Flat Glass Gagecocks-En

8/9/2019 Flat Glass Gagecocks-En

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Section 2000Bulletin 2100Issued 12/07Replaces 10/05

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FlatGlassGagesOverview

Flat glass gages provide directobservation of liquid level in a processvessel. The process liquid level andliquid characteristics can be observedthrough the glass as it rises and falls inthe gage chamber.

The six basic components of flat glassgages are as follows:

Chamber Pressure retaining element whichprovides rigidity to the gage assemblyand a means to connect the gage toisolation gagecocks or other vesselconnections.

Penberthy’s standard chambers have aflat gasket seat to allow for easyremoval of gasket residue andfragments. Because the chamber doesnot have a recessed face, the gasketmay be removed quickly with a flatblade.

Penberthy has an optional chamber witha recessed gasket seating surface to

meet customer requirements.Slots are machined into Penberthy’stransparent gage chambers rather thancontinuous vision slots. These crossties between vision slots increase the

mechanical integrity along the length ofthe chamber.

The cross tie provides a higher strengthchamber due to the reduction ofunsupported beam length. Chambers areavailable with PFA (Teflon®), PECTFE(Halar®), and PETFE (Tefzel®) lining.

ArmoredFlat GlassGages

Gasket Seals the gap and prevents leaking

between the glass and the chamber.Glass Contains the process liquid and provithe viewing window to the process lilevel.

Cushion Protects the glass from mechanical stpoints by acting as a buffer between glass and cover.

Cover Protects the glass from mechanicalimpact along the sides of the chambeand provides a compression surface fthe bolts/studs/nuts to hold the gaskeand glass tightly against the chamber

Bolts/Studs/Nuts Properly torqued gage bolting applieuniform compressive load to the gagassembly for pressure retaining purpo

4

Gasket

Glass

Cushion

Bolts

Cover

Standard Gasket Chamber

Recessed Gasket Chamber

Reflex Transparent Copyright Pentair


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Multiple SectionGagesTo meet visible glass lengths greaterthan Size 9 glass (12.625” [321 mm]),Penberthy stacks covers along thelength of the single chamber. Themaximum operating pressure andtemperature ordinarily determine thelargest glass size that can be used.

Vision slots are cut according to thesize of the glass used and thenumber of sections necessary tomeet the desired vision length orminimum center to center (vesselconnections). Support bracketsshould be attached to larger gages tosupport the weight of the gageassembly.

The maximum number of sections(covers) that can be used on a singlegage chamber is ten. If the requiredliquid level vision length extendsbeyond 139.750” [3550 mm], multiplesection gages may be bridled to astandpipe or alternately top-bottomside connected.

Gage ConnectionsEnd, side and back (typically reflexonly) connections can be machinedinto the gage chamber to provide endusers with desired center to center

distance and/or the optimum visionposition for liquid level viewing.Connections include NPT, BSP, ANSIflanged, DIN flanged and socketweld.

Gage Connections

3-section gage on continuous

chamber

Continuous vision single-section gages

on standpipe

Multiple section gages on standpipe

Back Connect Side Connect

End Connect

Copyright Pentair


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FlatGlassGagesOverview

6Reflex andTransparent GagesReflex gages have a single vision slotin which light can enter the gagechamber to determine liquid level. Above the liquid level, glass prismsreflect the surrounding light. Belowthe liquid level the liquid fills theprisms causing the glass to becomerelatively transparent.

Light striking the area of glasscovered by transparent liquid isallowed to pass through to theinterior of the gage along the entirelength of the covered prism. The lightis reflected from the back of thechamber to the observer. Typicallythe chamber appears dark.An

opaque liquid such as milk woulddirectly reflect the light at thesurface of the prisms, where itappears as a solid column of white.

Light striking the area of the glassabove the liquid level experiencesinternal reflection. Internal reflectionwill occur when light attempts tomove from a medium having a givenindex of refraction to one having alower index of refraction.

When the light attempts to movefrom a higher index of refraction(glass – 1.47 index of refraction)to a lower index of refraction(air – 1.00 index of refraction

through the prism angle), it reflects ratherthan passes through to the back of thechamber. Except for a focused line of lightalong the apex of the prism, thesurrounding light reflects back to theobserver appearing silvery.

The interface between the liquid andgas occurs where the silvery anddark/opaque area intersect.

Transparent gages have a vision slot onboth sides of the chamber. Light entersthe gage from the side opposite theobserver so that both the level of aliquid and its characteristics can be seeFor easier liquid observation in dark environments, illuminators are availabfor use with transparent gages.

Transparent gages may be used forinterface applications.

Transparent

Reflex

Copyright Pentair


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Borosilicate glass is the mostcommon type of optic material usedin Penberthy gages. Borosilicateglass offers good resistance to mostchemicals at temperatures at orbelow 600˚F [316˚C].

Penberthy uses temperedborosilicate glass in its gages toimprove thermal shock resistance.The tempering process involvesheating the glass to a glassytransition point and rapidly coolingthe glass to create compressivestress in the outer 1/6 of thickness.

Aluminosilicate glass has a higherviscosity and a lower thermalexpansion coefficient compared toborosilicate glass. Aluminosilicateglass is commonly used whereprocess temperatures are greaterthan 600˚F [316˚C] but are at orbelow 800˚F [427˚C].

Fused quartz is made fromcrystalline silica with few impurities(50 ppm by weight).The highesttemperature rating, 1000ºF [538ºC],is achieved by using quartz.

Materials other than quartz limita gage assembly’s maximumoperating temperature.

Penberthy offers quartz in its modelTH only. The physical properties ofquartz require an extremely flatseating surface. Flatness toleranceof gasket and cushion seatingsurfaces on chambers and coversmust be maintained to avoidtorsional or point stresses on thequartz.

Shields (e.g., PCTFE, Mica) can be

installed to prolong the life oftransparent flat glass in corrosive orerosive environments such ashydrofluoric acid, sodium hydroxideor steam.

Borosilicate Glass, AluminosilicateGlass and Quartz

Armored Gages Armored flat glass gages give usersthe ability to visually inspect liquidcharacteristics (color, particulate,striations, turbulence) and monitorrelative fill or drain rates in a variety ofapplications where vibration,temperature and/or pressure extremesrule out level technologies.End users interested in establishing areliable, easy-to-understand levelreference often use flat glass gages toverify electronic level device output atplant start-up or routine maintenance(especially pressure vessels).

Other distinct advantages:

• They require no electrical power.Level can be monitored in remote

locations where no power isavailable. In event of a power failure,the flat glass gage is not effected.

• They are not dependent on mostliquid properties. Multiple liquids canbe processed through the samevessel without concerns for density,surface turbulence, di-electric,conductivity, etc.

• They’re suitable for vacuumapplication.

• They provide a near-unlimited lengthof measure.

• They’re non-intrusive.

Temperature Ranges for Commonly Used Optical Material

Illuminator Assembly

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for less demandingprocess conditions...Penberthy’s low pressure gages aredesigned to maximize the mechanicaland economical advantages of ductileiron covers.

All materials in low pressure gagesconform to ASTM specifications.RL gages can achieve pressures to2400 psig [16550 kPa] @ 100ºF[38ºC] and TL gages can achievepressures to 2000 psig [13790 kPa]@ 100ºF [38ºC] when manufacturedwith size 1 glass – see ratingstable below.

Penberthy does not recommendlow pressure gages forsteam/water applications.

Threaded 1/2” NPTF3/4” NPTF

Socketweld 1/2” female

3/4” femaleFlanged


Socketweld 1/2” female3/4” female

Flanged

8

End Connections

Side or Back (typically reflex only) Connections

CONNECTION TYPE STANDARD OPTIONAL

X X

X

X X

X X X

X X

Low Pressure Flat Glass Gages

Standard/Optional Features

Model RL – Reflex Low Pressure

Model TL – Transparent Low Pressure

Model RL Pressure/Temperature

Model TL Pressure/Temperature

NOTE: Pressure/Temperature ratings shown for standardgasket, otherwise see chart on page 13.

©LowPressureFlatGlassGages

Copyright Pentair


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for most commonprocess conditions...Strength and versatility make

Penberthy’s medium pressure gagesideal for most common processconditions. Offshore specification2600.1 is preferred with mediumpressure gages in offshore and othercorrosive environments.

All materials in medium pressure gagesconform to ASTM specifications.RM gages can achieve pressures to3000 psig [20680 kPa] @ 100˚F [38˚C]and TM gages can achieve pressures to2500 psig [17240 kPa] @ 100˚F [38˚C]when manufactured with size 1 glass –see ratings table below.

Although not designed for thermalcycling, Penberthy allows use ofmedium pressure gages for steam/ water applications due to historicalprecendence - see Application Report2781 in Penberthy Catalog.



Flanged



Flanged

For environmental Nace MR0175 &/or MR0103 gages, pressurede-rating is required

Medium Pressure Flat Glass Gages

End Connections




ChambersRecessed Gasket

X X

X X

X

X X X

X X

X *Gages with recessed gaskets are designed with the letter R at the end of the Model Number (i.e. RMR)

Model RM – Relfex Medium Pressure

Model TM – Transparent Medium Pressure

Model RM Pressure/Temperature

Model TM Pressure/Temperature

NOTE: Pressure/Temperature ratings shown for standard

gasket, otherwise see chart on page 13.

Copyright Pentair


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HighPressureFlatGlassGages

0

©

Heavy duty construction for highpressure resistance...Penberthy engineers its high pressurecover to allow maximum ratedpressure regardless of glass size.High pressure gages resist torsionalstresses exceptionally well to providea process gage for the mostdemanding applications.

All materials in high pressure gagesconform to ASTM specifications.RH gages can achieve pressures to4000 psig [27580 kPa] @100˚F [38˚C]and TH gages can achieve pressuresto 3000 psig [20680 kPa] @ 100˚F[38˚C] for all glass sizes – see ratingstable below.

Penberthy does not recommend highpressure gages for steam/waterapplications. They are designed for highpressure, but low thermal cycle duty.


Socketweld 1/2” female

3/4” femaleFlanged



Flanged


End Connections




ChambersRecessed Gasket*

X X

X

X X

X X X

X X

X *Gages with recessed gaskets are designed with the letter R at the end of the Model Number (i.e. RHR)

High Pressure Flat Glass Gages

Model RH – Reflex High Pressure

Model TH – Transparent High Pressure

Model RH Pressure/Temperature

Model TH Pressure/Temperature


Copyright Pentair


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Flanged

for turbulent surfaceor extremely transparent liquids...Combining high pressure covers and alarge cylindrical chamber, these gages canimprove accuracy in determining turbulentvessel liquid levels. In addition tosimulating the function of a stilling well andproviding a liquid column approximatelyfour times the diameter of standard gages,large chamber gages can provide endconnections up to 2” NPTF that canaccommodate various instrumentation.

All materials in large chamber gagesconform to ASTM specifications.RLC gages can achieve pressures to2400 psig [16550 kPa] @ 100˚F [38˚C]and TLC gages can achieve pressures to1580 psig [10890 kPa] @ 100˚ F [38˚C]for all glass sizes – see ratings table below.

Penberthy does not recommend largechamber gages for steam/waterapplications.

Threaded 1/2” NPTF3/4”-2” NPTF

Socketweld 1/2”-2” female

Flanged

End Connections




X

X

X X

X X X

X X

Large Chamber Flat Glass Gages

Model RLC – Reflex Large Chamber

Model TLC – Transparent Large Chamber


Model RLC Pressure/Temperature

Model TLC

Pressure/Temperature


Copyright Pentair


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for direct mounting tovessel wall...For application involving high vibration,highly viscous liquids or liquids withconsiderable amounts of solids,Penberthy offers end users a flat orradius weld pad gage. Because thereare no nipples through which theprocess liquid enters the gage,clogging potential is eliminated.

When welding the gage to a vessel, it isextremely important to take properprecautions to prevent warpage of thechamber. Penberthy stronglyrecommends the use of an optionalsteel spacer for welding. After welding, it is important to check the flatness of all glass seating surfacesas described in Penberthy’s Installation,Operation, and Maintenance manual.

All materials in weld pad gages conformto ASTM specifications. RMW and TMWgages can achieve pressures to 2000 psig[13790 kPa] @ 100˚F [38˚C] – whenmanufactured with size 1 glass– see table below.

Flat Pad Radius Pad

2” [51 mm] min. radius through12” [305 mm] max. radius

Isolable Gagecocks

Integral gagecocks can be added toPenberthy’s weld pad gages.Thesegagcocks allow the gage to be isolated formaintenance without lowering the liquidlevel below the gage.

Penberthy does not recommend weldpad gages for steam/water applications.

IsolableGagecocks – Weld Pad Gage

2

Weld Pad Flat Glass Gages

FEATURE STANDARD OPTIONAL


X

X X

Model RMW – Reflex Medium Weld Pad

Model TMW – Transparent Medium Weld P

For environmental Nace MR0175 &/or MR0103 gages, pressure de-rating is required

Model RMW Pressure/Temperature

Model TMW Pressure/Temperature

NOTE: Pressure/Temperature ratings shown for standard gasket, otherwise see chart on page 13.

© Copyright Pentair


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Graphite ribbon (Grafoil®) and non-asbestos (Nobestos D-7301®) gasket ratingsare derived from performance curves.

GasketMaterial 100˚F [38˚C] 250˚F [121˚C] 300˚F [149˚C] 400˚F [204˚C] 500˚F [260˚C]Buna-NEPDMNeoprene

Viton® (FKM)Daikin® (PCTFE)Teflon® (PTFE)

300 [2070]300 [2070]300 [2070]300 [2070]300 [2070]300 [2070]

225 [1550]225 [1550]225 [1550]225 [1550]225 [1550]225 [1550]

– –210 [1450]210 [1450]210 [1450]210 [1450]210 [1450]

– –– –– –

180 [1240]180 [1240]180 [1240]

– –– –– –– –– –

150 [1030]

Maximum Pressure at specified temperature psig [kPa]

Dimensions for Process Gages

Sections Model Glass Size Visible LengthEnd ConnectedOverall Length

inch inchmm mm

11

11111112222

22333344455

566778899

1010

RL/TLRM(R)/TM(R)

RMW/TMW

RL

TLRMRMRTM

TMRRH

RHRTH

THRRLCTLC

RMWTMW

12

34567894567

89678978978

98989898989

3.7504.750

5.7506.7507.8759.125

10.25011.87512.62515.00017.25019.75022.000

25.25026.75030.37533.75038.62540.87545.50052.00055.00057.25065.375

69.12578.75083.25092.12597.375

105.500111.500118.875125.625132.250139.750

95121

146171200232260302321381438502559

641679772857981

103811561321139714541661

17562000211523402473268028323019319133593550

5.2506.250

7.2508.2509.375

10.62511.75013.37514.12516.50018.75021.25023.500

26.75028.25031.87535.25040.12542.37547.00053.50056.50058.75066.875

70.62580.25084.75093.62598.875

107.000113.000120.375127.125133.750141.250

133159

184210238270298340359419476540597

679718810895

1019107611941359143514921699

17942038215323782511271828703058322933973588

Pressure/TemperatureDe-Rating for MaterialOther Than Standard

5 Section GageSize 9 Glass

Copyright Pentair


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for extraordinary pressure and vaporrequirements...

The method of clamping and sealingthe glass differs from other gages inthat the glass does not experiencestress concentrations imposed bybolting. The glass becomes afloating member between two solidlybolted blocks of rigid plate.

The pressure activated seal principleprovides a self adjusting means ofmaintaining a tight joint betweenglass and liquid chamber. Thegasket system compensates formachining variations.Because glass can take atremendous amount of evenly loadedcompression, the gage can withstandextremely demanding pressurerequirements.

All materials in TU gages conform to ASTM specifications. TU gages canachieve pressures to 6000 psig[41370 kPa] @ 250˚F [121˚C].Pressure rating is not glass sizedependent. A higher temperaturerating 400˚F [204˚C] @ 6000 psig[41370 kPa] can be achieved byusing Viton®.Teflon® can achieve500˚F [260˚C] @ 6000 psig[41370 kPa].

Penberthy does not recommendultra-high pressure gages forsteam/water applications.



Flanged



Flanged

11111222223333

TUTUTUTUTUTUTUTUTUTUTUTUTUTU

13457134573457

3.5315.5316.5317.656

10.0318.875

12.87514.87517.12521.87520.21923.21926.59433.719

90140166194255225327378435556514590675856

6.5008.5009.500

10.62513.00011.75015.75017.75020.00024.75023.09426.09429.46936.594

165216241270330298400451508629587663749929

End Connections

Side Connections

Sections Model GlassSizeVisible Length End ConnectedOverall Lengthinch mm inch mm

Ultra-High Pressure Flat Glass Gages4



X X

X X

X X X

X X

X

Model TU - Transparent Ultra High Pressure

Model TU Pressure/Temperature


Dimensions

©

Ultra-HighPressureFlatGlassGages

Copyright Pentair


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for dynamic thermalenvironments...Designed to expand and contractduring dynamic thermal conditions,these steam/water gages have extra-heavy construction incorporating awide chamber. Thermally inducedgage stresses are absorbed by thelinear expansion within the stuffingbox or the expansion loop.

TSL stuffing box or TSL-F flangedconfigurations can be used forsteam/water service at or below 650psig [4480 kPa].TSM stuffing box orTSM-F flanged configurations can beused at or below 1500 psig[10340 kPa] steam/water service.

Mica shields and Belleville washersare standard to improve the long termsealing of the gage. All materialsconform to ASME/ASTM specifications.

The following gagecocks are suggestedfor use with steam/water gages:

Model 730 OS&Y - for Model TSLand TSM gage having flanged gage

connections;Model 780 OS&Y - for Model TSLand TSM gage having stuffing boxconnections.

NOTE: Pressure/ Temperature ratings shown for standard gasket.

Model TSL, TSL-F, TSM, TSM-F Pressure/Temperature

Connections Stuffing box nipple 3/4” dia.Flanged

Expansion Loop Mica Shields

X

X

XXX

X

X

XXX

200

300

100

0

400

500

600

700

800

900

1000

1100

1200

1300

1400

1500

200 2 50 30 0 35 0 4 00 4 50 500 550 600 650 700

Temperature ºF

P r e s s u r e p s

i g

TSM, TSM - F =

TSL, TSL - F =

FEATURE TSL TSL-F TSM TSM-FStd Opt Std Opt Std Opt Std Opt

TSL Configurations

TSM Configurations

TSL1 section

TSL2 section

TSL3 section

TSL-F1 section

TSL-F2 section

TSL-F3 section

TSM1 section

TSM2 section

TSM3 section

TSM-F1 section

TSM-F2 section

TSM-F3 section

Steam/Water Flat Glass Gages


Sections Model GlassSize Visible Length

inch mm

TSLTSL-FTSM

TSM-F

111222333

679679679

9.00010.12512.50017.00019.25024.00025.00028.37535.500

229257318432489610635721902

Stuffing Box Nipple

Dimensions

Copyright Pentair


16/35

After experiencing a problem onone of their offshore rigs, amajor oil company requested thatPenberthy initiate a research program

to develop better corrosion protectionfor offshore gage glass.To assessthe relative strengths andweaknesses of various coatings andmaterials commonly used as“offshore protection,” we subjected anumber of our own gages as well ascompetitive models to an acceleratedcorrosion/weathering test (ASTMB117).While the tests wereperformed in a controlled laboratoryenvironment, the exposure to over2500 hours of heat and salt sprayprovided a corrosive environment thawas judged to be comparable to twoyears of actual offshore use.

Above left is a Penberthy gage(figure 1) which was used offshore fotwo years in the Gulf of Mexico. Itwas prepared according to anindustry-accepted specification whichthe oil company had established forits offshore equipment. Badly

corroded and potentially dangerous,this gage establishes a benchmark for the kind of corrosion anddeterioration that typically occurs

6

Offshore Gage Glasses

1

4

2 3

5 6

1 Two years actualoffshore exposure

2&3 Two years offshore exposure simulated in lab

4 Flourocarbon and MolyDiSulfide coatings too easliypenetrated

5 Three-part coatingapplied to individual partsprior to gage assemblycontrols corrosion-excepton hardware

6 Three-part coating asapplied by Penberthyprovides true “offshoreprotection”

Competitive comparison shows the need for concernin selecting a gage with “offshore” design

As important as coatings are in makinga gage corrosion-resistant, their value

can be rendered useless if the glass isleft vulnerable to other types ofdamage.The total protection of gageglass is critical in complementing theeffectiveness of offshore coatings.

The Penberthy offshore gage design isunique in its ability to completelyisolate the gage glass from abrasiveforces. This complete protection isimportant because even seemingly

minor abrasions can cause thetempered gage glass to lose most

of its pressure containing ability.

The following diagrams illustrate therelative vulnerability of the glass on

competitive models.Exposed Glass Exposed Glass Exposed Glass Exposed Glass

Other U.S.Manufacturer

EuropeanManufacturer

JapaneseManufacturer

Latin AmericanManufacturer

OffshoreG

ageGlassOverview

© Copyright Pentair


17/35

during two years of actual offshoreuse. Corrosion on interior surfaceshas put stress on the glass, making itvulnerable to failure. Also, the heavily

corroded bolts cannot be retorqued inroutine maintenance.

As a result of these tests, Penberthyhas developed a unique three-partcoating, applied to the componentsbefore the gage is assembled, toprovide unprecedented gageprotection in offshore application.The Penberthy gage also includes avariety of unique design features tofurther extend gage life.

Durable coatings complement theeffectiveness of inorganic zinc

Polyurethane Top-Coat(2.5 to 3 mil)Its glossy tile-like finish dramatically upgradesthe weather resistance of the layered coatings.Provides excellent added protection fromchemicals and abrasion as well.

Epoxy Tie-Coat (4 to 8 mil)Epoxy polyamide complements the zinc primerby providing added abrasion resistance andprotection from weathering. Also provides aneffective base for the topcoat.

Inorganic Zinc Primer (2 to 3 mil)

This self-curing coating produces a tight bond toprepare surfaces and protects steel galvanically.Meets performance requirements of

ANSI N 101.2-1972 and N 5.12-1974.

First, and prior to assembly, all metalparts are coated with a layer ofsacrificial inorganic zinc.Then, afterassembly, they are sprayed with anepoxy tie coat and urethane finish.

Nuts, bolts and washers are stainlesssteel to assure that they will never rustand that nuts can be periodicallyretorqued, as required. Washers,in turn, prevent the protectivecoatings on the cover from beingscraped off.

Attached with a durable silicone sealant,this strong clear polymethylmethacrylatepanel fully protects the glass front fromflying sand and debris. Illuminators foroffshore gages are always type 4x and thePMMA wedge is sealed the same as thePMMA gage glass protecting panel.

Gage cover extends the full depthof the glass and protects it laterally fromsandblasting and other abrasives fromnearby installation and maintenanceoperations.

Three Protective Coatings

Stainless Steel Hardware

Tough PMMA Panel

Deep Wall Cover

Copyright Pentair


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for cost effectivelevel indication...Penberthy Tubular Glass Gages areused to register liquid levels in low tomedium pressure applications. Theyare externally mounted to the vesseland use tubular glass to providedirect visual verification of the liquidlevel present.The transparent glassalso provides an excellent means tooptically inspect fluid characteristics.

Liquid enters the gage through thelower tank connection. The meniscuspresent in the glass tube correspondsto the liquid level in the tank. Available accessories allow you tocustomize each gage to your specificapplication requirements. Theseoptions can also provide enhancedlevel indication and protection for thetubular glass.

Protectors Tubular glass is susceptible toaccidental breakage. To counteractthis condition, Penberthy offers avariety of protectors.These

protectors prevent damage to theglass, but do not restrict levelindication capability. In some casesthe protector actually enhances it.Protectors can be adapted to fit mostmajor manufacturers’ gagecocks.

Guard Rods– Two or four metallicrods placed next to the glass tube.

Plastic or Wire Glass– A transparentbox surrounding the tubular glassconstructed from either clear plastic orwire glass.Sheet Metal– Two pieces of sheetmetal formed to protect both sides ofthe tubular glass.The front and back are left open to facilitate easy viewing.

Refractive– An extruded aluminumchannel with your choice of either apolymer or glass cover. The interioris a white anodized finish with 45ºangle red stripes on the back wall.As

Tubular Glass Gages

the gage fills, liquid passes in front ofthe stripes.The refractive nature ofthe liquid changes the stripe angleshowing the highly visible contrastbetween liquid presence andabsence.

If water is the liquid used, the stripes

become horizontal. Liquids with arefractive index less than water willalter the angle less, higher indexeswill alter the angles more. Therefractive protector is designed for usewith standard tubular glass.

Internal Tubes A stainless steel internal heating orcooling tube that passes through thelength of the tubular glass can be usedin conjunction with an offset patterngagecock and high pressure glass.

Glass Union Intended for use in gages over 48” inheight. It allows you to join two piecesof glass within the same gage. Thisincreases the length of the gage, yetmaintains the same pressure/ temperature rating as the individualpieces of glass. Glass unions shouldbe used in conjunction with therefractive protector to providemechanical stability.

Glass Union

Wire Glass Protector

Plastic Protector

Refractive Protector

(Glass Union)

Sheet Metal

Protector

Refractive Protector

WireGuard Rod

TubularGlassGagesOverview

8

Copyright Pentair


19/35

Hydraulic Adapters Hydraulic Adapters are used in placeof gagecocks for connecting the gage toyour vessel.They attach directly tothe ends of the tubular glass,providing a 1/2” NPT maleconnection. This allows you toincorporate most standard hydraulicconnections currently available.

Hydraulic Adapter

Using secured Glass Unions and multiple pieces of tubular glass will increase the pressure/temperature rating over that of anequivalent length of single glass.

310 [2140]280 [1930]265 [1830]250 [1720]

Pressure/Temperature Ratings for Gages with a Single Piece of Tubular Glass (Both 5/8” and 3/4”)

Center to CenterDistance For Vessel

Connections

No Corrosion up to 150ºF [66ºC] Steam Boiler Service Up to 425ºF [218ºC]

Inches [mm] Psig [kPa] Psig [kPa]

HighPressure

HeavyWall

RedLine

HighPressure

HeavyWall

RedLine

10 [ 254]15 [ 381]20 [ 508]25 [ 635]30 [ 762]35 [ 889]40 [1016]45 [1143]50 [1270]55 [1397]60 [1524]65 [1651]

70 [1778]

410 [2830]385 [2650]355 [2450]300 [2070]275 [1900]240 [1650]210 [1450]200 [1380]180 [1240]150 [1030]140 [ 970]125 [ 860]

100 [ 690]

600 [4140]600 [4140]600 [4140]580 [4000]550 [3790]500 [3450]420 [2890]360 [2480]340 [2340]

N/AN/AN/A

N/A

340 [2340]310 [2140]285 [1960]260 [1790]230 [1590]200 [1380]180 [1240]170 [1170]160 [1100]140 [ 970]120 [ 830]100 [ 690]

90 [ 620]

275 [1900]265 [1830]260 [1790]250 [1720]

345 [2380]325 [2240]315 [2170]300 [2070]

NOT RECOMMENDED

Temperature Ratings for Typical Packing Material

Packing TypeMaximum Temperature

Rating ºF [ºC]Grafoil® (Standard)

Teflon ®

Neoprene ®

Viton®

425 [218]

425 [218]

300 [149]

400 [204]

Gagecocks Plastic or WireGlass Protector

Part

Material Specifications for Glass Unions and Hydraulic Adapters

Glass Union

Hydraulic Adapters

Steel Brass 316 STS

X

X

X

X

X

X

OPTIONS

Options Available for the Different Types of Tubular Glass

Hydraulic Adapters

GuardRods

SheetMetal

RefractiveProtector

InternalTube

Glass Type(Both 5/8” and 3/4”)

High Pressure

Heavy Wall

Red Line

Glass Union

X X

X X

X X

X X

X X

X

X X

X

X X

X

X

X

X

X

Copyright Pentair


20/35

Graph-A-BondGaskets

0

©

The Graph-a-Bond TMgasket: superior strength andbetter adhesion

Frustrated with GRAFOIL®

gasket folding,flecking, denting and slipping? Penberthyhas the answer – a graphite compositegasket that provides both superior strengthto resist gasket deformation and bettersurface adhesion than commonly usedgraphite gaskets. (Concept iscovered by US Pat# 5,895,058, otherpatents and proprietary data may pertain).

Penberthy has combined the grip of fibrousgasketing with the superior sealing andphysical attributes of graphite to create aGraph-a-BondTMgasket. It provides:

• Excellent chemical resistance• Efficient conduction of thermal energy• Stability at high temperatures• Extremely low microporosity (leakage)• “Springback” resilience to conform to

curved and flat surfaces• Reduced gasket blow-out

Penberthy has also attached a fibrousgasket (elastomeric binder) to theotherwise exposed graphite material tonegate its natural lubricity and difficulty inhandling. As a result, handling Penberthy’sGraph-a-Bond gasket is much easier thanconventional graphite gaskets, helping toeliminate the possibility of damage duringgage assembly. The fibrous laminate alsogives the graphite a higher degree ofstiffness to resist deformation or bendingbetter than graphite gaskets with polyesteror metal inserts.

The Penberthy gasket is also ideal toretrofit onto aged chambers that haveexperienced rebuilds over the years andmay leak if conventional graphitegaskets are used. Note that the Penberthygasket fits any manufacturer’s standard-size flat glass gage. Gasket material can bemanufactured for use with other fittingsincluding flanges.

Cross-section of gasket, showing fibrous laminate providing stiffness and better handling characteristics

The laminate bonding is crucial to the success of this gasket form. It is a very thin combination ofacrylonitrile and phenolic polymers.The acrylonitrile, a thermoplastic,provides the initial bonding atrelatively low temperatures and during the heated pressure roller

initial laminating phase. Astemperature is increased during application, the acrylonitrilecarbonizes and the phenolic, athermosetting polymer, becomes the bonding agent. At extremetemperatures, the entire seal (binders, adhesives, etc.) turnscarbonaceous with high bonding strength to the sealed members (the so-called “frying-on”). Once

carbonaceous an effective seal can be maintained until such time as excessive mechanical shifting of the elements (due to pipe stresses,thermally induced movement, etc.) occurs.

Copyright Pentair


21/35

N E W !

GAGE CONNECTION

Metal Union (Standard)

Metal Union

Gasketed Union

Gasketed Union

MODEL MATRIX

Gasketed Union Tailpipes

A Solution to Union

Connection Leakage . . . . .Penberthy now offers a metallic (AISI 304 stainless steel) spiralwound graphite gasket that fits in a precision machined groove inthe union face of the gagecock body.

This gasket will compensate for any small misaligned plumbingconnections and will provide a tight and effective seal. Whenexperiencing larger misalignment problems, consider a sphericalunion connection.

This option will virtually eliminate leaks, reduce maintenance cost

and will add to the overall safety of the installation.

For periodic maintenance, simply replace the gasket pre-form.

If a gasket is needed on the gage connection only, use model number X22. For a vessel connection gasket only,use model nunber X21 or X31. For gasketed gage and vessel connections, use model number X23.

Examples:Model 423 = 400 series gagecock with gasketed union gage and vessel connections.

Model 331 = 300 series gagecock with a rigid gage connection and a gasketed union vessel connection.

X = 100, 200, 300, 400, 500, 700, series gagecocks

Rigid

Rigid

VESSEL CONNECTION


Gasketed Union

Metal Union

Gasketed Union


Gasketed Union

X20

X21

X22

X23

X30

X31

Copyright Pentair


22/35

GagecocksOverview

2

©

Offset and straightpattern designs forflat glass and tubular

glass gagesPenberthy offers offset and straightpattern gagecocks that isolate the gagechamber from the liquid contents ofthe vessel. Gagecock seat leakage isClass I per ISA RP39.6, FCI 70-2 (formerly ASME B16. 105) and/or IEC 60534-4.

Offset gagecocks have an advantageof permitting the inside of the gageglass to be cleaned easily with aminimum of disassembly. By

removing the vent and drain plugs(or other connection), a straightpassage through the gage chamberis opened. A brush can be insertedthrough the gagecock vent and drainfor glass cleaning.

To prevent rapid loss of fluid in theevent of accidental glass breakage,Penberthy supplies its gagecocks withautomatic ball check shut-off. Shouldthe glass break, the pressure drop

causes the ball checks to seat toprevent loss of tank contents.

To unseat these ball checks duringthe liquid level readings, the tip of thegagecock stem has an extension thatpushes the ball away from its seatwhile allowing the gage column to fillas liquid contents pass around theball. Stainless steel retainers preventreverse seating of balls or loss ofballs during installation.

Both upper and lower gagecocks in eachset are equipped with horizontal ballchecks. Balls are located on the vesselside of the gagecock seats.

Gagecocks with ball checks omittedmeet ASME boiler requirements.As analternative method to ASME boilerrequirements, the lower gagecock isavailable with an optional vertical risingball check located in the offset portion ofthe gagecock body, and the uppergagecock has a leaky seat.

Gagecock Connections

Gagecock Bodies

DIMENSIONS (Flat Glass)To obtain the maximum length permissible for given vessel center-to-centerdimension using 1/2” nipples:

Maximum Gage Length =(Gagecock Center-to Center Dimension) - (Dimension X)

To determine the overall length of nipples needed to make up a gage set forfixed vessel center-to-center dimension using 1/2” nipples:

Combined Nipple Length =(Gagecock Center-to-Center Dimension) - (Gage Length + Dimension Y)

Overall nipple length can be divided between nipples to suit the application.Minimum length required for each nipple is: 1-1/8” for 1/2” NPT nipple;1-3/8” for 3/4” NPT nipple.

Penberthy Floating Shank union vessel connection permits gagecockcenter-to-center dimension to vary 3/8” [9.5 mm] total from actual vesselcenter-to-center dimension.

Gagecocks:Flat Glass and Tubular Glass

Spherical Union

Flanged Solid Shank

Socket Weld

Union

NPT-M

OFFSET STRAIGHT

(x)30 Series Offset Pattern

(x)20 Series Offset and Straight Pattern

Copyright Pentair


23/35

Series 100, 200, 300, 400 and 600 Gagecocks These gagecocks have inside screwthreads that are wetted by the liquid.

They are offered with a wide range offeatures in both straight and offsetpattern designs (600 Series - offset only).

Series 500 and 700 Gagecocks - OS&Y These are outside screw and yokegagecocks that are used for hightemperature or corrosive-liquidapplications.The OS&Y designisolates the stem threads from theliquid. The stem seats in a reciprocativeinstead of a rotary fashion.

Series N2, K2, K3, N6 and N7 Gagecocks Penberthy tubular glass gagecocksare for use in lower pressureapplications. They are available withmany of the same combinations offeatures described above for a rangeof uses, including union or solidshank vessel connections and achoice of stuffing box sizes forvarious glass diameters. All stuffing

box connections are designed forpositive seal with minimum radialcompression. Both straight andoffset pattern gagecocks are offered.

Vertically RisingBall Check

Standard Gagecock

Vacuum Seat

Backseating Stem(Union Bonnet Gagecocks only)

DIMENSIONS (Tubular Glass)To obtain the length of glass tubing needed to make up gage set for givenvessel center-to-center dimension:

Glass Tubing Length =(Vessel Center-to-Center Dimension) - (Dimension X)

To obtain the length of guard rods for given gagecock center-to-centerdimension:

Guard Rod Length =(Gagecock Center-to-Center Dimension) - (Dimension Y)

Copyright Pentair


24/35

StraightPatternFlatGlassGagecocks

4

©

1500 lb. ANSI rating – Pressures to4000 psi @ +100ºF [27580 kPa@ +38ºC]Temperature Ranges from-300ºF to +750ºF [-184ºC to +399ºC]

Design Features The 100 and 200 series includesmodels 120/220 and 130/230with these standard features:

• Straight pattern• Integral bonnet (100 series)• Union bonnet (200 series)• Union Vessel connection• Gage connection

Model 120/220 - UnionModel 130/230 - Rigid

• Ball Check Shutoff• Integral seat (100 series)

Threaded renewable seat (200 series)

A variety of optional features areavailable when specified.

Optional materials can be specified forthe gagecock body and trim.(Trim consistsof the stem, stem packing retainer, ball

check, and seat (200 series only)).Standardand optional materials conform to ASTMSpecifications.

ASME Boiler Code Series 100 and 200 gagecock sets thatare acceptable for ASME Boiler Code aresupplied with ball check shut-offsomitted.

120/220130/230

4000 [27580] 4000 [27580]

4000 [27580]

4000 [27580]

4000 [27580]

4000 [27580]

3900 [26890]

3900 [26890]

3815 [26300]

3815 [26300]

3730 [25720]

3730 [25720]

3525 [24300]

3525 [24300]

3355 [23130]

3355 [23130]

2620 [18060]

2755 [18990]

FEATUREPattern

Straight Bonnet

Gage Connection

Vessel Connection

Vent/Drain Connection

Ball Check Shut-Off

Seat

Handwheel

Lever

Integral Union

Union

Rigid

Socketweld

Flanged Spherical Union

Union

Solid Shank

Socketweld


1/2” NPTF 3/4” NPTF

Horizontal Lower and Upper GagecocksOmitted * Vacuum - Horizontal Upper and Lower

Integral Threaded (Renewable)Backseating Stem

w/ Standard Pitch Threadsw/ Quick Closing Thread

w/ Quick Closing Thread (1/4 turn)

Std Opt Std Opt Std Opt Std Opt

X X X X

XX

XX

X X

X X

1/2” NPTF1/2” NPTM

3/4” NPTF3/4” NPTM1/2” NPTF3/4” NPTF1/2” Female1/2” Male3/4” Male3/4” Female

1/2” NPTF1/2” NPTM3/4” NPTM

1/2” NPTF1/2” NPTM3/4” NPTM1”NPTM (non floating)1/2”NPTM3/4”NPTM1”NPTM1/2” Male3/4” Male1”Male

1/2”NPTF1/2”NPTM3/4”NPTM

X

X

X

X

XX

X

X

XX

X

X

X

X

XX

X

X

X

X

X

X

X

X

X X

X X

X

X XX X

X

XX X

XXXX

XXX

XX

X

X XX XX XX X X X

X X

X XXX

X X

XX

X

XX

X

X

XX

XX

X

XX

X

X

XX

XX

X

XX

X

X

XX

XX

X

XX

X

X

XX

XX

XX

XX

X

XXX XX

XX

XX

XX

XX

* Acceptable for ASME Service

120 220 130 230

Straight Pattern Flat Glass Gagecocks


5-5/8 [14.9]2-5/8 [7.3]

3-3/8 [9.2]3/8 [1.6]

Model Dimension Xinches [cm]

Dimension Yinches [cm]

Center-to-CenterDimensions (see p. 22)

Construction -300ºF [-184ºC]psi [kPa]

-150ºF [-101ºC]psi [kPa]


100ºF [38ºC]psi [kPa]







Forged Steel

Stainless Steel

Pressure/TemperatureMaximum working pressure, psi [kPa] at temperatures to-

Series 100 Series 200

230130

X

Copyright Pentair


25/35

1500 lb. ANSI rating – Pressures to4000 psi @ +100ºF [27580 kPa@ +38ºC]Temperature Ranges from

-300ºF to +750ºF [-184ºC to +399ºC]Design Features The 300 and 400 series includesmodels 320/420 and 330/430with these standard features:

• Offset pattern• Integral bonnet (300 series)• Union bonnet (400 series)• Union vessel connection• Gage connection

Model 320/420 - UnionModel 330/430 - Rigid

• Ball Check Shutoff• Integral seat (300 series)

Threaded renewable seat (400 series)

A Variety of optional features areavailable when specified.

Optional materials can be specified forthe gagecock body and trim. (Trim consistsof the stem, stem packing retainer, ballcheck, and seat (400 series only)). Standardand optional materials conform to ASTMSpecifications.

ASME Boiler Code Series 300 and 400 gagecock sets that areacceptable for ASME Boiler Code are availableas an option. Model 320/420 gagecock setswith this option can be supplied either withball check shutoffs or with them omitted.Model 330/430 gagecock sets with this optionhave the ball check shutoffs omitted.

320 420 330 430

FEATUREPattern

Offset Bonnet

Gage Connection

Vessel Connection


Ball Check Shut-Off

Seat

Handwheel

Lever

Integral Union

Union

Rigid

Socketweld


Union

Solid Shank

Socketweld



Horizontal Lower and Upper GagecocksVertical Lower/Horizontal Upper Gagecock * Omitted * Vacuum - Horizontal Upper and Upper

Integral Threaded (Renewable)Backseating Stem

w/ Standard Pitch Threadsw/ Quick Closing Thread

w/ Quick Closing Thread (1/4 turn)

Std Opt Std Opt Std Opt Std Opt

X X X X

XX

XX

X X

X X

1/2” NPTF1/2” NPTM3/4” NPTF3/4” NPTM1/2” NPTF3/4” NPTF1/2” Female1/2” Male3/4” Male3/4” Female


1/2” NPTF1/2” NPTM3/4” NPTM1”NPTM (non floating)1/2”NPTM

3/4”NPTM1”NPTM1/2” Male3/4” Male1”Male

1/2”NPTF1/2”NPTM3/4”NPTM

X

X

X

X

XX

X

X

XX

X

X

X

X

XX

X

X

X

X

X

X

X

X

X X

X X

X

X XX X

X

XX X

XXXX

XXX

XX

X

X XX XX XX X X X

X X

X XXX

X X

X

X

X

XX

X

X

XX

XX

XXX

X

X

XX

XX

XXX

X

X

XX

XX

XXX

X

X

XX

XX

XX

XX

X

XXX XX

XX

XX

XX

XX


X

X X

Offset Pattern Flat Glass Gagecocks


320/420330/430

5-5/8 [14.9]2-5/8 [7.3]

3-3/8 [9.2]3/8 [1.6]



Center-to-Center

Dimensions (see p. 22)

4000 [27580] 4000 [27580]

4000 [27580]

4000 [27580]

4000 [27580]

4000 [27580]

3900 [26890]

3900 [26890]

3815 [26300]

3815 [26300]

3730 [25720]

3730 [25720]

3525 [24300]

3525 [24300]

3355 [23130]

3355 [23130]

2620 [18060]

2755 [18990]

Construction -300ºF [-184ºC]psi [kPa]










Forged Steel

Stainless Steel

Pressure/TemperatureMaximum working pressure, psi [kPa] at temperatures to-

Series 300 Series 400

430330

Copyright Pentair


26/35

StraightPattern/OS&YFlatGlassGagecocks

6

©

1500 lb. ANSI rating – Pressures to4000 psi @ +100ºF [27580 kPa@ +38ºC]

Temperature Ranges from-20ºF to +750ºF [-29ºC to +399ºC]

Design Features The 500 series includes models520 and 530 with thesestandard features:

• Straight pattern• Outside screw and yoke• Solid shank vessel connection• Gage connection

Model 520 - UnionModel 530 - Rigid

• Ball Check Shutoff• Threaded renewable seat• Backseating stem

A variety of optional features areavailable when specified.

Optional materials can be specified forthe gagecock body and trim. (Trim consistsof the stem, stem packing retainer, ball

check, and seat.) Standard and optionalmaterials conform to ASTM Specifications.

ASME Boiler Code Series 500 gagecock sets that areacceptable for ASME Boiler Code areavailable as an option. Gagecock setswith this option are supplied with ballcheck shut-offs omitted.

520 530FEATURE

PatternStraight

OS&Y

Gage Connection

Vessel Connection (Solid Shank)


Ball Check Shut-Off

Seat

Handwheel

Union

Rigid

Socketweld


Threaded

Socketweld

Flanged


Horizontal Lower and Upper GagecocksOmitted *

Threaded (Renewable)Backseating Stem

w/ Standard Pitch Threadsw/ Quick Closing Thread (1/4 turn)

Std Opt Std Opt

X

1/2” NPTF1/2” NPTM3/4” NPTF3/4” NPTM1/2” NPTF3/4” NPTF1/2” Female1/2” Male3/4” Male

3/4” Female


1/2”NPTM3/4”NPTM1”NPTM1/2”Male3/4”Male1”Male


4000 [27580]

4000 [27580]

4000 [27580]

4000 [27580]

3900 [26890]

3900 [26890]

3815 [26300]

3815 [26300]

3730 [25720]

3730 [25720]

3525 [24300]

3525 [24300]

3355 [23130]

3355 [23130]

2620 [18060]

2755 [18990]

OS&Y

X

XX

XXXX

XXXX

XX

XXX

XXX

XX

XX

XX

XX

XX

XX

XX

XX

X XX X

X XX XX X

X XX X

Construction

Forged Steel

Stainless Steel


100ºF[38ºC]psi [kPa]







Maximum working pressure, psi [kPa] at temperatures to-

Straight Pattern/OS&Y Flat Glass Gagecocks

520530

6-3/8 [16.8]4-3/8 [11.7]

4-1/8 [11.1]2-1/8 [6.0]



Center-to-Center

Dimensions (see p. 22)



Series 500

530

Copyright Pentair


27/35

1500 lb. ANSI rating - Pressures to4000 psi @ +100ºF [27580 kPa@ +38ºC]Temperature Ranges from-20ºF to +750ºF [-29ºC to +399ºC]

Design Features The 700 series includes models720, 730 and 780 with thesestandard features:

• Offset pattern• Outside screw and yoke• Solid shank vessel connection• Gage connection

Model 720 - Union

Model 730 - RigidModel 780 - Stuffing Box• Ball Check Shutoff• Threaded renewable seat• Backseating Stem

A Variety of optional features areavailable when specified.

Optional materials can be specified forthe gagecock body and trim. (Trim consistsof the stem, stem packing retainer, ballcheck and seat.) Standard and optionalmaterials conform to ASTMSpecifications.

ASME Boiler Code Series 700 gagecock sets that areacceptable for ASME Boiler Code areavailable as an option. Ball check shut-offs can be omitted; or the Model720 and 780 can have a verticalrising lower ball check and horizontal,leaky upper ball check.

720 730 780FEATUREPattern

Offset OS&Y

Gage Connection



Ball Check Shut-Off

Seat

Handwheel

Union

Rigid

Socketweld


Stuffing Box

Threaded

Socketweld

Flanged


Horizontal Lower and Upper GagecocksVertical Lower/Horizontal Upper Gagecocks* Omitted *



Std Opt Std Opt Std Opt

1/2” NPTF1/2” NPTM3/4” NPTF3/4” NPTM1/2” NPTF3/4” NPTF1/2” Female1/2” Male3/4” Female3/4” Male

1/2” NPTF1/2” NPTM3/4” NPTM3/4”Adapter Diameter

1/2”NPTM3/4”NPTM1”NPTM1/2”Male3/4”Male1”Male


OS&Y

X X XX X X

X X XX X X

X X XX

XX X X

X X XX X X

X X XX X X

X X XX X X

X X XX X X

X X X

X X X

X X X

X

X

X

XXX

XXX

XX

XXXXXX

4000 [27580]

4000 [27580]

4000 [27580]

4000 [27580]

3900 [26890]

3900 [26890]

3815 [26300]

3815 [26300]

3730 [25720]

3730 [25720]

3525 [24300]

3525 [24300]

3355 [23130]

3355 [23130]

2620 [18060]

2755 [18990]

Construction

Forged Steel

Stainless Steel










Offset Pattern/OS&Y Flat Glass Gagecocks

720730

6-3/8 [16.8]4-3/8 [11.7]

4-1/8 [11.1]2-1/8 [6.0]






Series 700

730

Copyright Pentair


28/35

OS&YFugitiveEmissionGagecocks

8

©



The “Arrestor” Fugitive Emission Gagecock Environmental pollution is a globalissue. Environmental regulationsimpacting plant operations includegagecocks. The “ARRESTOR” OS&Ygagecock is utilized with gage glass,mag gage or other apparatus whenprocess fluid vapors or gases are

considered to be environmentally harmful.Penberthy’s “ARRESTOR” gagecocks areindividually serialized and tested tomeet EPA emission test requirements.Each (550/750 gagecock) is shippedwith its individual test reportthat certifies less than 5 ppm methaneequivalent leak rates using Kalrez®packing. Kalrez® /Zymaxx™, API 607III Edition Fire Test qualified, is apacking material option.

Models 551/751 are available withtype-accepted packing, rated to leak rates of 500 ppm methane equivalent.

Optional materials of construction canbe specified for the gagecock body andtrim. (Trim consists of the stem, stempacking retainer, ball and seat.)Reference Penberthy MaterialSpecification sheets for optionalmaterials.

550/551 750/751FEATURE

PatternStraight Offset

OS&Y

Gage Connection



Ball Check Shut-Off

Seat

Handwheel

Socketweld

Rigid

Flanged

Socketweld

Threaded

Flanged

1/2” Female 3/4” Female 1/2” NPTF 3/4” NPTF

Horizontal Lower and Upper GagecocksBall Checks Omitted



Std Opt Std Opt

X

1/2” Female3/4” Female1/2” NPTF3/4” NPTF

1/2” Male

3/4” Male1”Male1/2”NPTM3/4”NPTM1”NPTM

OS&Y

Socketweld

Threaded

X

XX

XXXXXXXXXX

XX

XXXXXXXXXX

XX

XX

XXXXXX

XXXX

XXXX

XXXX

4000 [27580]

4000 [27580]

4000 [27580]

4000 [27580]

3900 [26890]

3900 [26890]

3815 [26300]

3815 [26300]

3730 [25720]

3730 [25720]

Construction

Forged Steel

Stainless Steel







OS&Y Fugitive Emission Gagecocks



Series 550/750

750

Copyright Pentair


29/35

Pressures to 6000 psi @ +250ºF[41370 kPa @ +121ºC]Temperature Ranges from

-50ºF to +250ºF [-46ºC to +121ºC]Design Features The 600 series includes model 630with these standard features:

• Offset pattern• Union bonnet• Union vessel connection• Rigid gage connection• Ball Check Shutoff• Threaded renewable seat

• Backseating Stem A Variety of optional features areavailable when specified.

Optional materials can be specifiedfor the gagecock body and trim. (Trimconsists of the stem, stem packingretainer, ball check and seat.)Standard and optional materialsconform to ASTM Specifications.

Pressure/Temperature Range Model 630 gagecocks are rated forpressures up to 6000 psi [41370 kPa]over a temperature range of -50ºF to+250ºF [-46ºC to +121ºC]. Optionalo-ring materials for vessel tailpipecan be used to increase temperaturecapability.

630FEATURE

PatternOffset

Bonnet

Rigid Gage Connection

Vessel Connection


Ball Check Shut-Off

Seat

Lever

Threaded

Socketweld

Flanged

Union

Solid Shank

Socketweld

Flanged

3/8” NPTF 1/2” NPTF 3/4” NPTF

Horizontal Lower and Upper GagecocksOmitted *



Std Opt

X

1/2” NPTF3/4” NPTF1/2” Female3/4” Female

1/2”NPTM3/4”NPTM

1”NPTM1/2”NPTM3/4”NPTM1”NPTM1/2”Male3/4”Male1”Male


Union X

XXXXX

XX

XX

XX

XXX

XXX

XX

XX

XXX

Offset Pattern Flat Glass Gagecocks

630


3-1/8 [8.6] 7/8 [2.9]




Series 600

Copyright Pentair


30/35

OffsetPatternTubularGlassG

agecocks

0

©

300 lb. ANSI rating - Pressures to750 psi @ +100ºF [5170 kPa@ +38ºC]


Design Features The N2 and K2 series include modelsN2A/K2A, N2B/K2B and N2C/K2C withthese standard features:

• Offset Pattern• Integral bonnet (N2 series)

Union bonnet (K2 series)• Union vessel connection• Stuffing Box gage connection• Ball check shutoff• Integral seat (N2 series)

Threaded renewable seat (K2 series) A variety of optional features areavailable when specified.Optional materials can be specified forthe gagecock body and trim. (Trim con-sists of the stem, stem packing retainer,ball check, and seat (K2 series only)).Standard and optional materials conformto ASTM Specifications.

ASME Boiler Code Series N2 and K2 gagecock sets that areacceptable for ASME Boiler Code areavailable as an option.For steam/water service in excess of 350psi [2400 kPa], transparent flat glassgages with tubular adapters and shieldsare recommended.

675 [4650]

750 [5170]

675 [4650]

750 [5170]

675 [4650]

750 [5170]

610 [4210]

675 [4650]

590 [4070]

655 [4520]

555 [3830]

610 [4210]

400 [2760]

450 [3100]

MODEL

N2A K2A N2B K2B N2C K2CStd Opt Std Opt Std Opt Std Opt Std Opt Std Opt

X X X X X X

X X X X X X

X X X X X X

X X X X

X X X X X X X X X X X X X X X X X X X X X X

X X X X

X X X X X X X X

X X

X X X X X X

X X X X X X

X X X X X X X X X X X X X X X X X X X X X X X X

X X X X X X X X X

X X X X X X X X X X X X

X X X X X X

X X X X X X

FEATUREPattern

Offset Bonnet

Integral UnionGage Connection

Stuffing Box 5/8” Glass Diameter

3/4” Glass Diameter Vessel Connection

Union 1/2” NPTM3/4” NPTM1” NPTM (non-floating)

Solid Shank 1/2” NPTM3/4” NPTM1”NPTM

Socketweld 1/2” Male3/4” Male1” Male

Flanged Spherical Union 1/2” NPTM

3/4” NPTM Vent Connection

3/4” NPTF Drain Connection

1/2” NPTF Ball Check Shut-Off

Horizontal Lower and Upper GagecocksVertical Lower/Horizontal Upper Gagecocks* Omitted* Vacuum - Horizontal Upper and Lower Seat

Integral Threaded (Renewable)BackseatingHandwheel

w/Standard Pitch Threadsw/Quick Closing ThreadsLever

w/Quick Closing Thread (1/4 turn)Guard Rods (4 per gagecock set)

1/4” [6.4 mm] diameter


Steel & 316 STSN2A/K2A

Steel & 316 STSN2B/K2B, N2C/K2C

Maximum working pressure,psi [kPa] at temperatures to--300

˚

F [-184˚

C] -20˚

F [-29˚

C] 100˚

F [38˚

C] 300˚

F [149˚

C] 400˚

F [204˚

C] 500˚

F [260˚

C] 750˚

F [399˚

C]psi [kPa] psi [kPa] psi [kPa] psi [kPa] psi [kPa] psi [kPa] psi [kPa]

Offset Pattern Tubular Glass Gagecocks

All Models 1-7/8 [4.8] 2-3/8 [6.0]



Center-to-Center andGuard Rod Dimensions(see p. 23)


Pressure/Temperature (Subject to limitations of tubular glass)

Series N2 Series K2

Copyright Pentair


31/35

Std Opt Std Opt

X X

X X

X

X

X

X

X

X

X X

X X

X X

X X

X X

X X

X X

X X

X X

X X

X X


Temperature Range from-20ºF to +550ºF [-29ºC to +288ºC]

Design Features The K3 series include models K3A(150 lb.ASA) and K3B (300 lb.ASA) withthese standard features:

• Offset pattern• Union bonnet• Rigid vessel connection• Stuffing box gage connection

• Ball check shutoff• Backseating stem• Drain cock furnished

A variety of optional features are avail-able when specified.

Optional materials can be specified forthe gagecock trim. (Trim consists of thestem, stem packing retainer and ballcheck.) Standard and optional materialsconform to ASTM Specifications.

ASME Boiler Code Series K3 gagecock sets that are accept-able for ASME Boiler Code are availableas an option.These gagecock valve setshave a vertical rising ball check shut-offin the lower gagecock and a horizontalleaky ball seat in the upper gagecock.

K3A K3BFEATUREPattern

Offset Bonnet

UnionGage Connection

Stuffing Box 5/8” Glass Dia.3/4” Glass Dia.


Threaded 1/2” NPTM3/4” NPTM

Socketweld 1/2” Male3/4” Male

Flanged Drain Connection


Horizontal Lower and Upper GagecocksVertical Lower/Horizontal Upper Gagecock* Omitted* Seat

Integral Backseating StemHandwheel

w/Quick Closing Threads (1/4 turn)Lever

Lever Drain Cock

Furnished

Guard Rods (4 per gagecock set)1/4” [6.4 mm] diameter


225 [1550]

500 [3450]

225 [1550]

500 [3450]

215 [1480]

475 [3270]

190 [1310]

425 [2930]

170 [1170]

375 [2580]

150 [1030]

325 [2240] 300 [2070]

175 [1210]

360 [2480]

MODEL

K3A

K3B

Maximum working pressure, psi [kPa] at temperatures to--20

˚

F [-29˚

C] 100˚

F [38˚

C] 200˚

F [93˚

C] 300˚

F [149˚

C] 400˚

F [204˚

C] 500˚

F [260˚

C] 550˚

F[288ºC]psi [kPa] psi [kPa] psi [kPa] psi [kPa] psi [kPa] psi [kPa] psi [kPa] psi [kPa]

Max. Steam Pressure

Offset Pattern Tubular Glass Gagecocks

All Models 2 [5.1] 2-1/8 [5.4]






Series K3

Copyright Pentair


32/35

2

©

125 lb. ANSI rating – Pressures to200 psi @ +100ºF [1380 kPa @+38ºC]Temperature Range from-20ºF to +400ºF [-29ºC to +204ºC]

Design Features The N6 series consists of model N6Awith these standard features:

• Straight pattern• Integral bonnet• Rigid vessel connection• Stuffing box gage connection• Ball check shutoff

• Drain cock furnished A variety of optional features areavailable when specified.

Optional materials can be specified forthe gagecock trim. (Trim consists of thestem, stem packing retainer and ballcheck.) Standard and optional materialsconform to ASTM Specifications.

Steam Service Series N6 gagecock sets for steamservice are available as an option.

N6A Std Opt

X

X

X

X

X

X

X

X

X

X

X

X

X

X

FEATUREPattern

Straight Bonnet

Intergral Gage Connection

Stuffing Box 5/8” Glass Dia.


Threaded 1/2” NPTM

Socketweld 1/2” Male



Verticle Lower/Horizontal Upper Gagecock Vertical Lower/Horizontal Upper (Steam service Seat)* Omitted* Seat

Integral Handwheel

w/Standard Pitch thread Drain Cock

Furnished Guard Rods (2 per gagecock set)

3/16” [4.8mm] diameter


200 [1380]200 [1380] 190 [1310] 165 [1100] 125 [860] 125 [860]

MODEL

N6A


Max. Steam Pressurepsi [kPa]

WITH STANDARD NEOPRENE GLASS PACKING WITH OPTIONAL TEFLON GLASS PACKING400

˚

F [204˚

C]psi [kPa]

-20˚

F [-29˚

C]psi [kPa]

200˚

F [93˚

C]psi [kPa]

300˚

F [149˚

C]psi [kPa]

100˚

F [38˚

C]psi [kPa]

Straight Pattern Tubular Glass Gagecocks

N6A 1-5/8 [4.1] + 1/2 [1.3]






Series N6

StraightPatternTubularGlassG

agecocks

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33/35

Pressures to 500 psi @ +100ºF[3450 kPa @ +38ºC]Temperature Range from-20ºF to +500ºF [-29ºC to +260ºC]

Design Features The N7 series include models N7A andN7B with these design features:

• Straight pattern• Integral bonnet• Rigid vessel connection• Stuffing box gage connection• Ball check shutoff• Integral drain cock A variety of optional features are availablewhen specified.Combinations of optional features andmaterials are available. Each combinationis designated by the model number in theFeatures table. Optional materials can bespecified for the gagecock body and trim.(Trim consists of the stem, stem packingretainer and ball check.) Standard andoptional materials are available for serviceas described by ASTM Specifications.ASME Boiler Code Series N7 gagecock sets that are accept-able for ASME Boiler Code are available asan option.These gagecock sets have avertical rising ball check shut-off in thelower gagecock and a horizontal ball inthe upper gagecock.

MODEL

BronzeN7A 200 [1380] 200 [1380] 190 [1310] 165 [1140] 125 [860] 125 [860]N7B 400 [2760] 400 [2760] 385 [2650] 335 [2310] 250 [1720] 250 [1720]

Ducille IronN7A, N7B 500 [3450] 500 [3450] 460 [3170] 375 [2580] 290 [2000] 250 [1720] 350 [2410]STL, STSN7A, N7B 500 [3450] 500 [3450] 500 [3450] 500 [3450] 500 [3450] 500 [3450] 500 [3450] 350 [2410]


Max. Steam Pressurepsi [kPa]

WITH STANDARD NEOPRENE GLASS PACKING WITH OPTIONAL TEFLON GLASS PACKING450

˚

F [232˚

C]psi [kPa]

-20˚

F [-29˚

C]psi [kPa]

200˚

F [93˚

C]psi [kPa]

300˚

F [149˚

C]psi [kPa]

400˚

F [204˚

C]psi [kPa]

500˚

F [204˚

C]psi [kPa]

100˚

F [38˚

C]psi [kPa]

Std Opt Std Opt

X X

X X

X X

X

X

X

X

X X

X X

X X

X X

X X

X X

X X

X X

X X

X X

X X

X X

X X

X X

FEATUREPattern

Straight Bonnet

Intergral Gage Connection

Stuffing Box 5/8” Glass Dia.3/4” Glass Dia.

Vessel Connection ((Solid Shank)

Threaded 1/2” NPTM3/4” NPTM

Socketweld 1/2” Male3/4” Male



Horizontal Lower and Upper Gagecocks (Iron,STL, STS )Vertical Lower/Horizontal Upper (Bronze)Vertical Lower/Horizontal Upper * Omitted* Ball Inspection Plug**

Furnished

Omitted Seat

Integral Handwheel

w/Standard Pitch Thread (Iron, STL, STS)w/Quick Closing Threads (Bronze)Drain Cock

Integral Polished Body

BronzeGuard Rods (4 per gagecock set)

3/16” [4.8 mm] diameter

* Acceptable for ASME Service **Required for ASME Service

N7A N7B

Straight Pattern Tubular Glass Gagecocks

All Models 2 [5.1] 3/4 [1.9]






Series N7

Copyright Pentair


34/35

An internal heating or cooling tubeisoffered for tubular and flat glass gages.Thetube passes through the inside of the gageand is in direct contact with the liquid.

Double-and single-sided external heating

and cooling chambers are offered for L andM series gages. External chambers do notcontact the liquid inside the gage.

Lightweight, flexible, silicon-impregnated,fiberglass insulation is available for a widevariety of gagecocks, gages and otherinstrumentation. Reduces heat or cold lossat temperatures from -65ºF to +1000ºF{-55ºC to +540ºC}. Penberthy insulatingcovers can also be used with frost proofextensions and illuminators.

Represented By:

Certification Number 30053

Frost-proof extensionsare clear plasticwindows that fit over the visible part of theglass in flat glass gages. In low temperatureapplications, they prevent build-up of frostover the visible part of the gage resistingobstruction of the view of liquid level.

Drain valves, drain cocks and try cocksare used in the drain or vent connection offlat glass liquid level gages.

An extended packing nutis recommendedfor accommodating gagecocks with protec

and gage scales for tubular gagecocks.Gage scales are constructed of corrosion-resistant materials.

PENGAGETM Selection software allows forfast, accurate and simple gage/gagecockspecification.

Many other accessories are available.See your representatives for details.

Frost-Free Sizing

Lowest Temperature Size

-30º F [-35º C] 2”-94º F [-70º C] 4”

-148º F [-100º C] 6”-211º F [-135º C] 8”-274º F [-170º C] 10”-328º F [-200º C] 12”

Tubular gages and end connect & side connect flat glass gages with offset pattern gagecocks, internal tube and packing adapters

Reflex gage with external chamber mounted to back and jacketed gagecocks

Transparent gage with single external chamber

Insulation Blanket

Other Accessories . . .

4

©

Single maleMale/maleMale/femaleFemale/female

Style NPT

1/8” 1/4” 3/8”

XXXX

XXXX

X

Frost-proof extensions Drain cocks

Try cock Extending Packing Nut

Drain valve Gage scale

Copyright Pentair


35/35

FM approvedDivision 1 and 2

Class I, B,C,DClass II, E,F,GClass III, Type 4, T4

CSA certied Ex dDivision 1 and 2

Class I, B,C,DClass II, E,F,GClass III, Type 4, T4

CENELECEExd IIB + H2 T4, IP66

N ( li bl if l ) MAG GAGE

N E W !

Flat Glass Illuminators forExplosion-Proof applications -indoor or outdoor!

F l a t G l a s s I l l u m i n a t o r s

33

The absence of a watertight seal onconventional gage illuminators has beenan ongoing problems for users seekingillumination in XP or cryogenic applicationsin anoutdoor environment. Now,Penberthy has introduced the rst standardlamp illuminator with a watertight seal,enabling users to get at glass gageillumination outdoors with a product that’simpervious to the elements and canoperate maintenance free and reliably foryears.

These new at glass gageilluminators are available in single sectionunits, double section units and incombinations for three or more sectiongages.

Approvals The standard illuminator rating is 60 wattsat 115Vac. Other illuminators are listed inthe Optional Models Structure table below.

UNITS ARE EXPLOSION-PROOF!

Optional Model StructureEXAMPLE: Standard illuminator for doulble section size 7 at glass gage (2TM7) with 60 watt lamp and 115 volt service

I D S N 7 N 1 6

2, 4, 6, 8, A(10), C(12), N (Not applicable -standard indicator) = WEDGE DEPTH (inch)

S = standard extensionF = frost extension

S = single section at glassD = double section at glassL = LED single sect at glass

M = magnetic gage (inch incr)N = LED magnetic gage

I = Illuminator

1 = 115 Vac standard thread 1” NPTFA = 115 Vac ISO thread2 = 230 Vac standard thread 1” NPTFB = 230 Vac ISO thread4 = 24 Vdc standard thread 1” NPTFD = 24 Vdc ISO thread

2 = 25w - pigtail leads3 = 25w - terminal block 6 = 60w - pigtail leads7 = 60w - terminal block

Documents

Flat Glass Gagecocks-En