PRESSURE/VACUUM VALVE & FLAME ARRESTER
MODEL 8800A
MODEL 8800A
The Groth Model 8800A Pressure/Vacuum Relief Valve & Flame Arrester are designed to protect your tank from damage created by overpressure or excessive vacuum, at the same time they provide protection from flame propagation. The result is reduced emission level and increased fire protection and safety.
Technical Details
• Sizes: 2” (DN 50) through 12” (DN 300)
• Pressure Settings 0.5oz/in2 to 15 psig
• Vacuum Settings: 0.5 oz/in2 to 12 psig
• Materials: Aluminum, Carbon Steel, Stainless Steel and other materials
Features
• Cushioned Air Seating
• Fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture
• Self draining housing and drip rings
• Spiral-wound, crimped ribbon flame element
• Modular Construction
Options
• Buna-N, Fluoropolymer, FKM
PAGE 2
SPECIFICATIONS
See TPD2 for Vacuum Settings and MAWP
†W.P. = Working Pressure. ‡On spring loaded valves, change model number. ◊150# ANSI drilling compatibility, F.F. on aluminum and R.F. on carbon steel and stainless steel alloys. 16 oz/in2 set with spacer. SS set weights-consult factory. *Some sizes require non-ferrous components to achieve 0.5 oz/in2 setting.
PAGE 3 A Inlet Flg◊ In (mm) Max. Set Pressure Weight Loaded Max. Set Vacuum. Weight Loaded oz/in2 (gm/cm2) Max. Setting Spring Loaded Min. Setting Weight Loaded Max. W.P.† for Min. Vacuum Setting Min. Vac. Setting for Max. W.P.† A Length In (mm) B Height In (mm) BB Height In (mm) C Width In (mm) Approx. AlShipWt. Lbs (kg) 2 (50) 12 (52.7) 13.63 (346)28.5 (724)33.87 (860)9.50"35 (16) 3 (80) 11 (48.3) 18 (457)29.63 (752)38.75 (984)11.50 (292)45 (20) 4 (100) 11 (48.3) 19.75 (502)34.63 (879) 46.25 (1175) 13 (330)70 (32) 6 (150) 16 (70.3) 28.75 (730) 43.25 (1099) 58.75 (1492) 19 (482) 125 (57) 8 (200) 16 (70.3) 36 (914) 51.38 (1305)69.50 (1765) 23.63 (600) 210 (95) 10 (250) 16 (70.3) 42 (1067) 58.88 (1495) 83 (2108) 30.75 (781)350 (160) 12 (300) 16 (70.3) 48.50 (1232)65.38 (1661)88.12 (2238) 35.75 (908) 500 (227) 16 oz/in 2 (70.3 gm/cm 2 ) 15 psig SPRING LOADED PRESSURE (1.05 kg/cm 2 ) 12 psig SPRING LOADED VACUUM (0.84 kg/cm 2 ) *0.5 oz/in2 WEIGHT LOADED (2.20 gm/cm2)
C B BB
Flow Capacity Calculation
Flow capacity values listed above are based on full open valves at 100% overpressure. Read the flow capacity at 100% overpressure directly from the table above. Use linear sted. If the allowable overpressure is less than 100%, modify the flow capacity using the appropriate “C” factor from the table. If allowable overpressure is more than 100%, consult your Groth Representative.
Calculate the percentage overpressure by the following formula. Note that all pressures are gauge pressure expressed in the same units of measure.
Pf = Flowing pressure
Ps = Set pressure
% OP = [(Pf - Ps)/Ps] x 100
Calculate flow capacity at less than 100% overpressure according to the following example.
Example Flow Capacity Calculation
6” Model 8800A
Example to find “C” factor from table:
Read “C” factor for 75% overpressure at intersection of row 70 and column 5
“C” factor at 75% OP = 0.87
1.Read flow capacity at set pressure from table Flow = 61,500 SCFH
4 InWC set pressure [Ps]2.Calculate overpressure
7 InWC flowing pressure [Pf]3.Read “C” factor from table
4.Calculate flow
% OP = [(7 - 4)/4] x 100 = 75%
= 0.87
PAGE 4 Air Flow Capacity at 100% Overpressure (Double Set Pressure) 1000 Standard Cubic Feet per Hour at 60° F Set Pressure (Ps) Size In (mm) InWCoz/in2 2 (50)3 (80)4 (100)6 (150)8 (200)10 (250)12 (300) 0.870.503.015.9810.721.534.855.262.3 1.000.583.296.6812.024.239.262.172.0 1.731.004.569.7017.636.358.492.0112 2.001.164.9610.719.339.964.2101125 2.601.505.7612.622.747.275.9120148 3.001.736.2613.724.851.782.9131163 3.462.006.7915.027.156.490.5143178 4.002.317.3616.329.561.599.0155195 6.003.479.2020.637.378.1125197249 8.004.6210.924.344.092.2148233295 10.05.7812.327.650.0105168264335 12.06.9313.630.655.4116186293372 15.08.6615.434.662.8132211332422 20.011.618.040.773.7155248390497 25.014.420.446.083.5175281442563 30.017.322.650.992.4194311489623 “C” Factor Table %OP0123456789 10 ••• Consult Factory••• 20 30 40 500.720.730.730.740.750.750.760.770.770.78 600.780.790.800.800.810.810.820.820.830.84 700.840.850.850.860.860.870.880.880.890.89 800.900.900.910.910.920.920.930.930.940.94 900.950.950.960.960.970.970.980.990.991.00
PRESSURE RELIEF CAPACITY
“C”
0.87
61,500
capacity Flow =
x
= 53,505 SCFH
PRESSURE RELIEF CAPACITY
Flow Capacity Calculation
Flow capacity values listed above are based on full open valves at 100% overpressure. Read the flow capacity at 100% overpressure directly from the table above. Use linear interpolation if the set pressure is not listed. If the allowable overpressure is less than 100%, modify the flow capacity using the appropriate “C” factor from the table. If allowable overpressure is more than 100%, consult your Groth Representative.
Calculate the percentage overpressure by the following formula. Note that all pressures are gauge pressure expressed in the same units of measure.
Pf = Flowing pressure
Ps = Set pressure
% OP = [(Pf - Ps)/Ps] x 100
Calculate flow capacity at less than 100% overpressure according to the following example.
Example Flow Capacity Calculation
6” Model 8800A
Example to find “C” factor from table:
Read “C” factor for 67% overpressure at intersection of row 60 and column 7
“C” factor at 67% OP = 0.82
1.Read flow capacity at set pressure from table Flow = 2,210 NCMH
150 mmWC Set Pressure [Ps]2.Calculate overpressure
250 mmWC Flowing Pressure [Pf]
% OP = [(250 - 150)/150] x 100 = 67%
3.Read “C” factor from table “C” = 0.82
4.Calculate flow capacity Flow = 0.82 x 2,210 = 1,812 NCMH
PAGE 5 Air Flow Capacity at 100% Overpressure (Double Set Pressure) 1000 Normal Cubic Meters per Hour at 0° C Set Pressure (Ps) Size In (mm) mmWC 2 (50)3 (80)4 (100)6 (150)8 (200)10 (250)12 (300) 22.00.090.180.320.641.041.651.91 50.00.140.300.551.131.822.873.53 75.00.180.390.701.462.353.704.62 1000.210.460.831.742.804.405.53 1500.260.581.062.213.555.597.05 2000.310.691.252.614.196.598.35 2500.350.781.422.974.767.489.50 3000.390.871.573.295.278.3010.5 3750.440.981.783.735.989.4112.0 5000.511.152.094.397.0211.014.1 6250.581.302.364.977.9612.515.9 7500.641.442.625.508.8013.817.6 “C” Factor Table %OP0123456789 10 ••• Consult Factory••• 20 30 40 500.720.730.730.740.750.750.760.770.770.78 600.780.790.800.800.810.810.820.820.830.84 700.840.850.850.860.860.870.880.880.890.89 800.900.900.910.910.920.920.930.930.940.94 900.950.950.960.960.970.970.980.990.991.00
Flow Capacity Calculation
Flow capacity values listed above are based on full open valves at 100% over-vacuum. Read the flow capacity at 100% over-vacuum directly from the table above. Use linear interpolation if the set vacuum is not listed. If the allowable over-vacuum is less than 100%, modify the flow capacity using the appropriate “C” factor from the table. If allowable over-vacuum is more than 100%, consult your Groth Representative.
Calculate the percentage over-vacuum by the following formula. Note that all pressures are gauge pressure expressed in the same units of measure.
Pf = Flowing pressure
Ps = Set pressure
% OV = [(Pf - Ps)/Ps] x 100
Calculate flow capacity at less than 100% over-vacuum according to the following example.
Example Flow Capacity Calculation
6” Model 8800A
Example to find “C” factor from table:
Read “C” factor for 75% Over-vacuum at intersection of row 70 and column 5
“C” factor at 75% OV = 0.87
1.Read flow capacity at set vacuum from table Flow = 46,700 SCFH
4 InWC set pressure [Ps]2.Calculate over-vacuum
% OV = [(7 - 4)/4] x 100 = 75%
7 InWC flowing pressure [Pf]3.Read “C” factor from table “C” = 0.87
4.Calculate flow capacity Flow =
x
= 40,629 SCFH
PAGE 6 Air Flow Capacity at 100% Over-vacuum (Double Set Vacuum) 1000 Standard Cubic Feet per Hour at 60° F Set Vacuum (Ps) Size In (mm) InWCoz/in2 2 (50)3 (80)4 (100)6 (150)8 (200)10 (250)12 (300)
1.000.582.775.739.7019.831.648.960.4 1.731.003.788.1513.628.345.169.489.8 2.001.164.108.9014.931.049.375.899.0 2.601.504.7410.417.436.257.788.6117 3.001.735.1411.318.939.562.996128 3.462.005.5612.320.542.968.4105139 4.002.316.0313.422.346.774.4114152 6.003.477.5416.928.158.993.8144193 8.004.628.8419.933.069.4110169227 10.05.7810.022.537.478.6125192258 12.06.9311.124.941.587.1139212286 15.08.6612.528.246.998.6157240324 20.011.614.733.155.1116184282381 25.014.416.637.562.3131209319432 30.017.318.341.568.9145231353478 “C” Factor Table %OP0123456789 10 ••• Consult Factory••• 20 30 40 500.720.730.730.740.750.750.760.770.770.78 600.780.790.800.800.810.810.820.820.830.84 700.840.850.850.860.860.870.880.880.890.89 800.900.900.910.910.920.920.930.930.940.94 900.950.950.960.960.970.970.980.990.991.00
VACUUM RELIEF CAPACITY
0.870.502.555.198.8017.928.644.353.6
0.87
46,700
VACUUM RELIEF CAPACITY
Flow Capacity
Calculation
Flow capacity values listed above are based on full open valves at 100% over-vacuum. Read the flow capacity at 100% over-vacuum directly from the table above. Use linear interpolation if the set vacuum is not listed. If the allowable over-vacuum is less than 100%, modify the flow capacity using the appropriate “C” factor from the table. If allowable over-vacuum is more than 100%, consult your Groth Representative.
Calculate the percentage over-vacuum by the following formula. Note that all pressures are gauge pressure expressed in the same units of measure.
Pf = Flowing pressure
Ps = Set pressure
% OV = [(Pf - Ps)/Ps] x 100
Calculate flow capacity at less than 100% over-vacuum according to the following example.
Example Flow Capacity Calculation
6” Model 8800A
Example to find “C” factor from table:
Read “C” factor for 67% over-vacuum at intersection of row 60 and column 7
“C” factor at 67% OV = 0.82
1.Read flow capacity at set vacuum from table Flow = 1,660 NCMH
150 mmWC Set Vacuum [Ps]2.Calculate over-vacuum
250 mmWC Flowing Vacuum [Pf]
3.Read “C” factor from table
% OV = [(250 - 150)/150] x 100 = 67%
“C” = 0.82
4.Calculate flow capacity Flow = 0.82 x 1,660 = 1,361 NCMH
PAGE 7 Air
1000
Set Vacuum (Ps) Size In (mm) mmWC2 (50)3 (80)4 (100)6 (150)8 (200)10 (250)12 (300) 22.00.070.150.260.520.841.291.60 50.00.120.250.420.871.392.132.78 75.00.140.320.531.111.772.723.59 1000.170.380.631.322.093.214.27 1500.210.480.791.662.644.055.42 2000.250.560.931.953.114.766.40 2500.280.631.052.213.535.407.27 3000.310.701.172.453.905.978.06 3750.350.801.322.784.426.779.10 5000.410.931.553.265.197.9410.7 6250.471.061.763.695.878.9812.2 7500.521.171.944.086.509.9013.5 “C” Factor Table %OP0123456789 10 ••• Consult Factory••• 20 30 40 500.720.730.730.740.750.750.760.770.770.78 600.780.790.800.800.810.810.820.820.830.84 700.840.850.850.860.860.870.880.880.890.89 800.900.900.910.910.920.920.930.930.940.94 900.950.950.960.960.970.970.980.990.991.00
Flow Capacity at 100% Over-vacuum (Double Set Vacuum)
Normal Cubic Meters per Hour at 0° C
NEW CASTLE
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www.bv-bm.com
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Groth Corporation, LLC reserves the right to alter the information in this publication without notice. // © 2021 Groth Corporation, LLC Reproduction without written permission is prohibited. LIT1307 // 0321 GROTHCORP.COM
HOW TO ORDER
For easy ordering, select proper model numbers
Flame Element 3 = Carbon Steel 5 = 316 SS Z = Special Pallet 1 = Aluminum
= Carbon Steel
= 316 SS
= Special
Diaphragm Material (Seat):
B = Buna-N
T = Fluoropolymer
V = FKM
Z = Special
= Special
Steel
Notes
• Include model number and setting when ordering.
• For special options, consult factory.
• When ordering steam jacket, include steam pressure/temperature.
* Stainless steel guides, stems are standard with aluminum and carbon steel bodies. Stainless steel seats standard with carbon steel bodies.
Indicates a 2” Model 8800A with Aluminum Body and Seat, 316 SS Pallet, Fluoropolymer Seat Diaphragm, and no other options.
GROTHCORP.COM
5
5
Z
3
5
Z
Seat 1 = Aluminum 3 = Carbon
= 316 SS Z = Special Body* 1 = Aluminum 3 = Carbon Steel
= 316 SS
MODEL # SIZEMATERIAL OPTIONS O
Z
= No Options
= Special Options
8800A 8801B 8802B 8803B 02 = 2” thru 12 = 12"
Example 8 8 0 0 0 2 1 1 A T O 5 1 Groth Corporation, LLC reserves the right to alter the information in this publication without notice. // © 2021 Groth Corporation, LLC Reproduction without written permission is prohibited. LIT19158 // 0321