Valve Flame Arrester by prdtechgroup.com

VALVE & FLAME ARRESTER

COMBINATION

SAFETY PRODUCTS THAT PROTECT EQUIPMENT, LIVES & THE ENVIRONMENT

COMBINATION RELIEF VALVES AND FLAME ARRESTERS

SERIES 8800 MODEL 8800A, 8801B, 8802B, 8803A 3-8 SERIES 8800 Features 3

COMBINATION RELIEF VALVES AND FLAME ARRESTERS WITH PIPE-AWAY

SERIES 8820 MODEL 8820A, 8821B, 8822B, 8823A 9-15

VALVES & FLAME ARRESTER COMBOS // PAGE 2 MODEL NUMBER MODEL DESCRIPTION PAGE #

Pressure Relief Capacity

MODEL

Vacuum Relief Capacity

SERIES 8800 Specifications & How To Order 4 MODEL 8800A

5-6

8800A

7-8

SERIES

Specifications

SERIES

To Order

MODEL

Pressure Relief Capacity 12-13 MODEL

Vacuum Relief Capacity 14-15

additional product

CONTENTS

GROTH

SERIES 8820 Features 9

8820

8820 How

8820A

Please see our other Groth Datasheets for

lines: TABLE OF

ADDITIONAL

PRODUCTS

SERIES 8800

• Sizes 2" through 12"

• Pressure settings 0.5 oz/in2 to 15 psig

• Vacuum settings 0.5 oz/in2 to 12 psig

• Available in carbon steel (WCB/CS), stainless steel (CF8M/316), aluminum (356/6061) and other materials

• Proven spiral-wound, crimped-ribbon flame element

• Modular construction

• ATEX Certificate available

PRESSURE / VACUUM RELIEF VALVE WITH FLAME ARRESTER

The Model 8800A Pressure/Vacuum Valve & Flame Arrester combination units are designed to protect your tank from damage created by overpressure or excessive vacuum, at the same time that they provide protection from externally caused sources of heat and ignition. The result is increased fire protection and safety.

SPECIAL FEATURES

The Model 8800A Pressure/Vacuum Relief Valve offers Groth’s special “cushioned air” seating. Superior performing fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture. Self draining housings and drip rings protect seating surfaces from condensate and freezing.

END-OF-LINE

•Gas Group: NEC D, IEC IIA

•Operating Temperature <= 140°F (60°C)

•Pre-Ignition Pressure = Atmosphere

VALVES & FLAME ARRESTER COMBOS // PAGE 3

Specifications subject to change without notice. Certified dimensions available upon request.

HOW TO ORDER

For easy ordering, select proper model numbers

= No Options

= Special Options Diaphragm Material (Seat):

= Special

• 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

with carbon steel bodies.

VALVES & FLAME ARRESTER COMBOS // PAGE 4 B A C BB

Inlet Flg◊ (Metric) Max.Set Pressure Weight Loaded Max.Set Vacuum. Weight Loaded Max. Setting Spring Loaded Min. Setting Weight Loaded Max.W.P.† forMin. Vacuum Setting Min.Vac. Setting for Max.W.P.† A Length (Metric) B Height (Metric) BB Height (Metric) C Width (Metric) Approx. Ship Wt.Lbs. (Aluminum) 2"12oz/in213.63"28.5"33.87"9.50"35 (50 mm) (52.7 gm/cm2) (346 mm)(724 mm)(860 mm)(241mm)(16 kg) 3"11oz/in218"29.63"38.75"11.50"45 (80 mm) (48.3 gm/cm2) (457 mm)(752 mm )(984 mm)(292 mm)(20 kg) 4"11oz/in219.75"34.63"46.25"13"70 (100 mm) (48.3 gm/cm2) (502 mm)(879 mm)(1175 mm)(330 mm)(32 kg) 6"16oz/in228.75"43.25"58.75"19"125 (150 mm) (70.3 gm/cm2) (730 mm)(1099 mm)(1492 mm)(483 mm)(57 kg) 8"16oz/in236"51.38"69.50"23.63"210 (200 mm) (70.3 gm/cm2) (914 mm)(1305 mm)(1765 mm)(600 mm)(95 kg) 10"16oz/in242"58.88"83"30.75"350 (250 mm) (70.3 gm/cm2) (1067 mm)(1495 mm)(2108 mm)(781 mm)(160 kg) 12"16oz/in248.50"65.38"88.12"35.75"500 (300 mm) (70.3 gm/cm2) (1232 mm)(1661 mm)(2238 mm)(908 mm)(227 kg) 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/in 2 WEIGHT LOADED (2.20 gm/cm 2 )

MAWP

spring loaded valves, change model number. ◊150# ANSI drilling compatibility, F.F. on aluminum and R.F. on carbon steel

stainless steel

16 oz/in2 set

non-ferrous components to achieve 0.5

BB A C B

SeeTPD2 forVacuum Settingsand

†W.P. = Working Pressure. ‡On

and

alloys.

with spacer. SS set weights-consult factory. *Some sizes require

oz/in2 setting.

MODEL#SIZEMATERIALOPTIONS O

02" Thru 12" EXAMPLE Indicates a 2" Model 8800A with Aluminum Body and Seat, 316 SS Pallet, Fluoropolymer Seat Diaphragm, and no other options. 8 8 0 0 A 0 2 1 T 1 O 5

= Buna-N

= Fluoropolymer

= FKM

8800A

Loaded 8801B Pressure Spring 8802B Vacuum Spring

Pressure

Vacuum

1 = Aluminum 3

Carbon Steel 5

316 SS Z

Flame

Pallet

Seat

Weight

8803A

Springs

= Special

Element Material

Material

Material Body Material*

standard

aluminum

standard

NOTES 1 SPECIFICATIONS

with

and carbon steel bodies. Stainless steel seats

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

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

P s = Set pressure

% OP = [(Pf - Ps)/Ps] x 100

Calculate flow capacity at less than 100% overpressure according to the following example.

VALVES & FLAME ARRESTER COMBOS // PAGE 5

Example—FlowCapacityCalculation 1. Read flow capacity at set pressure from table Flow = 61,500 SCFH 6" Model 8800A 2. Calculate overpressure % OP = [(7 - 4)/4] x 100 = 75% 4 InWC set pressure [Ps] 3. Read “C” factor from table “C” = 0.87 7 InWC flowing pressure [Pf] 4. Calculate flow capacity Flow = 0.87 x 61,500 = 53,505 SCFH 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 “C”FactorTable %OP0123456789 10 •••ConsultFactory••• 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 MODEL 1220A FLOW CAPACITY CALCULATION AirFlowCapacityat100%Overpressure(DoubleSetPressure) 1000StandardCubicFeetperHourat60°F SetPressure(Ps)Size InWCoz/in22" (50mm) 3" (80mm) 4" (100mm) 6" (150mm) 8" (200mm) 10" (250mm) 12" (300mm)

8800A // PRESSURE RELIEF CAPACITY

MODEL

MODEL 8800A // PRESSURE RELIEF CAPACITY

MODEL 1220A 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.

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

P s = Set pressure

% OP = [(Pf - Ps)/Ps] x 100

Calculate flow capacity at less than 100% overpressure according to the following example.

VALVES & FLAME ARRESTER COMBOS // PAGE 6

AirFlowCapacityat100%Overpressure(DoubleSetPressure) 1000NormalCubicMetersperHourat0°C SetPressure(Ps)Size mmWC2"(50mm) 3" (80mm) 4" (100mm) 6" (150mm) 8" (200mm) 10" (250mm) 12" (300mm) 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

Example—FlowCapacityCalculation 1. Read flow capacity at set pressure from table Flow = 2,210 NCMH 6" Model 8800A 2. Calculate overpressure % OP = [(250 - 150)/150] x 100 = 67% 150 mmWC Set Pressure [Ps] 3. Read “C” factor from table “C” = 0.82 250 mmWC Flowing Pressure [Pf] 4. Calculate flow capacity Flow = 0.82 x 2,210 = 1,812 NCMH 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

“C”FactorTable %OP0123456789 10 •••ConsultFactory••• 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 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

P s = Set pressure

% OV = [(Pf - Ps)/Ps] x 100

Calculate flow capacity at less than 100% over-vacuum according to the following example.

VALVES & FLAME ARRESTER COMBOS // PAGE 7

AirFlowCapacityat100%Over-vacuum(DoubleSetVacuum) 1000StandardCubicFeetperHourat60°F SetVacuum(P

InWCoz/in22" (50mm) 3" (80mm) 4" (100mm) 6" (150mm) 8" (200mm) 10" (250mm) 12" (300mm)

1.000.582.775.739.7019.831.648.960.4 1.731.003.788.1513.628.345.169.489.8

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

MODEL 8800A // VACUUM RELIEF CAPACITY

s)Size

0.870.502.555.198.8017.928.644.353.6

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

Example—FlowCapacityCalculation 1. Read flow capacity at set vacuum from table Flow = 46,700 SCFH 6" Model 8800A 2. Calculate over-vacuum % OV = [(7 - 4)/4] x 100 = 75% 4 InWC Set Vacuum [Ps] 3. Read “C” factor from table “C” = 0.87 7 InWC Flowing Vacuum [P ] 4. Calculate flow capacity Flow = 0.87 x 46,700 = 40,629 SCFH 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

1220A FLOW CAPACITY CALCULATION “C”FactorTable %OP0123456789 10 •••ConsultFactory••• 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

MODEL

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.

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

P s = Set pressure

% OV = [(Pf - Ps)/Ps] x 100

Calculate flow capacity at less than 100% over-vacuum according to the following example.

VALVES & FLAME ARRESTER COMBOS // PAGE 8 AirFlowCapacityat100%Over-vacuum(DoubleSetVacuum) 1000NormalCubicMetersperHourat0°C SetVacuum (Ps) Size mmWC2"(50mm) 3" (80mm) 4" (100mm) 6" (150mm) 8" (200mm) 10" (250mm) 12" (300mm) 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

Example—FlowCapacityCalculation 1. Read flow capacity at set vacuum from table Flow = 1,660 NCMH 6" Model 8800A 2. Calculate over-vacuum % OV = [(250 - 150)/150] x 100 = 67% 150 mmWC Set Vacuum [Ps] 3. Read “C” factor from table “C” = 0.82 250 mmWC Flowing Vacuum [P ] 4. Calculate flow capacity Flow = 0.82 x 1,660 = 1,361 NCMH 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

MODEL 8800A // VACUUM RELIEF CAPACITY “C”FactorTable %OP0123456789 10 •••ConsultFactory••• 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

MODEL 1220A FLOW CAPACITY CALCULATION

SERIES 8820

• Sizes 2" through 12"

• Pressure settings

0.5 oz/in2 to 15 psig

• Vacuum settings

0.5 oz/in2 to 12 psig

• Available in carbon steel (WCB/CS), stainless steel (CF8M/316), aluminum (356/6061) and other materials

• Proven spiral-wound, crimped-ribbon flame element

• Modular construction

• ATEX Certificate available

PRESSURE / VACUUM RELIEF VALVE WITH FLAME ARRESTER (PIPE-AWAY)

The Model 8820A combination units are used for pressure and vacuum relief where vapors must be piped away. They are designed to protect your tank from damage created by overpressure or excessive vacuum, at the same time that they provide protection from externally caused sources of heat and ignition. The result is reduced emissions level and increased fire protection and safety.

SPECIAL FEATURES

The Model 8820A Pressure/Vacuum Relief Valve with flanged pipe-away outlet offers Groth’s special “cushioned air” seating. Superior performing fluoropolymer seating diaphragms are standard to minimize sticking caused by resinous vapors and atmospheric moisture. Self draining housings and drip rings protect seating surfaces from condensate and freezing. Buna-N, FKM and other seating diaphragms can be provided when required.

END-OF-LINE

Flanged Outlet with or without Discharge Piping

•Gas Group: NEC D, IEC IIA

•Operating Temperature <= 140°F (60°C)

•Pre-Ignition Pressure = Atmosphere

•Discharge Piping Length <= 10 pipe diameters

IN-LINE

•Gas Group: IEC IIA1, Methane (includes most Biogas applications)

•Operating Temperature <= 140°F (60°C)

•Pre-Ignition Pressure <= 1 psig

•Run-up Length <= 50 pipe diameters (2”)

•Run-up Length <= 20 pipe diameters (3”)

•Run-up Length <= 10 pipe diameters (4”–12”)

VALVES & FLAME ARRESTER COMBOS // PAGE 9

SPECIFICATIONS

Specifications subject to change without notice. Certified dimensions available upon request.

(50mm)(76mm)(48.2gm/cm2)(52.7gm/cm2)(361mm)(676mm)(854mm)(221mm)(514mm)(140mm)(20kg)

3"4"13oz/in

(80mm)(102mm)(57.0gm/cm2)(48.3gm/cm2)(457mm)(790mm)(1000mm)(241mm)(588mm)(152mm)(27kg) 4"6"16oz/in211oz/in

See TPD2 for Vacuum Settings and MAWP

(100mm)(152mm)(70.3gm/cm2)(48.3gm/cm2)(489mm)(940mm)(1203mm)(292mm)(679mm)(165mm)(41kg) 6"8"16oz/in216oz/in226.50"44.75"59.75"16.50"31.50"8.50"160 (150mm)(203mm)(70.3gm/cm2)(70.3gm/cm2)(673mm)(1136mm)(1518mm)(419mm)(800mm)(216mm)(73kg) 8"10"16oz/in216oz/in

(200mm)(254mm)(70.3gm/cm2)(70.3gm/cm2)(826mm)(1358mm)(1784mm)(533mm)(949mm)(273mm)(123kg) 10"12"16oz/in

12"14"16oz/in216oz/in242.75"71.62"91.37"28.62"50.12"15"600 (300mm)(356mm)(70.3gm/cm2)(70.3gm/cm2)(1086mm)(1819mm)(2321mm)(727mm)(1273mm)(381mm)(273kg)

† W.P. = Working Pressure. ‡On spring loaded valves, change model number. ◊150# R.F. 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

VALVES & FLAME ARRESTER COMBOS // PAGE 10

Inlet Flg◊ (Metric) Outlet Flg◊ (Metric) Max.Set Pressure Weight Loaded Max.Set Vacuum. Weight Loaded Max. Setting Spring Loaded Min. Setting Weight Loaded Max. W.P.† forMin. Vacuum Setting Min. Vac. Setting forMax. W.P.† A Length (Metric) B Height (Metric) BB Height (Metric) C Width (Metric) D (Metric) E (Metric) Approx. Ship Wt.Lbs. Aluminum

212oz/in214.25"26.62"33.62"8.75"20.25"5.50"45

2"3"11oz/in

211oz/in218"31.12"39.37"9.50"23.12"6"60

216oz/in237.25"64.50"84.12"24.75"45.25"12.50"420

)(959mm)(1638mm)(2137mm)(629mm)(1149mm)(318mm)(190kg)

15 psig SPRING LOADED PRESSURE (1.05 kg/cm 2 ) 12 psig SPRING LOADED VACUUM (0.84 kg/cm 2 ) *0.5 oz/in 2 WEIGHT LOADED (2.20 gm/cm 2 )

219.25"37"47.37"11.50"26.75"6.50"90

232.50"53.50"70.25"21"37.37"10.75"270

(250mm)(305mm)(70.3gm/cm2)(70.3gm/cm2

B D C D C BB A E

For easy ordering, select proper model numbers

MODEL#SIZEMATERIALOPTIONS

8820A Weight Loaded

8821B Pressure Spring

8822B Vacuum Spring

8823A Pressure & Vacuum Springs

O = No Options

Z = Special Options

Flame Element Material Pallet Material

Seat Material Body Material*

Z = Special 02" Thru 12"

Diaphragm Material (Seat):

B = Buna-N

T = Fluoropolymer

V = FKM

• Include model number and setting when ordering.

• For special options, consult factory

• When ordering steam jacket, include steam pressure/temperature.

1 = Aluminum

3 = Carbon Steel

5 = 316 SS Z = Special

* Stainless steel guides, stems are standard with aluminum and carbon steel bodies. Stainless steel seats standard with carbon steel bodies.

EXAMPLE

Indicates a 2" Model 8820A with Aluminum Body and Seat, 316 SS Pallet, Aluminum Flame Element, Fluoropolymer Seat Diaphragm, and no other options.

VALVES & FLAME ARRESTER COMBOS // PAGE 11

8 8 2 0 A 0 2 1 T 1 O 5

NOTES 1

HOW TO ORDER

MODEL 8820A // PRESSURE RELIEF CAPACITY

MODEL 1220A 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.

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

P s = Set pressure

% OP = [(Pf - Ps)/Ps] x 100

Calculate flow capacity at less than 100% overpressure according to the following example.

VALVES & FLAME ARRESTER COMBOS // PAGE 12 AirFlowCapacityat100%Overpressure(DoubleSetPressure) 1000StandardCubicFeetperHourat60°F SetPressure(Ps)Size InWCoz/in22" (50mm) 3" (80mm) 4" (100mm) 6" (150mm) 8" (200mm) 10" (250mm) 12" (300mm) 0.870.502.925.6810.320.732.351.559.1 1.000.583.196.3411.523.336.257.667.8 1.731.004.459.2316.834.453.084.4105 2.001.164.8410.118.537.858.292.6116 2.601.505.6411.921.744.668.5109138

4.002.317.2115.428.258.088.9141180 6.003.479.0719.535.773.6113179230

10.05.7812.126.147.798.6151240309 12.06.9313.328.952.9109167266343 15.08.6615.132.760.0124189301389 20.011.617.738.470.4146222354457 25.014.420.043.579.7165252400518 30.017.322.248.188.2182278443574

3.001.736.1213.023.748.874.8119151 3.462.006.6514.125.953.281.6130165

8.004.6210.723.042.186.8133211272

Example—FlowCapacityCalculation 1. Read flow capacity at set pressure from table Flow = 58,000 SCFH 6" Model 8820A 2. Calculate overpressure % OP = [(7 - 4)/4] x 100 = 75% 4 InWC set pressure [Ps] 3. Read “C” factor from table “C” = 0.87 7 InWC flowing pressure [Pf] 4. Calculate flow capacity Flow = 0.87 x 58,000 = 50,460 SCFH 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 “C”FactorTable %OP0123456789 10 •••ConsultFactory••• 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

MODEL 8820A // PRESSURE RELIEF CAPACITY

5000.501.092.004.126.2910.013.0 6250.571.232.264.677.1311.314.7 7500.631.362.505.177.8912.516.3

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.

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

P s = Set pressure

% OP = [(Pf - Ps)/Ps] x 100

Calculate flow capacity at less than 100% overpressure according to the following example.

VALVES & FLAME ARRESTER COMBOS // PAGE 13

Example—FlowCapacityCalculation 1. Read flow capacity at set pressure from table Flow = 2,080 NCMH 6" Model 8820A 2. Calculate overpressure % OP = [(250 - 150)/150] x 100 = 67% 150 mmWC Set Pressure [Ps] 3. Read “C” factor from table “C” = 0.82 250 mmWC Flowing Pressure [Pf] 4. Calculate flow capacity Flow = 0.82 x 2,080 = 1,706 NCMH 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 MODEL 1220A FLOW CAPACITY CALCULATION “C”FactorTable %OP0123456789 10 •••ConsultFactory••• 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 AirFlowCapacityat100%Overpressure(DoubleSetPressure) 1000NormalCubicMetersperHourat0°C SetPressure(Ps)Size mmWC2"(50mm) 3" (80mm) 4" (100mm) 6" (150mm) 8" (200mm) 10" (250mm) 12" (300mm) 22.00.080.170.310.620.961.531.80 50.00.140.290.521.071.652.623.28 75.00.170.370.671.382.123.374.27 1000.200.440.801.642.524.015.11 1500.260.551.012.083.195.076.51 2000.300.651.192.463.765.987.70 2500.340.741.352.794.276.798.75 3000.380.821.503.104.737.529.70 3750.430.931.703.515.368.5311.0

MODEL 8820A // VACUUM RELIEF CAPACITY

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.

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

P s = Set pressure

% OV = [(Pf - Ps)/Ps] x 100

Calculate flow capacity at less than 100% over-vacuum according to the following example.

VALVES & FLAME ARRESTER COMBOS // PAGE 14

AirFlowCapacityat100%Over-vacuum(DoubleSetVacuum) 1000StandardCubicFeetperHourat60°F SetVacuum(P

InWCoz/in22" (50mm) 3" (80mm) 4" (100mm) 6" (150mm) 8" (200mm) 10" (250mm) 12" (300mm)

1.000.582.775.739.7019.831.648.960.4

3.462.005.5612.320.542.968.4105139

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

s)Size

0.870.502.555.198.8017.928.644.353.9

1.731.003.788.1513.628.345.169.490.7 2.001.164.108.9014.931.049.375.899.0 2.601.504.7410.417.436.257.788.6117 3.001.735.1411.318.939.562.996.0128

4.002.316.0313.422.346.774.4114152 6.003.477.5416.928.158.993.8144193

Example—FlowCapacityCalculation 1. Read flow capacity at set vacuum from table Flow = 46,700 SCFH 6" Model 8820A 2. Calculate over-vacuum % OV = [(7 - 4)/4] x 100 = 75% 4 InWC Set Vacuum [Ps] 3. Read “C” factor from table “C” = 0.87 7 InWC Flowing Vacuum [P ] 4. Calculate flow capacity Flow = 0.87 x 46,700 = 40,629 SCFH 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

1220A FLOW CAPACITY CALCULATION “C”FactorTable %OV0123456789 10 •••ConsultFactory••• 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

MODEL

MODEL 8820A // VACUUM RELIEF CAPACITY

MODEL 1220A 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.

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

P s = Set pressure

% OV = [(Pf - Ps)/Ps] x 100

Calculate flow capacity at less than 100% over-vacuum according to the following example.

VALVES & FLAME ARRESTER COMBOS // PAGE 15

AirFlowCapacityat100%Over-vacuum(DoubleSetVacuum) 1000NormalCubicMetersperHourat0°C SetVacuum(Ps)Size mmWC2"(50mm) 3" (80mm) 4" (100mm) 6" (150mm) 8" (200mm) 10" (250mm) 12" (300mm) 22.00.070.150.260.520.841.291.60 28.00.080.170.280.580.921.432.00 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

Example—FlowCapacityCalculation 1. Read flow capacity at set vacuum from table Flow = 1,660 NCMH 6" Model 8820A 2. Calculate over-vacuum % OV = [(250 - 150)/150] x 100 = 67% 150 mmWC Set Vacuum [Ps] 3. Read “C” factor from table “C” = 0.82 250 mmWC Flowing Vacuum [P ] 4. Calculate flow capacity Flow = 0.82 x 1,660 = 1,361 NCMH 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

“C”FactorTable %OV0123456789 10 •••ConsultFactory••• 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

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