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Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators

Jan 02, 2017

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  • Bulletin 71.2:1098-EGR

    D10

    0143

    X01

    2

    January 2016

    www.fisherregulators.com

    Types 1098-EGR and 1098H-EGR Pressure Reducing Regulators

    Differentialaslowas1 psi / 70 mbar

    QuickChangeTrimPackage

    OptionalNoiseAbatement Trim (Up to 30dBA reduction)

    In-Service Travel Inspection

    NPS1through12x6/ DN25through 300x150BodySizes Available

    Aqueous TrimPackages(ApplicationSpecific)

    W6956

    NoAtmosphericBleed

    EasyTopEntryIn-LineMaintenance

    MaterialsofConstructionCompatiblewithBelowGrade Installations

    StainlessSteelConstructionforCorrosiveEnvironmentsandOxygenService

    Figure 1. Types 1098-EGR Pressure Reducing Regulator

  • Bulletin 71.2:1098-EGR

    2

    BodySizesandEndConnectionStyles See Table 1MainValveMaximumInletPressure(1) 400 psig / 27.6 bar or body rating limit

    whichever is lowerMaximumPilotSupplyPressure(1)(2) 600 psig / 41.4 barOutletPressureRanges See Table 2MaximumandMinimumDifferentialPressures See Table 4ActuatorSizesandMaximumPressures See Table 3Pressure Registration ExternalTemperatureCapabilities(1) Nitrile(NBR): -20 to 180F / -29 to 82C Fluorocarbon(FKM): 0 to 300F / -18 to 149C, except water is limited to 0 to 200F / -18 to 93C Ethylenepropylene(EPR): -20 to 275F / -29 to 135COptions NACEConstruction MonitorConfiguration BoilerFuelConstruction Aqueous(Liquid)ServiceConstruction NoiseAbatementTrim

    1.Thepressure/temperaturelimitsinthisBulletinoranyapplicablestandardlimitationshouldnotbeexceeded.2.Forstabilityoroverpressureprotection,areducingregulatormaybeinstalledupstreamofthepilotaccordingtotheInstallationsection.

    SpecificationsTheSpecificationssectionlistspressurelimitationsandotherspecificationsforvariousTypes1098-EGRand1098H-EGRconstructions.Specificationsforagivenregulatorasitoriginallycomesfromthefactoryarestampedonnameplateslocatedonboththeactuatorandmainvalvebody,whilethepilotcontrolspringrangeisdisplayedonthepilotspringcaseandthepilotrestrictioncodeisstampedonthepilotbody(S=standardgain,L=lowgainandH=highgain).Todeterminemaximumpressureratings,theindividualratingsforthemainvalve,actuatorandpilotmustallbeconsidered.

    PortDiametersandTravels

    BODYSIZE PORTDIAMETERTRAVEL

    Standard RestrictedIn. mm

    NPS DN In. mm In. mm PercentageofFlowCapacity

    1 25 1-5/16 33.3 3/4 19 - - - - - - - - - - - -

    2 50 2-3/8 60.3 1-1/8 2930 3/8 9.5

    70 5/8 16

    3 80 3-3/8 85.7 1-1/2 38 40 7/8 22

    4 100 4-3/8 111

    2 51

    40 1 256 150

    7-3/16 1838 x 6 and

    12 x 6

    200 x 150 and

    300 x 150

    - - - - - - - -

    ConstructionMaterials Main Valve Body and Body Flange: Cast iron,

    WCCSteel,CF8MStainlesssteel Cage:CF8MStainlesssteel(Linear),416or316

    Stainlesssteel(WhisperTrim)orhardenedENCcoatedCastiron(QuickOpening)

    Seat Ring and Valve Plug: Hardened 416 Stainless steel or 316 Stainless steel

    Travel Indicator Assembly: Steel or Stainless steel exceptplasticforindicatorscale

    Piston Ring:Polytetrafluoroethylene(PTFE) O-rings and Soft Parts:Nitrile(NBR) (standard),

    Fluorocarbon(FKM)orEthylenepropylene(EPR) Spring:SteelorInconel X-750 Bolting: Steel, Stainless steel

    - continued -

    InconelisamarkownedbySpecialMetalsCorporation.

  • Bulletin 71.2:1098-EGR

    3

    Specifications(continued)

    ConstructionMaterials(continued) Actuator Bonnet: Zinc-plated Steel or 304 Stainless steel Diaphragm Case: Steel or Stainless steel Bolting: Steel, Stainless steel Diaphragm Plate: Cast iron, 316 or

    WCC Stainless steel Stem Guide: Stainless steel Diaphragm and O-rings: Nitrile(NBR)(standard),

    Fluorocarbon(FKM),Ethylenepropylene(EPDM) Stem: 17-4 PH Stainless steel (standard) or

    316 Stainless steel Pilot Mounting Parts Tubing and Connector Fittings: Steel (standard) or

    Stainless steel Pipe Bushing:Malleableiron,Stainlesssteel Pipe Nipples:Galvanizedsteel,Stainlesssteel Type6351Pilot Body, Body Plug and Spring Case:Aluminum Valve Plug Stem:Brass(standard) or Stainless steel Diaphragm, O-rings and Gaskets:Nitrile(NBR)

    (standard)orFluorocarbon(FKM) Type6352,6353,6354L,6354Mor6354HPilot Body, Body Plug, Spring Case and Closing Cap: Aluminum(standard) or Stainless steel Diaphragm:Nitrile(NBR),Fluorocarbon(FKM)or

    Ethylenepropylene(EPR) Types 6354M and 6354H Diaphragm

    Limiter: Aluminum O-rings and Soft Parts:Nitrile(NBR)(standard) or

    Fluorocarbon(FKM) Filter:Brass(TypeP594-1standard)orAluminum

    (TypeP593-1),exceptcelluloseforfilterelement 61SeriesPilots Body and Spring Case: Cast iron Upper and Lower Diaphragm: Nitrile(NBR),

    Neoprene(CR)orFluorocarbon(FKM) Composition Seats:Nitrile(NBR)or

    Fluorocarbon(FKM) O-rings:Nitrile(NBR)orFluorocarbon(FKM)

    TypeY600AMPilot Body, Spring Case and Lower Casing: Cast iron Diaphragm:Nitrile(NBR) Composition Seats:Nitrile(NBR) Trim:Aluminum Pilot and Actuator Vents Type Y602 vent assembly

    ApproximateWeights(WithStandard Single-PilotConstruction) Type 1098 Actuator Size30 NPS 1 / DN 25 Body: 55lbs/25kg NPS 2 / DN 50 Body: 75lbs/34kg NPS 3 / DN 80 Body: 115lbs/52kg NPS 4 / DN 100 Body: 165lbs/75kg NPS 6 / DN 150 Body: 350lbs/159kg NPS 8 x 6 / DN 200 x 150 Body: 625lbs/284kg NPS 12 x 6 / DN 300 x 150 Body: 1102lbs/500kg Size40(Standard) NPS 1 / DN 25 Body:65lbs/29kg NPS 2 / DN 50 Body: 85lbs/39kg NPS 3 / DN 80 Body: 125lbs/57kg NPS 4 / DN 100 Body: 175lbs/79kg NPS 6 / DN 150 Body: 360lbs/163kg NPS 8 x 6 / DN 200 x 150 Body: 635lbs/288kg NPS 12 x 6 / DN 300 x 150 Body: 1112 lbs/504kg Size70 NPS 1 / DN 25 Body:140lbs/64kg NPS 2 / DN 50 Body: 160lbs/73kg NPS 3 / DN 80 Body: 200lbs/91kg NPS 4 / DN 100 Body: 250lbs/113kg NPS 6 / DN 150 Body: 435lbs/197kg NPS 8 x 6 / DN 200 x 150 Body: 710lbs/322kg NPS 12 x 6 / DN 300 x 150 Body: 1187 lbs/538kg Type1098HSize30Actuator NPS 1 / DN 25 Body: 80lbs/36kg NPS 2 / DN 50 Body: 100lbs/45kg NPS 3 / DN 80 Body: 140lbs/64kg NPS 4 / DN 100 Body: 190lbs/86kg NPS 6 / DN 150 Body: 375lbs/170kg NPS 8 x 6 / DN 200 x 150 Body: 650lbs/295kg NPS 12 x 6 / DN 300 x 150 Body: 1127 lbs/511kg

    Table 1. Body Sizes and End Connection Styles

    BODYSIZECASTIRON STEELORSTAINLESSSTEEL

    NPS DN

    1 or 2 25 or 50 NPT,CL125FForCL250RF NPT,CL150RF,CL300RF,CL600RF,BWE,SWEorPN16/25/40

    3, 4 or 6 80, 100 or 150 CL125FForCL250RF CL150RF,CL300RF,CL600RF,BWEorPN16/25/40

    8 x 6 or 12 x 6 200 x 150 or 300 x 150 - - - - CL150RF,CL300RF,CL600RForBWE

  • Bulletin 71.2:1098-EGR

    4

    IntroductionTheTypes1098-EGRand1098H-EGRregulatorsprovideeconomicalandaccuratepressurecontrolinawidevarietyofapplications:naturalgasdistributionsystems;fuelgassupplytoindustrialboilers,furnaces,ovensandmixers;andlargecommercial/industrialestablishmentssuchasshoppingcentersandschools.Theyarealsousedinplantairserviceandinliquidservicewhereaslowstrokingtime(approximately30to90seconds)isdesiredon both opening and closing the main valve.

    Thesuperiorperformanceofthisregulatorisduetotheamplifyingeffectofthepilotandthetwo-pathcontrolsystem.Changesinoutletpressureactquicklyontheactuatordiaphragmtoprovidefastresponsetosystemchanges.Then,thepilotamplifiesanysmallsystemchangestopositionthemainvalveforprecisepressurecontrol.

    Bubble-tightshutoffisachievedutilizingknife-edgedseatsinthevalveplug.Whentheregulatorisintheclosedposition,theknife-edgedseatsmakeagas-tightsealagainsttheupperandlower(port)valveseal.Avarietyofcagesareofferedforstandard,speedofresponseandnoiseapplications.Thecage-guidedmetalplugprovidessuperiorcontrolandstability.

    PrincipleofOperationThepilot-operatedTypes1098-EGRand1098H-EGRregulatorsbothuseinletpressureastheoperatingmedium,whichisreducedthroughpilotoperationtoloadtheactuatordiaphragm.Outletordownstreampressureopposesloadingpressureintheactuatorandalsoopposesthepilotcontrolspring.TheType1098-EGRregulatoroperationschematicisshowninFigure2.

    Inoperation,assumethatoutletpressureisbelowthepilotcontrolsetting.Controlspringforceonthepilotdiaphragmthusopensthepilotvalveplug,providingadditionalloadingpressuretotheactuatordiaphragm.Thisloadingpressureforcestheactuatorstemupward,openingthemainvalveplugviaabumpconnection.Theupwardmotionoftheplugallowsgastoflowthroughthecageintothe downstream system.

    Whendownstreamdemandhasbeensatisfied,outletpressuretendstoincrease,actingonthepilotandactuatordiaphragms.Thispressureexceedsthepilotcontrol spring setting, moving the pilot diaphragm away andlettingthevalveplugspring(Type6351,61SeriesorTypeY600AMpilots)orbellows(Types6352through6354Mpilots)closethepilotvalveplug(unbalancedintheType6351or61SeriespilotsbutbalancedintheTypes6352through6354Mpilots).Excessloading

    TYPE1098-EGRWITH6350SERIESPILOT

    A6563

    TYPE6351TYPE1098-EGR

    TYPES6352,6353,6354

    INLETPRESSUREOUTLETPRESSURELOADINGPRESSUREATMOSPHERICPRESSURE

    Figure 2. Operational Schematics

  • Bulletin 71.2:1098-EGR

    5

    TYPE1098-EGRWITHTYPE61LDPILOT

    Figure 2. Operational Schematics (continued)

    TYPE1098-EGR

    TYPE1806

    A6641TYPE61LD

    INLETPRESSUREOUTLETPRESSURELOADINGPRESSUREATMOSPHERICPRESSURE

    TYPE1098-EGRWITHTYPEY600AMPILOTANDTYPEMR95HPRESSURESUPPLYREGULATOR

    TYPEMR95H

    TYPEY600AM

    FIXEDRESTRICTOR

    OPTIONAL:TYPE112RESTRICTOR

    INLETPRESSUREOUTLETPRESSUREATMOSPHERICPRESSURELOADINGPRESSUREPILOTSUPPLYPRESSURE

    M1008

    TYPE1098-EGR

  • Bulletin 71.2:1098-EGR

    6

    pressureontheactuatordiaphragmescapesdownstreamthroughthebleedhole(Type6351pilot),bleedorifice(61Seriespilot),restriction(Types6352through 6354Mpilots)orfixedrestrictor(TypeY600AMpilot).

    Reducedactuatorloadingpressurepermitsthemainvalvetoclose.Thecombinationofmainvalvespringforceandvalveplug