VACUUM RELIEF VALVES
MODELS 1360A & 1361A
MODELS 1360A & 1361A
The Groth Models 1360A & 1361A are used when vacuum relief is the only requirement. Intake relief necessary under working conditions is achieved by a spring or weight loaded pallet. This feature reduces the possibility of tank damage due to an excessive vacuum condition. Valve size must be selected to perform required vacuum relief under operating and thermal conditions.
Technical Details
• Certification: ATEX and PED Approval
• Materials: Aluminum, Carbon Steel, Stainless Steel, special materials upon request
Model 1360A
• Sizes: 3”(DN80) through 14” (DN350)
• Vacuum Settings: 0.5 osi to 17.3 osi (2.15 mbarg to 1.19 barg)
Model 1361A
• Sizes: 3”(DN80) through 14” (DN350)
• Vacuum Settings: 1 psig to 12 psig (68.9 mbarg to 827 mbarg)
Features
• Modular Construction
• Cushioned air seating
• Fluoropolymer seating diaphragms minimize sticking caused by resinous vapors and atmospheric moisture
• Self-draining housing body and drip rings to protect seating surfaces from condensate and freezing
• Design avoids vacuum buildup due to binding or clogging of the vent
Options
• Seating Diaphragm Options: FKM, Buna-N or other materials
• Available with flange, consult factory
PAGE 2
Model 1360A
Model 1361A
SPECIFICATIONS
† 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. Fiberglass dimensions on request. 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
C A
B BB Size◊ Flange In (mm) Max. Set Vacuum Weight Loaded oz/in2 (gm/cm2) Max. Set Vacuum Spring Loaded Min. Set Vacuum Weight Loaded Max. W.P.† for Min. Vacuum Setting Min. Vac. Setting vs. Max. W.P.† A Length In (mm) B Height In (mm) C Width In (mm) E In (mm) BB Height In (mm) Approx. Ship Wt. for AI Lbs (kg) 3 (80) 11 (48.2) 8.62 (219)9.25 (235)7.50 (191)5.50 (140)16.25 (413)12 (6) 4 (100) 13 (57.0) 10 (254)11.50 (292)9 (229)6 (152)19.75 (502)17 (8) 6 (150) 16 (70.3) 11 (279)14.25 (362)11 (279)6.50 (165)24.62 (625)23 (10) 8 (200) 16 (70.3) 14.50 (368) 17.75 (451)13.50 (343) 8.50 (216)32.75 (832)42 (19) 10 (250) 16 (70.3) 18 (457) 21.25 (540)16 (406) 10.75(273) 38 (965)71 (32) 12 (300) 16 (70.3) 20.75 (527) 25.75 (654) 19(483) 12.50 (318) 45.37 (1152)83 (38) 14 (350)16 (70.3) 24.75 (629) 29.25 (743)21 (533) 15 (381) 48.75 (1238) 118 (54) 12 psig SPRING LOADED VACUUM (0.84 kg/cm 2 ) *0.5 oz/in 2 WEIGHT LOADED (2.20 gm/cm 2 ) See
Vacuum
and MAWP E
TPD for
Settings
MODEL 1360A 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”
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
PAGE 4
1360A 1.Read flow capacity at set vacuum from table Flow = 59,300 SCFH
over-vacuum % OV = [(7 - 4)/4] x 100 = 75% 7 InWC Flowing Vacuum [Pf]3.Read “C” factor from table “C” = 0.87 4.Calculate flow capacity Flow = 0.87 x 59,300 = 51,591 SCFH 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 3 (80)4 (100)6 (150)8 (200)10 (250)12 (300)14 (350) 0.870.508.0114.827.857.499.4136182 1.000.588.6115.929.961.6107146195 1.731.0011.320.839.380.9140192257 2.001.1612.122.442.286.9151207276 2.601.5013.825.548.098.9171235314 3.001.7314.827.351.5106184252337 3.462.0015.929.355.3114197271361 4.002.3117.131.559.3122212291388 6.003.4720.838.472.3149258354472 8.004.6223.944.083.0171297407542 10.05.7826.649.092.3190330452603 12.06.9328.953.4101207359492657 15.08.6632.159.1111230398546728 20.011.636.567.3127261453621829 25.014.440.274.1140288499684913 30.017.343.480.0151311538738985 “C” Factor Table %OV0123456789 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
Model
4 InWC Set Vacuum [Ps]2.Calculate
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 1360A VACUUM RELIEF CAPACITY
62561.31.132.083.918.0614.019.125.5 75073.51.212.244.228.7015.120.727.6
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
“C” Factor Table
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
6” Model 1360A 1.Read flow capacity at set vacuum from table Flow = 1,660
100 mmWC Set Vacuum [Ps]2.Calculate over-vacuum % OV = [(175 - 100)/100] x 100 = 75%
175 mmWC Flowing Vacuum [Pf]3.Read “C” factor from table “C” = 0.87
4.Calculate flow capacity Flow = 0.87 x 1,660 = 1,444 NCMH
PAGE 5
NCMH
300.590.590.600.610.610.620.630.640.640.65
900.950.950.960.960.970.970.980.990.991.00 Air Flow Capacity at 100% Over-Vacuum (Double Set Vacuum) 1000 Normal Cubic Meters per Hour at 0° C Set Vacuum (Ps) Size In (mm) mmWCmb 3 (80)4 (100)6 (150)8 (200)10 (250)12 (300)14 (350) 222.160.230.420.781.622.803.845.12 504.900.340.631.182.434.215.777.70 757.350.410.761.442.975.147.059.41 1009.800.480.881.663.425.928.1210.8 12512.30.530.981.853.816.619.0612.1 15014.70.581.072.024.167.229.8913.2 17517.20.631.162.184.497.7810.714.2 20019.60.671.232.324.788.2911.415.2 22522.10.711.302.455.068.7712.016.0 25024.50.741.372.585.329.2212.616.9 27527.00.781.432.705.569.6413.217.6 30029.40.811.492.815.7910.013.818.4 37536.80.901.653.126.4211.115.320.4
%OV0123456789 100.420.430.440.450.460.460.470.480.490.50 200.510.520.520.530.540.550.560.560.570.58
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
50049.01.021.883.557.3112.717.423.2
MODEL 1361A VACUUM RELIEF CAPACITY
1.0022.649.886.4196322494689 1.1023.652.090.2204336516720 1.2024.554.093.8213349536748 1.3025.456.097.2220362556775 1.4026.257.8100227374574801
1.5027.059.6103234385591825 1.7528.863.5110250411631880 2.0030.467.0116264433665928 2.2531.870.1122276453696971
2.5033.172.81262874717231009 2.7534.175.21312964867471042 3.0035.177.31343045007671070 3.2535.979.01373115117851095 3.5036.580.51403175207991115
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 pressure 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 1361A
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 = 0.83
1.Read flow capacity at set vacuum from table Flow = 166,000 SCFH
2 psig Set Vacuum [Ps]2.Calculate over-vacuum
% OV = [(3.50 - 2.0)/2.0] x 100 = 75%
3.5 psig Flowing Vacuum [Pf]3.Read “C” factor from table “C” = 0.83
4.Calculate flow capacity Flow = 0.83 x 116,000 = 96,280 SCFH
PAGE 6
“C”
Table %OV0123456789 10 •••
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
1000
Set
Size In (mm) psig3 (80) 4 (100)6 (150)8 (200)10 (250)12 (300) 14 (350)
Factor
Consult Factory••• 200.270.290.300.320.330.350.360.380.390.40 300.420.430.440.450.470.480.490.500.510.52
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 Air Flow Capacity at 100% Over-Vacuum (Double Set Vacuum)
Standard Cubic Feet per Hour at 60° F
Vacuum (Ps)
>3.50 CONSULT FACTORY FOR VACUUM SETTINGS GREATER THAN 3.5 PSIG
MODEL 1361A VACUUM RELIEF CAPACITY
0.070.661.462.535.749.3914.420.2 0.100.771.712.966.7211.016.923.7
0.140.891.963.417.7212.619.427.2 0.150.912.023.507.9313.019.927.9 0.160.942.073.588.1213.320.428.6 0.170.962.113.668.3013.620.929.3 0.180.982.153.738.4713.921.329.8 0.190.992.193.808.6214.121.730.4
0.201.012.233.868.7614.322.030.9 0.221.042.293.979.0114.722.731.7
0.241.062.344.069.2115.123.232.4
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 pressure 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
Example to find “C” factor from table: Read “C” factor for 72% over-vacuum at intersection of row 40 and column 2
“C” factor at 42% OV = 0.55
6” Model 1361A 1.Read flow capacity at set vacuum from table Flow = 3,200 NCMH
0.12 barg Set Vacuum [Ps]2.Calculate over-vacuum % OV = [(0.17 - 0.12)/0.12] x 100 = 42%
0.17 barg Flowing Vacuum [Pf]3.Read “C” factor from table “C” = 0.55
4.Calculate flow capacity Flow = 0.55 x 3,200 = 1,760 NCMH
PAGE 7
“C” Factor Table %OV0123456789 10 ••• Consult Factory ••• 20 0.270.290.300.320.330.350.360.380.390.40 30 0.420.430.440.450.470.480.490.500.510.52 40 0.530.540.550.560.570.580.590.600.610.62 50 0.630.640.650.660.670.670.680.690.700.71 60 0.720.720.730.740.750.760.760.770.780.79 70 0.800.800.810.820.820.830.840.850.850.86 80 0.870.870.880.890.900.900.910.920.920.93 90 0.940.940.950.960.960.970.970.980.991.00
Set
(Ps) Size In (mm) barg3 (80) 4 (100)6 (150)8 (200)10 (250)12 (300) 14 (350)
Air Flow Capacity at 100% Over-Vacuum (Double Set Vacuum) 1000 Normal Cubic Meters per Hour at 0° C
Vacuum
0.110.811.783.097.0011.517.624.7
0.120.841.853.207.2611.918.325.6 0.130.861.913.317.5012.318.926.4
>0.24 CONSULT FACTORY FOR VACUUM SETTINGS GREATER THAN 0.24 BARG
NEW CASTLE
2680 New Butler Rd. New Castle, PA 16101
Tel: 724-368-8725
Email: sales@portersvillerd.com
RICHMOND
700 Southlake Blvd. North Chesterfield VA 23236
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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HOW TO ORDER
For easy ordering, select proper model numbers
1360A Weight Loaded
1361A Spring Loaded
Notes
• Include model number and setting when ordering.
• For special options, consult factory.
Body Material 03" thru 14"
Pallet Material
Seat Material
= Aluminum
= Carbon Steel
= Stainless Steel
= Vinyl Ester Resin
= Furan Z = Special
• 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 3” Model 1360A with Aluminum Body and Seat, Stainless Steel Pallet, Fluoropolymer Seat Diaphragm, and no other options.
O = No Options
Z = Special Options
O = No Jacket
J = Steam Jacket
S = Spacer
H = Steam Jacket & Spacer
Diaphragm Material (Seat):
B = Buna-N
T = Fluoropolymer
V = FKM
Z = Special
1
3
5
6
7
GROTHCORP.COM
MODEL # SIZE MATERIAL OPTIONS
Example 6 0 A 1 0 3 1 T O O — 3 5 ooooo oo ooo ooo 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. LIT19146 // 0321