Manual 99 LD

Type 99

D10

0260

X01

2

Instruction ManualForm 589

07/01

Regulators www.FISHERregulators.com

Type 99 Pressure Reducing Regulators

Introduction

Scope of Manual

This manual describes and provides instructions andparts lists for Type 99 pressure reducing regulatorscomplete with standard P590 Series integral filter.However, complete instructions and parts listing for theType 1301F pilot supply regulator, and other Fisherequipment, such as monitoring pilots will be found inseparate instruction manuals.

Description

The Type 99 gas regulators provide a broad capacity forcontrolled pressure ranges and capacities in a widevariety of distribution, industrial, and commercialapplications.

A Type 99 regulator has a Type 61L (low pressure), Type61H (high pressure), or a Type 61HP (extra high pres-sure) pilot integrally mounted to the actuator casing asshown in figure 1. The Type 99 regulator can handle upto 1000 psig (69 bar) inlet pressures (the 1000 psig (69bar) regulator requires a Type 1301F pilot supply regulatorand a Type H110 pop relief valve). The pilot supplyregulator reduces inlet pressure to a usable 200 psig (14bar) for the extra high pressure pilot. This regulatorcomes standard with O-ring seals on the guide bushingand valve carrier (key 26, figure 7) to keep main valvebody outlet pressure from interfering with outlet pressurein the lower casing assembly (key 29, figure 9).

Specifications

Since a pilot-operated regulator is con-structed of both a pilot and a main valve,care should be used not to exceed the

W6528

Figure 1. Type 99 Regulator with Type 61H (high pressure) Pilot

maximum inlet pressure shown on thenameplate of either unit. When inletpressure exceeds the pilot limitation, apilot supply reducing regulator and/orrelief valve will be required.

Specifications and ratings for various Type 99 construc-tions are listed in the Specifications section on page 2.Some specifications for a given regulator as it originallycomes from the factory are stamped on nameplateslocated on the pilot and actuator spring cases. A tag(key 159, parts list) additionally may be installed on thepilot to indicate a regulator with O-ring stem seal. Theseregulators and their installations should be checked forcompliance with applicable codes.

Type 99

2

EPYTTOLIPGNIRPSLORTNOCTOLIP

SDNABLANOITROPORPrebmuNtraP edoCroloC

,retemaiDeriW)mc(sehcnI

,htgneLeerF)mc(sehcnI

DL16250725855B1222726086C1

egnarOdetniapnU

)91,0(570.0)02,0(080.0

)5,01(8/1-4)3,8(4/1-3

)rabm2,1ot52,0(.c.wsehcni-5.0ot1.0

L16 220723688B1 deR )82,0(901.0 )0,7(4/3-2 )rabm5ot5,2(.c.wsehcni-2ot1

DL16 220723688B1 deR )82,0(901.0 )0,7(4/3-2 )rabm5,2ot26,0(.c.wsehcni-1ot52.0

EL16 220723688B1 deR )82,0(901.0 )0,7(4/3-2 )rabm02ot21(.c.wsehcni-8ot5

EL16,DL16,L16

220725688B1241729758J1220724688B1

1J 220728758

neerGnworB

eulBwolleY

)35,0(702.0)74,0(781.0)44,0(271.0)63,0(241.0

)9,7(8/1-3)3,7(8/7-2)3,7(8/7-2)0,7(4/3-2

)rabm12ot9,6(isp3.0ot1.0

H16 2A0004660Y0 epirtsneerG )29,0(363.0 )2,51(6 )rabm12ot9,6(isp3.0ot1.0

PH16 220722783D1 eulB )15,0(002.0 )3,4(61/11-1 )rabm831ot96(isp2ot1

Table 2. Proportional Bands

TOLIPEPYT

TOLIPMUMIXAM,ERUSSERPYLPPUS

GISP ( rab )

)LORTNOC(TELTUOSEGNARERUSSERP

GNIRPSLORTNOCTOLIP

rebmuNtraP edoCroloC,retemaiDeriW

)mc(sehcnI,htgneLeerF

)mc(sehcnI

L16 004 )6,72(.c.wsehcni-4ot2.c.wsehcni-21ot3

gisp2ot52.0gisp5ot1gisp01ot2gisp51ot5gisp02ot01

)rabm01ot5()rabm03ot7(

)rabm831ot71()rab43,0ot960,0(

)rab96,0ot41,0()rab0,1ot43,0()rab4,1ot96,0(

250725855B1222726086C1220723688B1220728758J127024688B1241729758J1220725688B1

egnarOdetniapnU

deRwolleYeulBnworBneerG

570.0080.0901.0241.0271.0781.0363.0

)91,0()02,0()82,0()63,0()44,0()74,0()29,0(

8/1-44/1-34/3-24/3-28/7-28/7-28/1-3

)5,01()3,8()0,7()0,7()3,7()3,7()9,7(

DL16 )1( 061 )11(

EL16 )2( 004 )6,72(

H16 004 )6,72( gisp56ot01 )rab5,4ot96,0( 2A0004660Y0 epirtsneerG 363.0 )29,0( 6 )2,51(

PH16 006 )14( gisp001ot53 )rab9,6ot4,2( 220722783D1 eulB 002.0 )15,0( 61/11-1 )3,4(

.toliPL16epyTdradnatsehtseodnahtdnablanoitroporpreworransahnoitcurtsnocDL16epyT.1.toliPL16epyTdradnatsehtseodnahtdnablanoitroporpredaorbsahnoitcurtsnocEL16epyT.2

Table 1. Outlet Pressure Ranges

Body Size and End Connection Styles2-inch body with NPT; ANSI Class 125, 150, 250, or300 flanged; or SWE

Maximum Allowable Inlet Pressure(1)

160 psig (11 bar): When using Types 61LD pilot400 psig (28 bar): When using Types 61L / 61H pilots600 psig (41 bar): Type 61HP pilot (5/8-inchorifice maximum)1000 psig (69 bar): Type 61HP pilot, along withType 1301F pilot supply regulator and Type H110relief valve (1/2-inch orifice only)

Outlet (Control) Pressure RangesSee Table 1

Approximate Proportional BandsSee Table 2

Maximum Allowable Pressure Drop(1)

See Table 3

1. The pressure/temperature limits in this instruction manual and any applicable standard or code limitation should not be exceeded.2. For stability or overpressure protection, a pilot supply regulator may be installed in the pilot supply tubing between the main valve and pilot.3. Type 61LD construction has narrower proportional band than does the standard Type 61L pilot.4. Type 61LE construction has broader proportional band than does the standard Type 61L pilot.

Specifications

Maximum Actuator Pressures(1)

Operating: 100 psig (6,9 bar)Emergency: 110 psig (7,6 bar)

Maximum Pilot Spring Case Pressure for PressureLoading(1,2)

Types 61L, 61LD(3) and 61LE(4): 50 psi (3,5 bar)with special steel closing capTypes 61H and 61HP: 100 psi (7 bar)

Minimum Differential Pressure Required for FullStroke

See Table 3

Maximum Rated Travel1/4-inch (6,4 mm)

Temperature Capabilities(1)

With Nitrile / Neoprene: –20° to 180°F (–29° to 82°C)With Fluoroelastomer: 0° to 300°F (–18° to 149°C)

Type 99

3

Principle of Operation

The key to the operation of a Type 99 regulator is theyoked double-diaphragm pilot (letter keys in this sectionrefer to both figure 2 and 3 unless otherwise noted).Fast response and accuracy are made possible by theamplifying effect of the pressure-balanced pilot and bythe two-path control system. The function of the pilot isto sense change in the controlled pressure and amplifyit into a larger change in the loading pressure . Anychanges in outlet pressure act quickly on both theactuator diaphragm and the loading pilot, thus providingthe precise pressure control that is characteristic of atwo-path system.

A typical pilot has an approximate gain of 20, whichmeans the outlet pressure needs to droop only 1/20 asmuch as a self-operated regulator in order to obtain thesame pressure differences across the main diaphragm.Advantages of a pilot operated regulator are highaccuracy and high capacity.

Upstream or inlet pressure is utilized as the operatingmedium, which is reduced through pilot operation to loadthe main diaphragm chamber. Tubing connects the inletpressure to the pilot through a filter assembly. Down-

stream or outlet pressure registers underneath the maindiaphragm (E) through the downstream control line.

In operation, assume the outlet pressure is less than thesetting of pilot control spring (A). The top side of pilotdiaphragm assembly (F) will have a lower pressure thanthe setting of spring (A). Spring (A) forces the diaphragmhead assembly upward, opening the relay or inlet orifice(C). Additional loading pressure is supplied to the pilotbody and to the top side of main diaphragm (E).

This creates a higher pressure on the top side of themain diaphragm (E) than on the bottom side, forcing thediaphragm downward. This motion is transmittedthrough a lever, which pulls the valve disk open,allowing more gas to flow through the valve.

When the gas demand in the downstream system hasbeen satisfied, the outlet pressure increases. Theincreased pressure is transmitted through the down-stream control line and acts on top of the pilot dia-phragm head assembly (F). This pressure exceeds thepilot spring setting and forces the head assembly down,closing orifice (C). The loading pressure acting on themain diaphragm (E) bleeds to the downstream systemthrough a small slot between the pilot bleed valve (D)and the bleed orifice (H).

Figure 2. Schematic of Type 99 Regulator with Type 61L (low pressure) Pilot

A6814

INLET PRESSURE

LOADING PRESSURE

OUTLET PRESSURE

HD

C

B

E

K

F

OUTLET PIPE

INLET

GA

Type 99

4

Figure 3. Schematic of Type 99 Regulator with Type 61HP (extra high pressure) Pilot

54A2767-aA2505

INLET PRESSURE

LOADING PRESSURE

OUTLET PRESSURE

DOWNSTREAMCONTROL LINE

B

E

K

FLANGEADAPTOR

GA

INLET PRESSURETUBING CONNECTION

F

C

H

D

J

YOKECAP

YOKELEG

YOKECAP

RELIEFVALVECAP

RELAYVALVE

Normally, excess loading pressure slowly escapesdownstream around bleed valve (D) (figure 3) or throughthe relief valve body (J) (figure 4). Since loading pres-sure needs to exceed outlet pressure only moderatelyto stroke the main valve fully open, a continued in-crease in loading pressure differential extends the maindiaphragm (E) and the pusher post assembly (K) farenough to separate the bleed valve (D) and the bleedorifice (H). This permits quick dumping of excessloading pressure into the downstream system.

With a decrease in loading pressure on top of the maindiaphragm (E), the main spring (B) exerts an upwardforce on the diaphragm rod connected to the maindiaphragm (E), pulling it upward. This moves the mainvalve toward its seat, decreasing flow to the down-stream system.

Diaphragm (G) in the pilot valve acts as a sealingmember for the loading chamber and as a balancingmember to diaphragm (F). These two diaphragms areconnected by a yoke so any pressure change in thepilot chamber has little effect on the position of the pilotvalve. Therefore, the active diaphragm in the pilot is (F)and the pressure on the top side of this diaphragmopposes the force of the pilot control spring (A).

Monitoring Systems

Monitoring regulators serve as overpressure protectiondevices to limit system pressure in the event of openfailure of a working regulator feeding the system. Twomethods of using Type 99 regulators in monitoringsystems are as follows:

Working Monitor

On a working monitor installation (figure 4), the controlline of the monitoring pilot is connected downstream ofthe working regulator. During normal operation, distribu-tion pressure causes the monitoring pilot to stand wideopen. Full pilot supply pressure enters the workingmonitor pilot and permits the working monitor regulatorto control at its intermediate pressure setting.

Open failure of the working regulator increases distribu-tion pressure as the working regulator goes wide open.Intermediate pressure is then ignored by the monitoringregulator, which controls downstream pressure at itsown pressure setting (slightly higher than the normalcontrol pressure).

Type 99

5

Figure 4. Working Monitor Installation

20A1389-AB2484

DISTRIBUTION PRESSURECONTROL LINE

INTERMEDIATE PRESSURECONTROL LINE

DISTRIBUTIONPRESSURE

WORKINGREGULATOR

OPTIONALPILOT SUPPLYREGULATOR

PILOT SUPPLY PIPING FOR WORKING REGULATORWHEN PILOT IS REQUIRED TO BE SUPPLIED FROMUPSTREAM PRESSURE

WORKINGMONITORREGULATOR

INTERMEDIATEPRESSURE

OPTIONALPILOT SUPPLYREGULATOR

UPSTREAMPRESSURE

PILOT SUPPLY LINE

TYPE 161AYW MONITORINGPILOT (ALSO REPRESENTA-TIVE OF TYPE 627-109)

WORKINGMONITOR PILOT

LOADINGPRESSURE

The monitoring pilot should be upstream of the workingmonitor regulator. This enables a closer set pointbetween the working regulator and the monitoring pilot.Special Type 161AYW and 627-109 monitoring pilotswith quick-bleed operation have been designed to givefaster response to abnormal downstream conditions.Table 4 gives the spread between normal distributionpressure and the minimum pressure at which theworking monitor regulator can be set to take over if theworking regulator fails open.

Wide-Open Monitor

The control line of the upstream regulator is connecteddownstream of the second regulator (figure 5), so thatduring normal operation the monitoring regulator isstanding wide open with the reduction to distributionpressure being taken across the working regulator. Onlyin case of open failure of the working regulator does thewide-open monitoring regulator take control at its slightlyhigher setting.

The upstream regulator must have an O-ring seal on thevalve carrier assembly. This seals off the leak path thatotherwise would let line pressure ahead of the workingregulator inlet try to close the wide-open monitoringregulator. Figure 5. Typical Wide-Open Monitor Installations

10A1386-AA2503

10A1388-AA2504

FLEXIBLE ARRANGEMENT THAT PERMITS WIDE-OPENMONITOR TO BE EITHER UPSTREAM OR DOWNSTREAM

UPSTREAMREGULATOR(REQUIRES O-RINGSTEM SEAL)

OPTIONAL PILOTSUPPLY REGULATOR

FLEXIBLE ARRANGEMENT THAT PERMITS WIDE-OPENMONITOR TO BE EITHER UPSTREAM OR DOWNSTREAM

UPSTREAMREGULATOR(REQUIRES O-RINGSTEM SEAL)

OPTIONAL PILOTSUPPLY REGULATOR

WORKINGREGULATOR

Type 99

6

Installation

• Personal injury, equipment damage, orleakage due to escaping gas or burstingof pressure-containing parts might resultif this regulator is overpressured or isinstalled where service conditions couldexceed the limits for which the regulatorwas designed, or where conditionsexceed any ratings of the adjacent pipingor piping connections. To avoid suchinjury or damage, provide pressure-relieving or pressure-limiting devices (asrequired by the appropriate code, regula-tion, or standard) to prevent serviceconditions from exceeding those limits.

• A regulator may vent some gas to theatmosphere in hazardous or flammablegas service, vented gas might accumulateand cause personal injury, death orproperty damage due to fire or explosion.Vent a regulator in hazardous gas serviceto a remote, safe location away from airintakes or any hazardous location. Thevent line or stack opening must be pro-tected against condensation or clogging.

Like most regulators, the Type 99 regulator has a outletpressure rating lower than its inlet pressure rating.

Complete downstream overpressure protection isneeded if the actual inlet pressure can exceed theregulator outlet pressure rating or the pressure ratingsof any downstream equipment. Although the Type H110relief valve provides sufficient relief capacity to protectthe extra high pressure pilot of the 1000 psig (69 bar)maximum inlet regulator in case the Type 1301F supplyregulator fails open, this protection is insufficient if themain valve body fails open. Regulator operation withinratings does not preclude the possibility of damagefrom external sources or from debris in the lines. Aregulator should be inspected for damage periodicallyand after any overpressure condition.

The 1000 psig (69 bar) maximum inletregulator must not be used on hazardousgas service unless the Type H110 reliefvalve can be vented into a safe area. Ifvented gas can accumulate and become ahazard in enclosed conditions such as ina pit, underground, or indoors, the reliefvalve must be repiped to carry the gas toa safe location.

A repiped vent line or stack must belocated to avoid venting gas near build-ings, air intakes, or any hazardous loca-tion. The line or stack opening must beprotected against condensation, freezing,and clogging.

MUMIXAMELBAWOLLA

ERUSSERP,PORD

(GISP rab )

GNIRPSEVLAVNIAM MUMINIMLAITNEREFFIDROFERUSSERP,EKORTSLLUF

(GISP rab )

LAIRETAMTAES

MUMIXAMTROP

RETEMAID )1( ,

)mm(sehcnItraP

rebmuN,retemaiDeriW

)mc(sehcnI,htgneLeerF

)mc(sehcnI

)7,1(52 220721772C1 )83,0(841.0 )2,51(6 )250,0(57.0 remotsaleoroulF,enerpoeN,elirtiN )6,82(8/1-1

)4,3(05 220729108N1 )04,0(651.0 )1,81(8/1-7 )01,0(5.1 remotsaleoroulF,enerpoeN,elirtiN )6,82(8/1-1

)3,01(051 220723388B1 )74,0(781.0 )0,71(8/5-6 )12,0(3 remotsaleoroulF,enerpoeN,elirtiN )6,82(8/1-1

)1,21(571 220723388B1 )74,0(781.0 )0,71(8/5-6 )12,0(3 elirtiN )2( enerpoeN, )2( remotsaleoroulF, )2( )2,22(8/7

)2,71(052220723388B1 )74,0(781.0 )0,71(8/5-6 )12,0(3 remotsaleoroulF,elirtiN )2,22(8/7

220721910W0 )17,0(182.0 )2,51(6 )96,0(01 elirtiN )3( remotsaleoroulF, )3( )6,82(8/1-1

)7,02(003 220721910W0 )17,0(182.0 )2,51(6 )96,0(01 nolyN )6,82(8/1-1

)6,72(004 220721910W0 )17,0(182.0 )2,51(6 )96,0(01 nolyN )2,22(8/7

)14(006 220721910W0 )17,0(182.0 )2,51(6 )96,0(01 nolyN )9,51(8/5

)96(0001 220721910W0 )17,0(182.0 )2,51(6 )96,0(01 nolyN )7,21(2/1 )4(

.detsilezismumixamotpusretemaidtropllaesunaC.1.ylnoydobdegnalfFF521ssalCISNA.2

.ylnotaesgnir-O.3.rotalugererusserptelnimumixam)rab0,96(gisp0001rofelbaliavaecifiroylnoehtsi)mm7,21(hcni2/1.4

Table 3. Maximum Allowable Drop and Minimum Differential Pressures

Type 99

7

Clean out all pipelines before installation and check tobe sure the regulator has not been damaged or col-lected foreign material during shipping.

Apply pipe compound to the male pipe threads only witha screwed body, or use suitable line gaskets and goodbolting practices with a flanged body. This regulatormay be installed in any position desired as long as theflow through the body is in the direction indicated by thearrow on the body. Install a three-valve bypass aroundthe regulator if continuous operation is necessaryduring maintenance or inspection.

Although the standard orientation of the actuator andpilot to the main valve body is as shown in figure 1, thisorientation may be changed as far as the inlet tubing(key 24, figure 9 or 11) will permit by loosening theunion nut (key 14, figure 9), rotating the actuator lowercasing (key 29, figure 9) as desired, and tightening theunion nut. To keep the pilot spring case from beingplugged or the spring case from collecting moisture,corrosive chemicals, or other foreign material, the ventmust be pointed down, oriented to the lowest possiblepoint on the spring case, or otherwise protected. Ventorientation may be changed by rotating the spring casewith respect to the pilot body, or on the extra highpressure pilot with optional tapped spring case byrotating the vent with respect to the spring case.

To remotely vent a low pressure pilot, install the ventline in place of the pressed-in vent assembly (key 60,figure 9). Install obstruction-free tubing or piping into the1/4-inch vent tapping. Provide protection on a remotevent by installing a screened vent cap into the remoteend of the vent pipe.

To remotely vent a high pressure pilot, or an extra highpressure pilot with optional tapped spring case, removethe screwed-in vent assembly (key 72, figure 9) fromthe high pressure pilot spring case or the pressed-invent assembly from the extra high pressure pilot springcase and install obstruction-free tubing or piping intothe 1/4-inch vent tapping. Provide protection on aremote vent by installing a screened vent cap into theremote end of the vent pipe.

An upstream pilot supply line is not required because ofthe integral pilot supply tubing (key 24, figure 9 or 11).However, as long as the 1/4-inch NPT tapping in themain valve body is plugged, this tubing may be discon-nected from both the main valve and filter assembly(key 75, figure 9) in order to install a pilot supply linefrom a desired remote location into the filter.

If the maximum pilot inlet pressure will be exceeded bymain valve pressure, install a separate reducingregulator (if not already provided) in the pilot supply line.

A Type 99 regulator has two 1/2-inch 14 NPT controlline pressure taps on opposite sides of the lower casing(key 29, figure 9). The regulator normally comes fromthe factory with the tap closest to the regulator outletleft unplugged for the downstream control line as shownin figure 1, and with opposite tap plugged.

Attach the control line from the unplugged tap two tothree feet (0,6 to 0,9 meter) downstream of the regula-tor in a straight run of pipe. If impossible to comply withthis recommendation due to the pipe arrangement, itmay be better to make the control line tap nearer theregulator outlet rather than downstream of a block

NOITAMROFNITOLIPGNIROTINOM ERUSSERPMUMINIMGNIKROWHCIHWTA

ROTALUGERROTINOMTESEBNAC

noitcurtsnoC egnaRgnirpSgnirpStoliP

rebmuNtraP,retemaiDeriW

)mc(hcnI,htgneLeerF

)mc(sehcnI

2,3(hcni-8/1htiwWYA161epyTdnaretemaidtrop)mm

mumixam)rab3,01(gisp051erusserptelnielbawolla

)rabm83ot21(.c.wsehcni-51ot5)rabm86ot72(.c.wsehcni-82ot11

220729356B1250720735B1

)720,0(501.0)03,0(411.0

)5,9(4/3-3)0,11(61/5-4

)rabm7(.c.wsehcni-3noitubirtsidlamronrevo

erusserp)rab71,0ot960,0(gisp5.2ot1)rab13,0ot61,0(gisp5.4ot52.2)rab84,0ot13,0(gisp7ot2/1-4

220721735B1220722735B1250723735B1

)93,0(651.0)74,0(781.0)55,0(812.0

)4,01(8/1-4)0,01(61/51-3

)4,01(8/1-4

revo)rab430,0(isp5.0noitubirtsidlamron

erusserp

2,3(hcni-8/1htiw901-726epyTgisp051dnaretemaidtrop)mm

telnielbawollamumixam)rab3,01(roydobnoritsacroferusserp

mumixam)rab25(gisp057roferusserptelnielbawolla

ydobnorielbaellam

)rab0,1ot43,0(gisp51ot5)rab7,1ot96,0(gisp52ot01

)rab4,2ot4,1(gisp53ot02)rab1,4ot7,1(gisp06ot52

220723298D1220725157D1220729566D1241725557D1

)34,0(861.0)74,0(781.0)55,0(812.0)03,1(005.0

)5,7(61/51-2)1,7(61/31-2)3,6(23/51-2)5,32(4/1-9


erusserp

)rab5,5ot8,2(gisp08ot04)rab3,01ot5,5(gisp051ot08)rab8,31ot0,9(gisp002ot031

241726345E1241723109P1 )1(

241723109P1 )2(

)27,0(382.0)16,0(042.0)16,0(042.0

)9,5(61/51-2)7,6(8/5-2)7,6(8/5-2


erusserp.etalpmgarhpaidegralhtiW.1.etalpmgarhpaidllamshtiW.2

Table 4. Working Monitor Performance

Type 99

8

valve. Do not make the tap near any elbow, swage, ornipple which might cause turbulence.

In many instances, it will be necessary to enlarge thedownstream piping to keep flow velocities within goodengineering practices. Expand the piping as close to theregulator outlet as possible.

Adjustment of the pilot control spring toproduce an outlet pressure higher thanthe upper limit of the outlet pressurerange for that particular spring can causepersonal injury or equipment damagedue to bursting of pressure-containingparts or the dangerous accumulation ofgases if the maximum actuator emer-gency casing pressure in the Specifica-tions section is exceeded. If the desiredoutlet pressure is not within the range ofthe pilot control spring, install a spring ofthe proper range according to the Mainte-nance section.

Each regulator is factory-set for the pressure settingspecified on the order. If no setting was specified, outletpressure was factory-set at the midrange of the pilotcontrol spring. In all cases, check the control springsetting to make sure it is correct for the application.

Startup

Key numbers are referenced in figure 9 for a low or highpressure pilot and in figure 12 for an extra high pressurepilot. With proper installation completed and down-stream equipment properly adjusted, perform thefollowing procedure while using pressure gauges tomonitor pressure.

1. Very slowly open the upstream block valve.

2. Slowly open the hand valve (if used) in the controlline. The unit will control downstream pressure at thepilot control spring setting. See the adjustment para-graph following these numbered steps if changes in thesetting are necessary during the startup procedure.

3. Slowly open the downstream block valve.

4. Slowly close the bypass valve, if any.

5. Check all connections for leaks.

The only adjustment on the regulator is the reducedpressure setting affected by the pilot control spring(key 43, figure 9 or 11). Remove the closing cap

assembly (key 46, figure 9) and turn the adjustingscrew (key 45, figure 9 or 11). Turning the adjustingscrew clockwise into the spring case increases thecontrolled or reduced pressure setting. Turning thescrew counterclockwise decreases the reduced pres-sure setting. Always replace the closing cap, if used,after making the adjustment.

ShutdownIsolate the regulator from the system. Vent the down-stream pressure first; then vent inlet pressure to releaseany remaining pressure in the regulator.

Maintenance

Regulator parts are subject to normal wear and must beinspected and replaced as necessary. The frequency ofinspection and replacement of parts depends on theseverity of service conditions or the requirements oflocal, state, and federal rules and regulations.

Avoid personal injury or damage toproperty from sudden release of pressureor uncontrolled gas or other process fluid.Before starting to disassemble, isolate thepilot or regulator from all pressure andcautiously release trapped pressure fromthe pilot or regulator. Use gauges tomonitor inlet, loading, and outlet pres-sures while releasing these pressures.

On reassembly of the regulator, it is recommended thata pipe thread sealant be applied to pressure connec-tions and fittings as indicated in figures 7 and 9 andlubricant be applied to sliding and bearing surfaces asindicated in figures 7 and 9, and that an anti-seizecompound be applied to adjusting screw threads andother areas indicated figures 9 and 11.

Actuator and Standard P590 Series Filter

This procedure is to be performed if changing the mainspring and spring seat for those of a different range, orif inspecting, cleaning, or replacing any other parts.Unless otherwise indicated, part key numbers for aType 99 regulator with low or high pressure pilot anddisk or O-ring seat are referenced in figure 9, part keynumbers unique to the 1000 psig (69 bar) maximuminlet regulator are referenced in figure 11, and part key

Type 99

9

numbers for a Type 61HP (extra high pressure) pilot isreferenced in figure 12.

1. Access to all internal actuator parts can be gainedwithout removing the main valve body from the line.Disconnect the loading tubing from the upper casing.

If the regulator has an indicator assembly,perform the following step carefully toavoid bending the travel indicator stem(key 103, figure 6).

Note

The O-rings and gaskets (keys 111 and108, figure 6) in the indicator assemblyare static seals and need not be dis-turbed, unless they are leaking.

2. Remove the four cap screws (key 58, figure 9) andlift off the spring case (key 1, figure 9). Remove thetravel indicator stem, if any, by unscrewing the indicatorstem adapter (key 101, figure 6).

3. Remove the main spring seat (key 2, figure 9) andmain spring (key 3, figure 9).

4. Remove the 12 cap screws (key 12, figure 9) andhex nuts (key 13, figure 9), and lift off the upper casing.

5. Remove the diaphragm (key 11, figure 9) anddiaphragm plate (key 10, figure 9) by tipping it so thatthe lever (key 9, figure 9) slips out of the pusher post(key 8, figure 9).

6. Separate the diaphragm and diaphragm plate byunscrewing the diaphragm rod (key 4, figure 9) from thepusher post. Inspect the diaphragm (key 11, figure 9)and pusher post gasket (key 7, figure 9). Either partmust be replaced if it is damaged or no longer pliable.

7. If the unit has a stem seal O-ring (key 64, figure 7or 11), this O-ring may be replaced by removing theretaining ring or cotter pin (key 28, figure 9) and discon-necting the lever from the valve carrier (key 26, figure 9or 11), removing the union nut (key 14, figure 9 or 11),disconnecting the pilot supply tubing (key 24, figure 9or 11), and sliding the lower casing (key 29, figure 9)away from the valve body (key 17, figure 9), with a diskor O-ring seat, the valve carrier must be pulled out ofthe lower casing to gain access to the O-ring. AnotherO-ring, held captive by the pressed-in bushing, is partof the lower casing assembly on a stem seal unit andnormally does not require replacement.

8. If clogging is suspected in the upstream regulatorpassages, disconnect the pilot supply tubing (key 24,figure 9 or 11), remove the filter assembly (key 75,figure 9), and blow through it to check for filter clogging.If necessary, to clean or replace filter parts in a standardP590 Series filter assembly, remove the following asshown in figure 10: filter body (key 1), machine screw(key 4), spring washer (key 6), gasket (key 7), washer(key 5), and filter element (key 2). Upon reassembly,one of the flat washers must go between the filterelement and filter head (key 3) and the other must gobetween the filter element and gasket.

9. If the lower casing was removed, install a newbody gasket (key 16, figure 9) and, with a disk or O-ringseat, slide the valve carrier into the casing. Then slidethe entire assembly into the valve body (disk or O-ringseat) and secure with the union nut. Secure the lever tothe valve carrier with the retaining ring or cotter pin.

10. Loosely reassemble the diaphragm and diaphragmplate so that the bolt holes and loading connection holein the diaphragm can be properly aligned with thecorresponding holes in the casing when the lever is fittedproperly into the pusher post. When this orientation ismade, install the collar (key 6, figure 9) and tighten thediaphragm rod into the pusher post (key 8, figure 9).

11. In order for the regulator to operate properly, theassembled collar, diaphragm, diaphragm plate, pusherpost, and diaphragm rod must be mounted on the ball ofthe lever so that the pusher post (key 8, figure 9)orientation is as shown in figure 9.

12. Install the upper casing and secure it to the lowercasing with the twelve cap screws and hex nuts. Putlower casing back on body and install union nut.

To avoid part damage due to overcom-pressing the main spring seat, always usemain spring seat 1E242724092 with mainspring OW019127022.

13. Install the main spring and main spring seat,turning the main spring seat until its bottom shoulder iseven with the bottom thread of the diaphragm rod.

14. Install a new spring case gasket (key 57, figure 9),the spring case, and the four cap screws, making surethe indicator stem, O-ring, and gaskets (keys 103, 111,and 108, figure 6) are installed if used.

15. Connect the loading tubing, then refer to the Start-up section for putting the regulator into operation.

Type 99

10

Types 61L, 61LD, 61LE (low) or 61H (highpressure) Pilots

This procedure is to be performed if changing thecontrol spring for one of a different range, or if inspect-ing, cleaning or replacing any other pilot parts. Keynumbers are referenced in figure 9.

1. Remove the closing cap (key 46) if used andunscrew the adjusting screw (key 45) to relieve controlspring compression.

2. Disconnect the loading tubing (key 53) and pilotsupply tubing (key 24).

3. Unscrew the eight cap screws (key 47) and removethe pilot assembly from the lower casing (key 29).

4. Use the projecting prong in the relay valve body(key 39) as the restraining member and remove thediaphragm nuts (key 13 and 51). Separate the parts andinspect the diaphragms (key 30 and 40) and O-ring seal(key 33). Replace if worn or damaged.

5. Unscrew the bleed orifice (key 52) from the yoke(key 37). Also removed with the bleed orifice are therelay disk assembly (key 48) and bleed valve (key 50).These parts can be unscrewed for inspection andreplacement, if necessary.

6. When reassembling the pilot, the relay disk holderassembly and both diaphragms should be tightened onthe yoke after it is placed in the body.

Note

Before putting the relay spring case overthe diaphragm, make certain the yoke issquare with respect to the prong in therelay body. (The yoke can bind on theprong if it is not square.)

7. Use care in reassembly to be sure the edges of thediaphragms slip properly into the recess on the lowercasing and relay valve body. With the pilot in place,check to see if it can be rocked. If it does not rock, it isin place and the diaphragm is free of wrinkles. With bothdiaphragms firmly in place, install the cap screws using12.5 foot-pounds (17 N•m) of torque. Tighten using acrisscross pattern to avoid placing a strain on the unit.Set the pilot control spring (key 43) according to theadjustment information in the Startup section.

8. Reinstall the closing cap (key 46, if used). If youhave a plastic closing cap, be sure that you have avent (key 60) in place of the pipe plug installed in thelow pressure pilot spring case.

Type 61HP (extra high pressure) Pilot

This procedure is to be performed if changing thecontrol spring for one of a different range, or if inspect-ing, cleaning, or replacing any other pilot parts. Keynumbers are referenced in figure 12.

1. Unscrew the adjusting screw (key 45) to relievecontrol spring compression.

2. Disconnect the loading tubing and pilot supplytubing.

3. Remove the six cap screws (key 123) which fastenthe spring case (key 44) spring seat (key 68) andcontrol spring (key 43) to the pilot body.

4. Unscrew the diaphragm nut (key 128) and remove adiaphragm plate (key 41), diaphragm (key 40), andanother diaphragm plate.

5. Unscrew the eight cap screws and remove the pilotbody (key 39) and gasket. Remove six cap screws,seal washers and the flange adapter.

6. Unscrew the relief valve body (key 119) andremove a diaphragm plate, diaphragm, and anotherdiaphragm plate. Inspect the diaphragm inserts (key150) and both diaphragms. Replace if worn or damaged.

7. The relief valve assembly can be further disas-sembled for inspection by unscrewing the relief valvecap (key 118).

8. Four machine screws (key 130) hold both yokecaps (key 37 and 116) to the yoke legs (key 31).Separate these parts to expose the pilot valve.

9. Unscrew the inlet orifice (key 38) to inspect itsseat, the inlet valve plug (key 117), and valve spring(key 124).

Note

Make certain that the yoke assembly issquare with respect to the cross memberof the body casting so that it will not bindon the body.

10. When reassembling, screw in the inlet orifice allthe way and secure the yoke caps to the yoke legs.Replace two diaphragm plates, the diaphragms, andinserts, two more diaphragm plates, the hex nut, andthe relief valve assembly.

11. Assemble the control spring and spring seat intothe body and spring case, being careful that the dia-phragms are free of wrinkles and properly in place, andevenly installing the cap screws in a crisscross pattern

Type 99

11

to avoid placing a strain on the unit. Install the bodyflange adapter with seal washers and cap screws. Installa new gasket and secure the pilot to the lower casingwith eight cap screws. Set the control spring according tothe adjustment information in the Startup section.

Converting the Pilot

Note

A complete pilot assembly rather thanindividual parts may be ordered for thefollowing conversion procedure. When alow pressure pilot is ordered for fieldconversion of a high pressure pilot orvice versa, the replacement pilot assem-bly comes complete with a pilot cover(key 132, figure 9). Remove this coverbefore installing replacement pilot on theexisting regulator. The cover can then beinstalled on the removed pilot to form acomplete Type 61 (low or high pressure)pilot for use elsewhere.

When changing one pilot construction (low pressure, highpressure, or extra high pressure) for another, all partsattached to the lower casing (key 29, figure 9) may needto be replaced with those appropriate for the desiredconstruction. At the very least, when changing from alow to high pressure pilot or vice versa, everything belowthe lower pilot diaphragm (key 40, figure 9) except thecap screws and the hex nut (key 47 and 13, figure 9) willneed to be replaced. Actuator and main valve parts mayremain unchanged unless a change in service conditionsrequires a change in seat construction, main spring, ormain spring seat. See the Parts List sections for obtain-ing the appropriate conversion parts.

Main Valve Trim with Disk or O-Ring Seat

This procedure is to be performed if inspecting, clean-ing, or replacing trim parts. Part key numbers for aType 99 regulator with disk or O-ring seat are refer-enced in figure 9, and part key numbers for the diskseat unique to the 1000 psig (69 bar) maximum inletregulator are referenced in figure 11.

Note

All trim maintenance may be performedwith the valve body (key 17, figure 9 or 11)in the line and with the elbow (key 23,figure 9 or 11), pilot supply tubing (key 24,figure 9 or 11), and pilot supply regulator(key 155, figure 11, if used) attached to the

valve body unless the valve body itselfwill be replaced.

1. Disconnect the pilot supply tubing and downstreamcontrol line.

2. Loosen the union nut (key 14, figure 9) and removethe lower casing (key 29, figure 9) with the cap screw(key 22, figure 9) or disk and holder assembly (key 18,figure 11) on disassembly or reassembly. A thin-walledsocket may be used to remove the orifice.

3. Access to the disk or O-ring (key 19, figure 9) canbe gained by removing the cap screw and retainer (key21, figure 9), while on the 1000 psig (69 bar) maximuminlet regulator the entire disk and holder assembly isremoved as a unit. If necessary, the holder (key 18,figure 9 or 11) or adapter (key 157, figure 11) can beremoved by taking out the cotter pin (key 25, figure 9or 11).

4. Install a new body gasket (key 16, figure 9) and anew disk, O-ring, or disk and holder assembly asnecessary. Then slide the entire assembly into thevalve body and secure with the union nut.

5. Connect the pilot supply tubing and downstreamcontrol line, then refer to the Startup section for puttingthe regulator into operation.

Parts Ordering

A serial number is assigned to each regulator, and it isstamped on both the actuator and pilot nameplates. Ifthe pilot is replaced, the new pilot will have its ownserial number different from the main valve serialnumber. Always indicate one or both serial numberswhen communicating with your Fisher Sales Represen-tative. When ordering a replacement part, be sure toinclude the complete eleven-character part number.

Parts ListKey Description Part Number

Repair kits include parts for regulator with compositiontrim only, key numbers 7, 11, 16, 19, 20, and 57. Alsoincluded are parts for pilot, key numbers 30, 33, 38, 40,48, 49, 50, 52, 71, 117, 126, 129, 150, 153 andP590 Series filter, key numbers 2 and 7.With low pressure pilot7/8-inch (22,2 mm) orifice R99LX0000121-1/8-inch (28,6 mm) orifice R99LX000022

With high pressure pilot7/8-inch (22,2 mm) orifice R99HX0000121-1/8-inch (28,6 mm) orifice R99HX000022

With extra high pressure pilot7/8-inch (22,2 mm) orifice R99HPX000121-1/8-inch (28,6 mm) orifice R99HPX00022

Type 99

12

Key Description Part Number

3 Main Spring, plated steel25 psid (1,7 bar d) maximum allowablepressure drop 1C27712702250 psid (3,4 bar d) maximum allowablepressure drop 1N801927022250 psid (17 bar d) maximumallowable pressure drop 1B8833270221000 psid (69 bar d) maximum allowablepressure drop–requires main springseat 1E242724092 0W019127022

4 Diaphragm Rod, 416 stainless steel 1B8834352325 Diaphragm Rod Guide Assembly

Brass w/bronze insert 1D9712000A2316 stainless steel 1B883535072

6 CollarBrass 1B883614012316 stainless steel 1B883635072

7* Pusher Post GasketComposition - for standard construction 1B883704022Fluoroelastomer - for oxygen service 1N430306382

8 Pusher Post AssemblyBrass w/bronze insert 1D9714000A2316 stainless steel 1B883835072316 stainless steel - for oxygen service 14B1320X012

9 Lever, steel 2F82342307210 Diaphragm Plate, plated steel 1B98922507211* Diaphragm

Nitrile 1B884102052Fluoroelastomer 1N378902312

12 Cap Screw, plated steel (12 required) 1B88422405213 Hex Nut, plated steel (13 required) 1A34032412214 Union Nut, iron 0Z01761906215 Body Snap Ring, plated steel 0Y095828982

Figure 6. Travel Indicator Assembly

20A7146-B

Travel Indicator Assembly (figure 6)Key Description Part Number

Complete Assembly (includes individual partslisted below) Bl2868000A2

1 Spring Case, cast iron 2L296209012101 Indicator Stem Adaptor, aluminum 1R395909012102 Indicator Cap, aluminum 1L290809012103 Indicator Stem, aluminum 1L296509022104 Disk Nut, plastic 1F730506992105 Machine Screw Nut, plated steel (2 required) 1A342024152106 Retainer, aluminum 1L291009012107 Indicator Window, glass 1L296706992108* Gasket, neoprene (2 required) 1L291103012109* Indicator Cover, plastic (2 required) 1L296405032110 Machine Screw, plated steel (8 required) 1A331928982111* O-Ring, nitrile (2 required) 1E591406992112 Indicator Scale, stainless steel 1J511638982

Actuator and Main Body Assembly(figures 6, 7, 8, 9, 10, and 11)Key Description Part Number

1 Standard Spring Case w/o travelindicator, cast iron 1B883119012

2 Main Spring Seat, plated steel250 psid (17 bar d) maximumallowable pressure drop, cast iron 1B8832190421000 psid (69 bar d) maximum allowablepressure drop 1E242724092

*Recommended spare parts

Type 99

13


16* Body GasketComposition 1A348004032Graphite- for oxygen service 1A3480X0022

17 Valve Body2-inch NPTCast iron 1C254619012Steel 2N153522012Brass 1C254612012Brass - for oxygen service 1C2546X0012

2-inch Class 125 FF flanged, cast iron 2D9865190122-inch Class 250 RF flanged, cast iron 2D9866190122-inch Class 150 RF flangedSteel 2E275622012Brass 2N379012012

2-inch Class 300 RF flangedSteel 2E275722012Brass 2N379112012

18 Holder for Type 99 regulatorDisk seatBrass 1B884314012316 stainless steel 1B884335072

O-Ring Seat7/8-inch (22,2 mm) orificeBrass 1E603214012316 stainless steel 1E603235072

1-1/8-inch (28,6 mm) orificeBrass 1E342414012316 stainless steel 1E342435072

18* Disk & Holder Assembly for 1000 psig(69 bar) maximum inlet regulator, nylon/316 stainless steel 1C1860000B2

19 Disk for Type 99 Regulator250 psi (17 bar differential) maximumallowable pressure dropNeoprene 1C997403032Nitrile 1C158703332Fluoroelastomer 1C9974X0012

400 psi (28 bar differential) maximumallowable pressure dropNylon 1E480603152TFE 1C997406242

19* O-Ring7/8-inch (22,2 mm) orificeNitrile 1D237506992Fluoroelastomer 1D237506382

1-1/8-inch (28,6 mm) orificeNitrile 1H8498X0012Fluoroelastomer 1H8498X0032


20* OrificeDisk seat for all regulators3/8-inch (9,5 mm) orifice, 416 stainless steel 19A7390X0121/2-inch (12,7 mm) orifice, 416 stainless steel 14A8410X0125/8-inch (19,9 mm) orifice, 416 stainless steel 19A7391X0127/8-inch x 3/8-inch (22,2 x 9,5 mm) orificeBrass 1N878114012316 stainless steel 1N8781X0012

7/8-inch x 1/2-inch (22,2 x 12,7 mm) orificeBrass 1C942314012316 stainless steel 1C942335072

7/8-inch x 5/8-inch (22,2 x 19,9 mm) orificeBrass 1C942414012316 stainless steel 1C9424X0012

3/4-inch (19,1 mm) orificeBrass 1C780414012316 stainless steel 1C780435072

7/8-inch (22,2 mm) orificeBrass 1C394714012316 stainless steel 1C394735072

1-inch (25,4 mm) orifice, brass 13A5017X0121-1/8-inch (28,6 mm) orificeBrass 1B884414012316 stainless steel 1B884435072

1/2-inch (12,7 mm) disk seat for 1000 psig (69 bar)maximum inlet regulator, 416 stainless steel 14A8410X012

O-Ring seat for all regulators7/8-inch (22,2 mm) orificeBrass 1E603014012316 stainless steel 1E603035072


21 RetainerDisk seat (19,1 mm)All except 3/4-inch (19,1 mm) or 1-1/8-inch (28,6 mm)orifice or 1000 psig (69 bar) maximum inlet regulatorBrass 1C394814012303 stainless steel 1C394835072

3/4-inch (19,1 mm) orificeBrass 1C780314012316 stainless steel 1C7803X0012

1-1/8-inch (28,6 mm) orificeBrass 1B884514012316 stainless steel 1B884535072

O-Ring seat for all regulators7/8-inch (22,2 mm) orificeBrass 1E603114012316 stainless steel 1E603135072


* Recommended spare part1. Required with lower casing 2N3794190122. Pilot supply regulator parts are found in Types 1301F and 1301G instruction manual.

Figure 7. O-Ring Stem Seal

20A7148-B

SEALANT

LUBRICANT

SEALANT LUBRICANT6426

Figure 8. O-Ring Sealed Handwheel

A6802

Type 99

14

Figure 9. Type 99 Regulator with 61L (low) or 61H (high pressure) Pilot

PILOT RELAY ASSEMBLY

COMPLETE REGULATOR SHOWING 61L PILOT AND DISK SEAT

O-RING SET DETAIL

AS

AS

AS

AS

PTS

PTSPTS

PTS

PTSLUB

PTS

1/4-INCH VENT SHOWN 90°COUNTERCLOCKWISE FROM NORMAL

CONTROLLINE TAP(OTHER TAP180° OPOSITE)

AS – APPLY ANTI-SEIZE COMPOUNDPTS – APPLY PIPE THREAD SEALANTLUB – APPLY LUBRICANT

Type 99

15

Figure 9. Type 99 Regulator with 61L (low) or 61H (high pressure) Pilot (continued)

PILOT RELAY AND COVER ASSEMBLY

HIGH PRESSURE PILOT PARTS

Type 99

16


22 Cap Screw, plated steel 1A39172405225 Cotter Pin, 316 stainless steel 1B10843899226 Valve Carrier

Brass 1E597114072416 stainless steel 1E597135132

27 Lever Pin316 stainless steel 1B884935162303 stainless steel 1C911635032

28 Retaining Ring for brass trim,plated steel (2 required) 1B885028982

28 Cotter Pin for stainless steel trim,316 stainless steel (2 required) 1F261938992

29 Lower Casing, cast ironStandard 4B983719012For use with optional protector, spring washer,& machine screw (keys 61, 62, and 63) 2N379419012

29 Lower casing Assembly for use w/O-ring stemseal, cast iron w/SST guide bushingComplete w/nitrile O-ring 2R7230000A2Complete w/fluoroelastomer O-ring 2R7230X0022

32 Nameplate, aluminum - - - - - - - - - - -56 Upper Casing, cast iron 3B88761901257* Spring Case Gasket

Composition 1B8877X0012Graphite - for oxygen service 1B8877X0022

58 Cap Screw, plated steel (4 required) 1A67512405261(1) Lower casing protector (not shown), brass 1N37951401262(1) Optional Spring Washer (not shown)

Plated brass (2 required) 1N33951899263(1) Optional Machine Screw (not shown)

Plated brass (2 required) 1H34051899264* O-Ring (for use only w/O-ring stem seal)

Nitrile 1E220206992Fluoroelastomer 1R620106382

73 Pipe plug, plated steel (not shown) 1A76752466275 Standard P590 Series Filter Assembly

(parts listed under separate heading)Type P594-1, brass FSP594-1Type P593-1, aluminum FSP593-1

77 BonnetCast iron 2V610219022Steel 2V610422012

133 Pipe Elbow, plated steel 1B860828992134 Pipe Nipple, plated steel 1B218826232152 Drive Screw, 18-8 stainless steel

(4 required for low pressure pilot and6 required for high pressure pilot) 1A368228982

155 Type 1301F Pilot Supply Regulator (2) (for useonly w/extra high pressure pilot) See footnote 2

156 Type H110 Pop Relief Valve, (for use onlyw/extra high pressure pilot) brass w/nitriledisk & 316 stainless steel spring Consult Factory

157 Adaptor for 1000 psig (69 bar) maximum inletregulator, 416 stainless steel 14A8411X012

159 Tag (for use only w/O-ring stem seal and extrahigh pressure pilot) alloy 1100 (not shown) 16A0957X012

Standard P590 Series Filter Assembly(figure 10)Key Description Part Number

1 Filter BodyType P594-1, brass 1E312414012Type P593-1, aluminum 1E312409012

2* Filter Element, cellulose 1E3126069923 Filter Head

Type P594-1, brass 1E312514012Type P593-1, aluminum 1E312509012

Figure 10. Standard P590 Series Filter Assembly

AJ5004-AA2135/IL


4 Machine ScrewType P594-1, brass 1J500218992Type P593-1, aluminum 1J500209012

5 Washer (2 required)Type P594-1, brass 1J500018992Type P593-1, aluminum 1J500010062

6 Spring Washer, plated carbon steel 1H8851289827* Gasket, composition 1F826804022

Pilot and Tubing Parts(3) Low or HighPressure Pilot (figure 9)Key Description Part Number

13 Hex Nut, plated steel (13 required) 1A34032412223 Elbow (2 required)

Brass 15A6002X292Aluminum 15A6002X402316 stainless steel 15A6002X612

24 Pilot Supply Tubing, disk or O-ring main valve seatCopper 1D8793000A2Copper - for oxygen service 0500201701WAluminum 1L917511072317 stainless steel 1L9175X0012316 stainless steel

30* Upper Relay DiaphragmNitrile 1B885202052Fluoroelastomer 1N162802332

31 Upper Relay Diaphragm Plate, plated steelFor use w/all low pressure pilots except LE 1B989225072For use w/all high pressure pilots and LElow pressure pilot 1D558425072

33* O-Ring SealNitrile 1B885506992Fluoroelastomer 1B8855X0012

34 ConnectorBrass 1D692214012Aluminum 15A6002X392316 stainless steel 15A6002X602

* Recommended spare part3. An entire pilot assembly may be ordered from your Fisher representativeby specifying a 61L, a 61H, or a 61HP pilot for field conversion.

PIPE THREADSEALANT

Type 99

17


37 YokeZinc 1D662544012Cast iron 1B984019012

38* Relay Orifice, stainless steelFor use w/25 psi (1,7 bar) maximum allowablepressure drop actuator main spring 1D373735032For use w/all other main springs 1C520135032For use w/oxygen service 1N162314042

39 Relay Valve Body, cast iron 2J58191901240* Lower Relay Diaphragm

Low pressure pilotNitrile 1B886002052Fluoroelastomer 1N536102332

High pressure pilotNitrile 1B894202192Fluoroelastomer 1N162702302

41 Lower Relay Diaphragm Plate, plated steelLow pressure pilot 1B989425072High pressure pilot 1D558325072

42 Spring Seat, plated steelLow pressure pilot 1B886225072High pressure pilot 1D558525072


43 Control Spring, plated steelFor use only w/LD low pressure pilot0 to 4-inches w.c. (0 to 10 mbar), orange 1B5585270523 to 12-inches w.c. (7 to 30 mbar), silver 1C680627222

For use w/all low pressure pilots0.25 to 2 psig (17 to 138 mbar), red 1B8863270221 to 5 psig (0,069 to 0,34 bar), yellow 1J8578270222 to 10 psig (0,14 to 0,69 bar), blue 1B8854270225 to 15 psig (0,34 to 1,0 bar), brown 1J85792714210 to 20 psig (0,69 to 1,4 bar), green 1B886527022

For use w/high pressure pilot, green stripe 0Y06642702244 Spring Case, cast iron

Low pressure pilot 1B983919012High pressure pilot, standard 1B984119012For use w/closing cap (not shown) 1H232619012

45 Adjusting ScrewLow pressure pilot, standard, zinc 1B537944012Handwheel-style, plated steel 1J496428982O-ring seated handwheel assembly 1R759414012High pressure pilot, standard, plated steel 1A279128982For use w/closing cap 1H236514012 1J881524102

Figure 11. 1000 Psig (69 bar) Maximum Inlet Regulator Partial Detail

A6803

Type 99

18


46 Closing CapFor use w/standard low pressure pilot, plastic T11069X0012For use w/handwheel-style low pressurepilot, brass (not shown) 1A926114012For use w/O-ring sealed handwheel 1R759314012For use w/high pressure pilot w/springcase 1H232619012, brass (not shown) 1H236514012

47 Cap Screw, plated steel (8 required) 1B98962405248* Relay Disk Assembly

Brass/Nitrile 1B8868000A2303 stainless steel/Nitrile 1B8868000B2Brass/Fluoroelastomer 1B8868X0012303 stainless steel/Fluoroelastomer 1B8868X0022

49* Bleed Valve Spring, stainless steelFor use w/low pressure pilot w/relay orifice1D373735032 or bleed valve 1H951635132 1E643637022For use w/all low and high pressure pilotsInlet pressure up to 250 psig (17 bar) 1C911537022Inlet pressure over 250 psig (17 bar) 1N859137022

50* Bleed Valve, stainless steelFor use w/LD low pressure pilot w/bleedvalve spring 1E643637022 1H951635132For use w/all low and high pressure pilots 1D986735132

51 Diaphragm NutBrass 1B989514012316 stainless steel 1B989535072

52* Bleed Orifice, 316 stainless steel 1B88733503253 Loading Tubing

Copper 1J4928000A2Aluminum 1J492711052316 stainless steel 1J4927X00A2

54 ConnectorBrass 1H628114012Aluminum 15A6002X432316 stainless steel 15A6002X992

55 Pipe NipplePlated steel (1 required w/copper tubingand 2 required w/aluminum tubing 1C488226232316 stainless steel 1C488238982Brass for use with Type 252 filter 1B292726012

59 Pipe plug, steel (not shown) 1A36922449260 Type Y602-1 Vent Assembly 27A5516X01268 Spring Seat

Handwheel-style low pressure pilot,steel, (not shown) 1J618124092High pressure pilot, zinc 0W019344022

69 Nameplate, aluminum - - - - - - - - - - -71* Closing Cap Gasket (for use only w/low

pressure pilot), neoprene 1P75330699272 Type Y602-1 Vent Assembly (for use only w/standard

high pressure pilot spring case),zinc/18-8 stainless steel 17A6570X012

78 Handwheel (for use only w/handwheel-stylelow pressure pilot), zinc 1J496144012

79 Machine Screw (for use only w/handwheel stylelow pressure pilot), plated steel 16A5763X012

80 Lockwasher (for use only w/handwheel-stylelow pressure pilot), steel 1A352332992

81 O-Ring (for use only w/O-ring sealedhandwheel assembly) 1D541506992

82 Hex nutFor use only w/O-ring sealedhandwheel assembly 1A351124122For use w/high pressure pilot, plated steel 1A352224122

114* Gasket (for use only w/high pressure pilotw/spring case 1H232619012), steel/composition (not shown) 1B487099202

115 Adaptor (for use only w/high pressure pilot w/spring case 1H232619012), steel (not shown) 1J881624092


132 Pilot Cover (used only w/complete replacementpilot assembly for field conversion), cast iron 2C518619012

152 Drive Screw, 18-8 stainless steel(4 required for low pressure pilot and6 required for high pressure pilot) 1A368228982

154 Drive Screw (for use only w/low pressurepilot), 18-8 stainless steel (2 required) 1A368228982

Type 61HP (Extra High Pressure) Pilot(figure 12)Key Description Part Number

23 ElbowFor use w/all standard regulatorsBrass 15A6002X292Aluminum 15A6002X402316 stainless steel 15A6002X202

For use w/1000 psig (69 bar) maximum inletregulator, steel 1J139628982

24 Pilot Supply TubingFor use w/all standard regulatorsCopper 1D7703000A2Aluminum 1K546511062316 stainless steel 1K5465X00A2

For use w/1000 psig (69 bar) maximum inletregulator, steel 19A4382X022

30* DiaphragmNeoprene 13A9840X012Fluoroelastomer/Dacron 13A9840X022

31 Yoke Leg, 416 stainless steel (2 required) 13A9838X01234 Connector (3 required)

For use w/all standard regulatorsBrass 1D692214012Aluminum 15A6002X392316 stainless steel 15A6002X602

For use w/1000 psig (69 bar) maximum inletregulator, steel 15A6002XW22

35 Cap Screw, plated steel (6 required) 1A93042405236 Elbow, plated steel 1B86082899237 Yoke Cap, 416 stainless steel 13A9837X01238 Inlet Orifice

Brass 1N379714012303 stainless steel 1D318135032

39 Pilot Body, cast iron 33A9845X01240* Diaphragm

Neoprene 13A9841X022Fluoroelastomer/Dacron(4) 13A9841X012

41 Diaphragm Plate,416 Stainless steel (4 required) 13A9839X012

43 Control Spring, plated steel (blue) 1D38722702244 Spring Case, cast iron

Standard 2P9694190121/4-inch NPT tapped for use w/closingcap 1E599914012 (not shown) 20A4735X012

45 Adjusting Screw, plated carbon steelStandard 1C216032992For use w/closing cap 1E599914012(not shown) 1F6635X0012

46 Closing Cap (for use only w/tapped springcase 20A4735012), brass (not shown) 1E599914012

47 Cap Screw, plated steel (8 required) 1B78772405249 Relief Valve Spring, 316 stainless steel 1C37403702250 Relief Valve plug, 316 stainless steel 1K37753516252 Bleed Orifice

Brass 1B329014012316 stainless steel 1K377625162

Type 99

19


53 Loading TubingFor use w/all standard regulatorsCopper 1D7702000A2Aluminum 1K546611072317 stainless steel 1K5466X0032

For use w/1000 psig (69 bar) maximum inletregulator, steel 1K5466X0042

55 Pipe Nipple, plated steel (2 required) 1C48822623260 Pipe plug, steel (not shown) 1A64952899268 Spring Seat, plated steel 10A3963X01272 Type Y602-12 Vent Assembly (for use only

w/tapped spring case 20A4735X012),zinc w/18-8 stainless steel screen 27A5516X012

82 Locknut, plated steel 1A352224122116 Yoke Cap, 416 stainless steel 13A9836X012117* Inlet Valve plug

304 stainless steel/nitrile 1D5604000B2304 stainless steel/fluoroelastomer 1N3798000C2

118 Relief Valve CapBrass 1D904914012303 stainless steel 1D904935072

119 Relief Valve BodyBrass 1D904814012316 stainless steel 1D904835072


120 Spring SeatBrass 1K377718992316 stainless steel 1K377735072

121 Spring Seat WasherBrass 1B495118992316 stainless steel 1K377835072

122 Pipe Bushing, malleable iron,zinc gal (not shown) 1B292821992

123 Cap Screw, plated steel (6 required) 1P327028982124 Valve Spring, 316 stainless steel 1B797937022125 Flange Adaptor, steel 23A9846X012126* Gasket, composition 0U0365X0022128 Diaphragm Nut, plated steel 1A346524122129* Valve Spring Seat, aluminum 1L251135072130 Machine Screw, 303 Stainless

steel (4 required) 1A866935032131 Pipe plug, steel (not shown) 1A369224092150 Diaphragm Insert (2 required)

Nitrile 13A9842X012Fluoroelastomer 13A9842X022

151 Nameplate, aluminum - - - - - - - - - - -152 Drive Screw, 18-8 Stainless

steel (2 required) 1A368228982153 Seal Washer, nitrile/plated steel (6 required) 13A9849X012

Figure 12. Type 61HP (extra high pilot) Pilot

A6804

A.S. – APPLY ANTI-SEIZE COMPOUND

Type 99

Printed in U.S.A. Regulators

©Fisher Controls International, Inc., 1979, 2001; All Rights Reserved

Fisher and Fisher Regulators are marks owned by Fisher Controls International, Inc. The Emerson logo is a trade mark and service mark of Emerson Electric Co.All other marks are the property of their respective owners.

The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, expressor implied, regarding the products or services described herein or their use or applicability. We reserve the right to modify or improve the designs or specifications of such products at any time without notice.

For information, contact Fisher Controls:Marshalltown, Iowa 50158 USA28320 Gallardon, FranceSao Paulo 05424 BrazilSingapore 128461

www.FISHERregulators.com

Documents

Manual 99 LD