Groth 1260A 1261A Catalog

Page 1

PRESSURE RELIEF VALVES

MODELS1260A&1261A

MODELS1260A&1261A

TheGrothModels1260A&1261APressureReliefValvesaredesignedtoprotectyourtank fromdamagecreatedbyoverpressureorexcessivevacuum.Costlyproductevaporation lossesduetonormaltank“breathing”aregreatlyreduced.Becausethe1200Series productsretaintoxicvapors,atmosphericcontaminationisminimizedwhichhelpsto provideincreasedfireprotectionandsafety.

Technical Details

•Sizes:2”(DN50)through12”(DN300)

•PressureSettings:0.5oz/in2to15psig(2.15mbargto1.03barg)

•VacuumSettings:0.5oz/in2to12psig(2.15mbargto506mbarg)

•Material:Aluminum,CarbonSteel,StainlessSteel,Fiberglass,specialmaterials availableuponrequest

Features

•ModularConstruction

•Cushionedairseating

•Superiorperformingfluoropolymerdiaphragms

•Selfdraininghousingbodyanddriprings

•PeripheralGuidingandcenterstabilizingsystemforalignment

•PEDandATEXCertified

Options

•Buna-N,FKM

•SteamJacketValve

PAGE2 1260A1261A

SPECIFICATIONS

2(50)3(76)11(48.3)8.62(219)9.37(238)7.50(191)4.12(105)5.50(140)16.62(4222)16(7)

3(80)4(102)13(57.1)10(254)11.12(282)9(229)5(127)6(152)20.25(514)22(10)

4(100)6(152)16(70.3)11(279)13.87(352)11(279)6.50(165)6.50(165)25.62(651)29(13)

6(150)8(203)16(70.3)14.50(368)17.37(441)13.5(343)8.50(216)8.50(216)34.50(876)55(25)

8(200)10(254)16(70.3)18(457)21.25(540)16(406)9.75(248)10.75(273)39.75(1010)92(42)

10(250)12(305)16(70.3)20.75(527)23.62(600)19(483)10.25(260)12.50(318)46.37(1178)105(48) 12(300)14(356)16(70.3)24.75(629)26.62(676)21(533)11(279)15(381)49.25(1251)149(68)

15

‡Onspringloadedvalves,changemodelnumber.◊150#R.F.drillingcompatibilityF.F.onaluminumandR.F.oncarbonsteelandstainlesssteelalloys. Fiberglassdimensionsonrequest.16oz/in2setwithspacer.SSsetweights-consultfactory.*Somesizesrequirenon-ferrouscomponentstoachieve0.5oz/in2setting

Inlet Flg◊ In(mm) Outlet Flg◊ In(mm) Max.Set Pressure Weight Loaded oz/in2(gm/cm2
Max. Setting Spring Loaded Min. Setting Weight Loaded A Length In(mm) B Height In(mm) C Width In(mm) D In(mm) E In(mm) BB In(mm) Approx. ShipWt. forAI Lbs(kg)
)
PAGE3
psig Spring Loaded Pressure (1.05 kg/cm2) *0.5 oz/in2 Weight Loaded (2.20 gm/cm2)
B D E BB D E A C

0.870.506.8713.325.252.782.6135175 1.000.587.3914.327.156.688.8145188

Flow Capacity Calculation

Flowcapacityvalueslistedabovearebasedonfullopen valvesat100%overpressure.Readtheflowcapacityat 100%overpressuredirectlyfromthetableabove.Use linearsted.Iftheallowableoverpressureislessthan 100%,modifytheflowcapacityusingtheappropriate“C” factorfromthetable.Ifallowableoverpressureismore than100%,consultyourGrothRepresentative.

Calculatethepercentageoverpressurebythefollowing formula.Notethatallpressuresaregaugepressure expressedinthesameunitsofmeasure.

500.720.730.730.740.750.750.760.770.770.78 600.780.790.800.800.810.810.820.820.830.84 700.840.850.850.860.860.870.880.880.890.89 800.900.900.910.910.920.920.930.930.940.94 900.950.950.960.960.970.970.980.990.991.00 AirFlowCapacityat100%Overpressure(DoubleSetPressure)

Pf=Flowingpressure

Ps=Setpressure%OP=[(Pf-Ps)/Ps]x100

Calculateflowcapacityatlessthan100%overpressure accordingtothefollowingexample.

Example Flow Capacity Calculation

Example to find “C” factor from table: Read“C”factorfor75%overpressureatintersectionof row70andcolumn5

“C”factorat75%OP=0.87

6”Model1260A1.ReadflowcapacityatsetpressurefromtableFlow=112,000SCFH

4InWCsetpressure[Ps]2.Calculateoverpressure%OP=[(7-4)/4]x100=75%

7InWCflowingpressure[Pf]3.Read“C”factorfromtable“C”=0.87

4.CalculateflowcapacityFlow=0.87x112,000=97,440SCFH “C”FactorTable %OP0123456789 100.420.430.440.450.460.460.470.480.490.50 200.510.520.520.530.540.550.560.560.570.58 300.590.590.600.610.610.620.630.640.640.65

PAGE4 MODEL1260APRESSURERELIEFCAPACITY
1000StandardCubicFeetperHourat60°F SetPressure(P
)SizeIn(mm)
400.660.660.670.680.680.690.700.700.710.72
s
InWCoz/in22(50)3(80)4(100)6(150)8(200)10(250)12(300)
1.731.009.7118.835.674.3117190247 2.001.1610.420.238.279.8125205265 2.601.5011.923.043.590.8143233302 3.001.7312.824.746.897.5153250324 3.462.0013.726.650.2105164268348 4.002.3114.728.653.9112177288374
8.004.6220.740.475.8157248404525 10.05.7823.145.184.6175276450584 12.06.9325.249.492.4191301491638
6.003.4718.035.065.9137215351456
15.08.6628.155.2103211335546709 20.011.632.263.7118241383625811 25.014.435.871.2131267424692898 30.017.339.077.9143289460751975

222.160.190.370.711.482.333.804.93 504.900.290.561.072.233.505.727.42

30029.40.701.382.585.338.4213.717.8 37536.80.781.542.885.919.4015.319.8 50049.00.901.783.306.7510.717.522.7 62561.31.001.993.677.4611.919.425.1 75073.51.092.183.998.0712.921.027.3

Flow Capacity Calculation

Flowcapacityvalueslistedabovearebasedonfullopen valvesat100%overpressure.Readtheflowcapacityat 100%overpressuredirectlyfromthetableabove.Use linearinterpolationifthesetpressureisnotlisted.Ifthe allowableoverpressureislessthan100%,modifythe flowcapacityusingtheappropriate“C”factorfromthe table.Ifallowableoverpressureismorethan100%, consultyourGrothRepresentative.

Calculatethepercentageoverpressurebythefollowing formula.Notethatallpressuresaregaugepressure expressedinthesameunitsofmeasure.

Pf=Flowingpressure

Ps=Setpressure

%OP=[(Pf-Ps)/Ps]x100

Calculateflowcapacityatlessthan100%overpressure accordingtothefollowingexample.

Example Flow Capacity Calculation

“C”FactorTable %OP0123456789

100.420.430.440.450.460.460.470.480.490.50 200.510.520.520.530.540.550.560.560.570.58 300.590.590.600.610.610.620.630.640.640.65 400.660.660.670.680.680.690.700.700.710.72 500.720.730.730.740.750.750.760.770.770.78 600.780.790.800.800.810.810.820.820.830.84 700.840.850.850.860.860.870.880.880.890.89 800.900.900.910.910.920.920.930.930.940.94

Example to find “C” factor from table: Read“C”factorfor75%overpressureatintersectionof row70andcolumn5

“C”factorat75%OP=0.87

6”Model1260A1.ReadflowcapacityatsetpressurefromtableFlow=3,140NCMH 100mmWCSetPressure[Ps]2.Calculateoverpressure%OP=[(175-100)/100]x100=75% 175mmWCFlowingPressure[Pf]3.Read“C”factorfromtable“C”=0.87

4.CalculateflowcapacityFlow=0.87x3,140=2,732NCMH

PAGE5 MODEL1260APRESSURERELIEFCAPACITY
1000NormalCubicMetersperHourat0°C SetPressure(P
mmWCmb2(50)3(80)4(100)6(150)8(200)10(250)12(300)
757.350.360.691.312.724.286.999.10 1009.800.410.801.513.144.938.0510.4 12512.30.460.891.683.505.518.9911.7 15014.70.500.981.843.826.029.8012.7 17517.20.541.061.994.126.4910.613.7 20019.60.581.132.124.396.9211.314.7 22522.10.611.202.254.657.3312.015.5
900.950.950.960.960.970.970.980.990.991.00 AirFlowCapacityat100%Overpressure(DoubleSetPressure)
s)SizeIn(mm)
25024.50.651.262.364.897.7112.616.3 27527.00.681.322.485.118.0713.217.1

psig2(50)3(80)4(100)6(150)8(200)10(250)12(300)

Flow Capacity Calculation

Flowcapacityvalueslistedabovearebasedonfullopen valvesat100%overpressure.Readtheflowcapacityat 100%overpressuredirectlyfromthetableabove.Use linearinterpolationifthesetpressureisnotlisted.If theallowableoverpressureislessthan100%,modify theflowcapacityusingtheappropriate“C”factorfrom thetable.Ifallowableoverpressureismorethan100%, consultyourGrothRepresentative.

Calculatethepercentageoverpressurebythefollowing formula.Notethatallpressuresaregaugepressure expressedinthesameunitsofmeasure.

Pf=Flowingpressure

Ps=Setpressure %OP=[(Pf-Ps)/Ps]x100

Calculateflowcapacityatlessthan100%overpressure accordingtothefollowingexample. AirFlowCapacityat100%Overpressure(DoubleSetPressure)

Example Flow Capacity Calculation

500.630.640.650.660.670.670.680.690.700.71 600.720.720.730.740.750.760.760.770.780.79 700.800.800.810.820.820.830.840.850.850.86 800.870.870.880.890.900.900.910.920.920.93 900.940.940.950.960.960.970.970.980.991.00

Example to find “C” factor from table: Read“C”factorfor75%overpressureatintersectionof row70andcolumn5

“C”factorat75%OP=0.83

6”Model1261A1.ReadflowcapacityatsetpressurefromtableFlow=448,000SCFH

4psigSetPressure[Ps]2.Calculateoverpressure%OP=[(7-4)/4]x100=75%

7psigFlowingPressure[Pf]3.Read“C”factorfromtable“C”=0.83

4.CalculateflowcapacityFlow=0.83x448,000=371,840SCFH

PAGE6 MODEL1261APRESSURERELIEFCAPACITY
1000StandardCubicFeetperHourat60°F SetPressure
SizeIn(mm)
(Ps)
1.0028.053.492.5210345529739
5.0066.513022551083812861794 6.0073.714425056893214311997 7.0080.4158274622102215682188 8.0086.7171297674110716992371 9.0092.8184319724118918252546 10.098.6196340772126719452714 11.0104208360818134320622877 12.0110219380863141721763036 13.0115231400907148922863189 14.0120241418949155923933339 15.0125252437991162724983486 “C”FactorTable %OP0123456789 10•••ConsultFactory••• 200.270.290.300.320.330.350.360.380.390.40 300.420.430.440.450.470.480.490.500.510.52 400.530.540.550.560.570.580.590.600.610.62
2.0040.377.41343045007671070 3.0050.296.91683816259601340 4.0058.811419844873611301577

barg2(50)3(80)4(100)6(150)8(200)10(250)12(300)

0.070.821.572.726.1610.115.521.7 0.100.991.893.287.4512.218.826.2 0.151.232.364.099.2815.223.432.6 0.201.432.764.8010.917.927.438.3 0.251.623.145.4412.320.331.143.4 0.301.793.486.0413.722.534.548.2 0.351.953.816.6115.024.637.852.7 0.402.104.127.1416.226.640.957.0 0.452.254.417.6617.428.543.861.1 0.502.394.708.1618.530.446.665.1 0.552.524.988.6419.632.249.468.9 0.602.655.259.1020.633.952.172.6 0.702.895.7610.022.737.257.279.7 0.803.136.2510.824.640.462.186.5 0.903.356.7211.726.543.566.793.1 1.003.567.1812.528.346.471.299.4

Flow Capacity Calculation

Flowcapacityvalueslistedabovearebasedonfullopen valvesat100%overpressure.Readtheflowcapacityat 100%overpressuredirectlyfromthetableabove.Use linearinterpolationifthesetpressureisnotlisted.If theallowableoverpressureislessthan100%,modify theflowcapacityusingtheappropriate“C”factorfrom thetable.Ifallowableoverpressureismorethan100%, consultyourGrothRepresentative.

Calculatethepercentageoverpressurebythefollowing formula.Notethatallpressuresaregaugepressure expressedinthesameunitsofmeasure.

Pf=Flowingpressure

Ps=Setpressure

%OP=[(Pf-Ps)/Ps]x100

Calculateflowcapacityatlessthan100%overpressure accordingtothefollowingexample.

Example Flow Capacity Calculation

600.720.720.730.740.750.760.760.770.780.79 700.800.800.810.820.820.830.840.850.850.86 800.870.870.880.890.900.900.910.920.920.93 900.940.940.950.960.960.970.970.980.991.00

Example to find “C” factor from table: Read“C”factorfor75%overpressureatintersectionof row70andcolumn5

“C”factorat75%OP=0.83

6”Model1261A1.ReadflowcapacityatsetpressurefromtableFlow=16,200NCMH

0.4bargSetPressure[Ps]2.Calculateoverpressure%OP=[(0.7-0.4)/0.4]x100=75%

0.7bargFlowingPressure[Pf]3.Read“C”factorfromtable“C”=0.83

4.CalculateflowcapacityFlow=0.83x16,200=13,446NCMH

PAGE7
MODEL1261APRESSURERELIEFCAPACITY
SetPressure
AirFlowCapacityat100%Overpressure(DoubleSetPressure) 1000NormalCubicMetersperHourat0°C
(Ps) SizeIn(mm)
“C”FactorTable
200.270.290.300.320.330.350.360.380.390.40 300.420.430.440.450.470.480.490.500.510.52 400.530.540.550.560.570.580.590.600.610.62
%OP0123456789 10•••ConsultFactory•••
500.630.640.650.660.670.670.680.690.700.71

NEW CASTLE

2680 New Butler Rd. New Castle, PA 16101

Tel: 724-368-8725

Email: sales@portersvillerd.com

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Tel: 804-593-2384

Email: sales@portersvillerd.com

www.portersvilleprd.com

TALLMADGE

143 S.Thomas Rd. Tallmadge, OH 44278

Tel: 330-253-4800

Email: sales@portersvilleprd.com

KINGSPORT

1551 Shipley Ferry Road Blountville, TN 37617

Tel: 423.482.0496

Email: sales@portersvillerd.com

SIGNAL HILL

1500 E. Burnett St. Signal Hill, CA 90755

Tel: 562-424-8108

Email: Sales@BV-BM.com

www.bv-bm.com

SOUTH POINT

403 Technology Dr South Point, OH 45680

Tel: 740-377-0012

Email: sales@portersvilleprd.com

BAKERSFIELD

3800 Fruitvale Avenue Bakersfield, CA 93308

Tel: 661-589-6801

Email: Sales@BV-BM.com

BENICIA

3195 Park Road, Benicia, CA 94510

Tel: 707-590-6688

Email: Sales@BV-BM.com

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HOWTOORDER

Foreasyordering,selectpropermodelnumbers MODEL#NOMINALSIZEMATERIALOPTIONS

1260AWeightLoaded 1261APressureSpring

PalletMaterial

SeatMaterial

BodyMaterial

1=Aluminum

3=CarbonSteel

5=StainlessSteel

6=VinylEsterResin

7=Furan

Z=Special

Notes

•Includemodelnumberandsettingwhenordering.

•Forspecialoptions,consultfactory.

•Whenorderingsteamjacket,includesteampressure/temperature.

*Stainlesssteelguides,stemsarestandardwithaluminumandcarbonsteelbodies.

Stainlesssteelseatsstandardwithcarbonsteelbodies

Indicatesa2”Model1260AwithAluminumBodyandSeat,StainlessSteelPallet,FluoropolymerSeatDiaphragm,andnootheroptions.

O=NoOptions

Z=SpecialOptions

O=NoJacket

J=SteamJacket

S=Spacer

H=SteamJacket& Spacer

DiaphragmMaterial (Seat):

B=Buna-N

T=Fluoropolymer

V=FKM

Z=Special

02" thru 12"
GROTHCORP.COM
Example 60A1 2—021TOO 5 ooooo oo ooo ooo 1—— GrothCorporation,LLCreservestherighttoaltertheinformationinthispublicationwithoutnotice.//©2021GrothCorporation,LLC Reproductionwithoutwrittenpermissionisprohibited.LIT19143//0321

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