PRESSURE RELIEF VALVES
MODELS2300A&2301A
TheGrothModels2300A&2301APressureReliefValvesaredesignedtoprotectyourtank fromdamagecreatedbyoverpressureorexcessivevacuum.Costlyproductevaporation lossesduetonormaltank“breathing”aregreatlyreduced.Becausethe2300Seriesproducts retaintoxicvapors,atmosphericcontaminationisminimizedwhichhelpstoprovide increasedfireprotectionandsafety.
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
•ATEXCertified
Options
•Buna-N,FKM
•SteamJacketValve
SPECIFICATIONS
Flange Size In(mm)
2(50)9.50(241)9.50(241)9.75(248)16.50(419)12(5)
3(80)11.50(292)13(330)8.62(219)22.00(550)15(7)
4(100)13(330)13(330)10.56(268)22.50(572)20(9)
6(150)19(480)19.50(495)15(381)30.50(784)30(14) 8(200)23.62(600)23.50(597)16.62(422)35.37(899)45(20)
10(250)30.75(781)25.50(648)17(431)41.37(1051)65(20)
16 oz/in2 Weight Loaded (70.3 gm/cm2) 15 psig Spfing Loaded (1.05 kg/cm2)**0.5 oz/in2 (2.2 gm/cm2)Weight Loaded
12(300)36(914)25.50(648)18(457)42.37(1076)100(45)
‡Onspringloadedvalves,changetomodel2301A.†Largersizesavailable-consultfactory.*150#ANSI.drillingcompatibility,F.F.onaluminumandR.F.oncarbonsteeland stainlesssteelalloys.Fiberglassdimensionsonrequest.**Somesizesrequirenon-ferrouscomponentstoachieve0.5oz/in2setting.
0.870.506.9815.426.158.588.4143211 1.000.587.5016.528.062.895.0154227 1.731.009.8521.736.882.5125203298
Flow Capacity Calculation
Flowcapacityvalueslistedabovearebasedonfullopen valvesat100%overpressure.Readtheflowcapacityat 100%overpressuredirectlyfromthetableabove.Use linearsted.Iftheallowableoverpressureislessthan 100%,modifytheflowcapacityusingtheappropriate“C” factorfromthetable.Ifallowableoverpressureismore than100%,consultyourGrothRepresentative.
Calculatethepercentageoverpressurebythefollowing formula.Notethatallpressuresaregaugepressure expressedinthesameunitsofmeasure.
Pf=Flowingpressure
Ps=Setpressure %OP=[(Pf-Ps)/Ps]x100
Calculateflowcapacityatlessthan100%overpressure accordingtothefollowingexample.
Example Flow Capacity Calculation
“C”FactorTable %OP0123456789 100.420.430.440.450.460.460.470.480.490.50 200.510.520.520.530.540.550.560.560.570.58 300.590.590.600.610.610.620.630.640.640.65 400.660.660.670.680.680.690.700.700.710.72 500.720.730.730.740.750.750.760.770.770.78 600.780.790.800.800.810.810.820.820.830.84 700.840.850.850.860.860.870.880.880.890.89 800.900.900.910.910.920.920.930.930.940.94 900.950.950.960.960.970.970.980.990.991.00
Example to find “C” factor from table: Read“C”factorfor75%overpressureatintersectionof row70andcolumn5
“C”factorat75%OP=0.87
6”Model2300A1.ReadflowcapacityatsetpressurefromtableFlow=125,000SCFH
4InWCsetpressure[Ps]2.Calculateoverpressure%OP=[(7-4)/4]x100=75%
7InWCflowingpressure[Pf]3.Read“C”factorfromtable“C”=0.87
4.CalculateflowcapacityFlow=0.87x125,000=108,750SCFH
20019.60.591.302.194.887.4012.017.7 22522.10.621.382.325.167.8412..718.7 25024.50.651.462.455.438.2513.419.7 27527.00.691.532.565.688.6314.020.6 30029.40.721.592.675.929.0014.621.5 37536.80.801.782.986.5710.016.223.9 50049.00.912.063.427.4911.418.627.4 62561.31.022.303.808.2812.720.630.3 75073.51.112.514.138.9713.822.432.9
Flow Capacity Calculation
Flowcapacityvalueslistedabovearebasedonfullopen valvesat100%overpressure.Readtheflowcapacityat 100%overpressuredirectlyfromthetableabove.Use linearinterpolationifthesetpressureisnotlisted.If theallowableoverpressureislessthan100%,modify theflowcapacityusingtheappropriate“C”factorfrom thetable.Ifallowableoverpressureismorethan100%, consultyourGrothRepresentative.
Calculatethepercentageoverpressurebythefollowing formula.Notethatallpressuresaregaugepressure expressedinthesameunitsofmeasure.
100.420.430.440.450.460.460.470.480.490.50 200.510.520.520.530.540.550.560.560.570.58 300.590.590.600.610.610.620.630.640.640.65 400.660.660.670.680.680.690.700.700.710.72 500.720.730.730.740.750.750.760.770.770.78 600.780.790.800.800.810.810.820.820.830.84 700.840.850.850.860.860.870.880.880.890.89 800.900.900.910.910.920.920.930.930.940.94 900.950.950.960.960.970.970.980.990.991.00 AirFlowCapacityat100%Overpressure(DoubleSetPressure)
Pf=Flowingpressure
Ps=Setpressure
%OP=[(Pf-Ps)/Ps]x100
Calculateflowcapacityatlessthan100%overpressure accordingtothefollowingexample.
Example Flow Capacity Calculation
“C”FactorTable %OP0123456789
Example to find “C” factor from table: Read“C”factorfor75%overpressureatintersectionof row70andcolumn5
“C”factorat75%OP=0.87
6”Model2300A1.ReadflowcapacityatsetpressurefromtableFlow=3,490NCMH 100mmWCSetPressure[Ps]2.Calculateoverpressure%OP=[(175-100)/100]x100=75% 175mmWCFlowingPressure[Pf]3.Read“C”factorfromtable“C”=0.87
4.CalculateflowcapacityFlow=0.87x3,490=3,036NCMH
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
Example to find “C” factor from table: Read“C”factorfor75%overpressureatintersectionof row70andcolumn5
“C”factorat75%OP=0.83
6”Model2301A1.ReadflowcapacityatsetpressurefromtableFlow=456,000SCFH
4psigSetPressure[Ps]2.Calculateoverpressure%OP=[(7-4)/4]x100=75%
7psigFlowingPressure[Pf]3.Read“C”factorfromtable“C”=0.83
4.CalculateflowcapacityFlow=0.83x456,000=378,480SCFH
barg2(50)3(80)4(100)6(150)8(200)10(250)12(300)
0.070.801.763.055.8310.115.521.7
0.100.972.133.707.1312.218.826.2 0.151.212.674.649.0515.223.432.7 0.201.433.165.4810.817.927.438.3 0.251.633.606.2512.520.331.143.4 0.301.824.026.9814.022.534.548.2 0.352.004.427.6815.624.637.852.7 0.402.184.818.3417.126.640.857.0 0.452.355.188.9918.628.543.861.1 0.502.515.549.6220.030.446.665.1 0.552.675.8910.221.432.249.468.9 0.602.836.2410.822.833.952.072.7 0.703.136.9012.025.637.357.179.8 0.803.427.5513.128.340.462.086.6 0.903.708.1714.231.043.566.793.2 1.003.988.7815.233.646.471.299.4
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. AirFlowCapacityat100%Overpressure(DoubleSetPressure)
Example Flow Capacity Calculation
300.420.430.440.450.470.480.490.500.510.52 400.530.540.550.560.570.580.590.600.610.62 500.630.640.650.660.670.670.680.690.700.71 600.720.720.730.740.750.760.760.770.780.79 700.800.800.810.820.820.830.840.850.850.86 800.870.870.880.890.900.900.910.920.920.93 900.940.940.950.960.960.970.970.980.991.00
Example to find “C” factor from table: Read“C”factorfor75%overpressureatintersectionof row70andcolumn5
“C”factorat75%OP=0.83
6”Model2301A1.ReadflowcapacityatsetpressurefromtableFlow=17,100NCMH
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=0.83x17,100=14,193NCMH
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HOWTOORDER
Foreasyordering,selectpropermodelnumbers MODEL#NOMINALSIZEMATERIALOPTIONS
2300AWeightLoaded
2301ASpringLoaded
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
#Aluminumbodynotavailableon2301A
Example
Indicatesa2”Model2300AwithAluminumBodyandSeat,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