closuremember

A valve closure member that isintended for a slide valve.

valve closuremember

soft seated ball valve A ball valve that has primaryseats manufactured fromelastomer, polymers and similarresilient or semi-resilientmaterials.

ball valve

soft seated wedgegate valve

A wedge gate valve that hasprimary seats manufacturedfrom elastomer, polymers andsimilar resilient or semi-resilientmaterials.

wedge gatevalve

solenoid valve A valve that has linear actionwhich is fitted with a solenoid forquick operation.

valve

solenoid valve body A valve body that is intended fora solenoid valve.

valve body

solenoid valve closuremember

A valve closure member that isintended for a solenoid valve.

valve closuremember

solid wedge disc A wedge gate that is made fromone piece.

wedge gate

solid wedge gatevalve

A wedge gate valve that has asolid (non flexible) wedge andstem in one piece.

wedge gatevalve

solid wedge insidescrew rising stemextended end gatevalve

A solid wedge inside screwrising stem gate valve that hasan extended end body.

solid wedgeinside screwrising stemgate valve

solid wedge insidescrew rising stemflanged end gatevalve

A solid wedge inside screwrising stem gate valve that has aflanged end body.

solid wedgeinside screwrising stemgate valve

solid wedge insidescrew rising stem gatevalve

A solid wedge gate valve thathas a conical wedge with athreaded portion of the stemunder the gland packing. Thestem rises via threads in thevalve body/bonnet.

solid wedgegate valve

solid wedge insidescrew rising stemthreaded end gatevalve

A solid wedge inside screwrising stem gate valve that has athreaded end body.

solid wedgeinside screwrising stemgate valve

solid wedge insidescrew rising stemwelded bevelled endgate valve

A solid wedge inside screwrising stem welded end gatevalve that has a weldedbevelled end body.

solid wedgeinside screwrising stemwelded endgate valve

solid wedge insidescrew rising stemwelded end gate valve

A solid wedge inside screwrising stem gate valve that has awelded end body.

solid wedgeinside screwrising stemgate valve

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solid wedge insidescrew rising stemwelded plain end gatevalve

A solid wedge inside screwrising stem welded end gatevalve that has a welded plainend body.

solid wedgeinside screwrising stemwelded endgate valve

solid wedge outsidescrew and yoke risingstem butt welding endgate valve

A solid wedge outside screwand yoke rising stem gate valvethat has a butt welding endbody.

solid wedgeoutside screwand yokerising stemgate valve

solid wedge outsidescrew and yoke risingstem extended endgate valve

A solid wedge outside screwand yoke rising stem gate valvethat has an extended end body.

solid wedgeoutside screwand yokerising stemgate valve

solid wedge outsidescrew and yoke risingstem flanged end gatevalve

A solid wedge outside screwand yoke rising stem gate valvethat has a flanged end body.

solid wedgeoutside screwand yokerising stemgate valve

solid wedge outsidescrew and yoke risingstem gate valve

A solid wedge gate valve thathas a threaded portion of thestem isolated from the processmedium by the gland packing.The stem rises via a threadednut in the yoke.

solid wedgegate valve

solid wedge outsidescrew and yoke risingstem threaded endgate valve

A solid wedge outside screwand yoke rising stem gate valvethat has a threaded end body.

solid wedgeoutside screwand yokerising stemgate valve

spherical disc A ball type globe valve disc thathas a spherical seating surface.

ball typeglobe valvedisc

spiral sock valve A membrane valve that controlsflow of powders by means of atwisted fabric tube or sock.

membranevalve

split ball valve body A ball valve body that can besplit, thus allowing service to beperformed on the closuremember, valve interior, etc.

ball valvebody

split body ball valve A ball valve that has a bodywhich can be split into two ormore pieces, allowing service tobe performed on the closuremember, valve interior, etc.

ball valve

split wedge gate valve A wedge gate valve that ishaving a wedge comprising oftwo parts in order to provideflexibility and resistance tothermal wedging.

wedge gatevalve

spring controlled valveactuator

A valve actuator that has aspring which acts as the triggerto open or close the valve.

valve actuator

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spring-loadedconstant downstreampressure valve

A self actuated pressure controlvalve that acts against a springpressure to maintain a constantdownstream pressure.

self actuatedpressurecontrol valve

sprinkler control valve A valve that can be used tocontrol the flow of fluid to asprinkler system.

valve

squeeze valve A membrane valve that consistsof a flexible tube enclosed in abody. The tube is pinched toclose by a pressurising fluid inthe body cavity.

membranevalve

steel valve A valve in which the pressurecontaining parts are made fromsteel, and the trim parts ofequivalent or better material.

valve

stem connector A physical object that is shapedas a clamp, in two pieces,intended to connect a valvestem and an actuator stem.

physicalobject

stem enclosure A physical object that is ahousing surrounding the stem ofa rising stem valve.

physicalobject

enclosure

stem journal A feature that is a protrudingpart of a stem shaped to supportthe connection of a handwheelor wrench.

feature

stop check valve A lift check valve that iscombining the self-actingoperation of a check valve withthe manual action of a globevalve.

lift checkvalve

straight throughpressure relief valve

A relief valve that is a reliefvalve of straight body design,usually with small bore forinstrumentation purposes.

relief valve

straight valve body A valve body that is straight, i.e.the centerlines perpendicular tothe ends are in-line with nooffset.

valve body

straightway valve A valve that is straight, i.e. thecenterlines perpendicular to theends are in-line with no offset.

valve

subsea choke valve A choke valve that is specificallyintended by design for use in asubsea service.

choke valve

swing check valve A check valve that is a checkvalve where the closuremember is a disc which swingsfreely on a hinge and whichopens automatically when flowis established and closesautomatically when flow ceasesor is reversed.

check valve

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swing check valvewith outside lever andweight attachment

A swing check valve that is aswing check valve whose actionis controlled by an outside leverand external weight to provideadditional force.

swing checkvalve

swing type disc A check valve closure memberthat is consisting of a swingingdisc, hinged at the top.

check valveclosuremember

swivelling flat disc A globe valve closure memberthat is a round, flat shaped discattached to the stem, so that itcan rotate relative to it.

globe valveclosuremember

swivelling globe valveplug

A globe valve plug that has aconnection to the stem whichallows the valve plug to rotateindependently of the rotation ofthe stem.

globe valveplug

swivelling needle A valve needle that has theshape of a conical needle, andis loosely attached to the stem.

valve needle

tank valve A valve that can be used inconnection with a hook-up to a(storage) tank.

valve

tapered lubricatedvalve plug

A tapered valve plug that is alubricated valve plug whichneeds lubrication or sealant toreduce friction, provide portsealing, and to permit sealantjacking action to unseat the plugin tapered position.

tapered valveplug

lubricatedvalve plug

tapered valve plug A plug valve closure memberthat has the shape of a taperedplug.

plug valveclosuremember

tapered wedge valveplug

A tapered valve plug that usesan operator mechanism bywhich the closure member islifted from the seat prior torotation for opening or closing.

tapered valveplug

three piece ball valve A split body ball valve that has abody which can be split intothree parts, comprising bodyand body end connectorsincluding the pipe flanges.

split body ballvalve

three port valve A multiport valve that has threeports.

multiportvalve

three way ball valve A ball valve that is a three wayvalve with three paths of flowthrough the valve body.

ball valve three wayvalve

three way controlvalve

A control valve that has threedifferent paths through whichthe flow can pass.

control valve

three way plug valve A plug valve that is a three wayvalve with three paths of flowthrough the valve body.

three wayvalve

plug valve

three way valve A multi way valve that is madewith three separate paths offlow.

multi wayvalve

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through conduit gatevalve

A parallel gate valve that is aconduit gate valve with full borethat is having a continuous,uninterrupted and unobstructedport through the valve when fullyopen.

This provides a smoothflow with negligiblepressure drop throughthe valve.

parallel gatevalve

full borevalve

conduit gatevalve

tight shut off valve A valve that has a low leakagecharacteristic.

valve

tilting disc check valveA swing check valve that has atilting disc, pivoted near itshorizontal diameter.

swing checkvalve

top entry ball valve A one piece ball valve that hasthe ball assembled from the topof the bore and held in positionby a seat/retainer ring fastenedto the body.

one piece ballvalve

top entry ball valvebody

A one piece ball valve body thatcan be split along a planeperpendicular to the centerlineof the valve stem.

one piece ballvalve body

trunnion ball valve A ball valve that has a trunnionmounted ball closure member.

ball valve

trunnion mounted ballclosure member

A ball valve closure memberthat is supported by a trunnion.

ball valveclosuremember

trunnion mounted fullbore ball closuremember

A trunnion mounted ball closuremember that has a full boreopening.

trunnionmounted ballclosuremember

trunnion mountedreduced bore ballclosure member

A trunnion mounted ball closuremember that has a reducedbore opening.

trunnionmounted ballclosuremember

two piece ball valve A split body ball valve that canbe split into two parts,comprising body and bodyconnector.

split body ballvalve

two way ball valve A ball valve that is a two wayvalve with two paths of flowthrough the valve body.

ball valve two wayvalve

two way valve A multi way valve that is madewith two separate paths of flow.

multi wayvalve

uni-directional valve A valve that is designed to sealin one flow direction.

valve

v ball valve A ball valve that has a V-shapedport in the ball.

ball valve

vacuum relief valve A relief valve that is used forpressure compensationpurposes by admitting (lettingin) a pressure to prevent thatvacuum is forming when fillingor emptying a system.

relief valve pressurerelief valve

vacuum safety valve A self acting control valve thatautomatically releases excesspressure or admits pressure toprevent a vacuum.

self actingcontrol valve