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B&G ASME Safety Relief Valves


Protect against hazardous operating pressures

ASME Safety Relief Valves protect fired and unfired hot water vessels against hazardous operating pressures.

  • Engineered in accordance with Section IV of the ASME boiler & pressure code for heating boilers with capacities certified by the National Board of Boiler and Pressure Vessel Inspectors.
  • Offer the highest BTUH ratings available on the market today for valves in their class (790,000 to 5,999,000 BTUH)
  • EPDM diaphragm operated (cast iron models) and diaphragm assisted (bronze models) have an effective area approximately 5 times greater than conventional ″pop-type″ relief valves to help overcome the effects of fouling.
  • Low differential between opening and closing pressures helps to prevent conditions under which system water might flash to steam and cause hammering.

Documentation: B_G ASME Safety Relief.pdf

↓   Series 790 Bronze (3/4")   ↓

790-15 ASME relief valve (15 PSIG)

Part No: 110120

$192.77 each

790-20 ASME relief valve (20 PSIG)

Part No: 110750

$231.65 each

790-25 ASME relief valve (25 PSIG)

Part No: 110751

$231.66 each

790-30 ASME relief valve (30 PSIG)

Part No: 110121

$192.77 each

790-36 ASME relief valve (36 PSIG)

Part No: 110122

$192.77 each

790-40 ASME relief valve (40 PSIG)

Part No: 110752

$231.65 each

790-45 ASME relief valve (45 PSIG)

Part No: 110123

$192.77 each

790-50 ASME relief valve (50 PSIG)

Part No: 110124

$192.77 each

790-55 ASME relief valve (55 PSIG)

Part No: 110753

$231.66 each

790-60 ASME relief valve (60 PSIG)

Part No: 110754

$231.66 each

790-65 ASME relief valve (65 PSIG)

Part No: 110755

$231.66 each

790-70 ASME relief valve (70 PSIG)

Part No: 110756

$231.66 each

790-75 ASME relief valve (75 PSIG)

Part No: 110125

$192.77 each

790-80 ASME relief valve (80 PSIG)

Part No: 110757

$231.65 each

790-85 ASME relief valve (85 PSIG)

Part No: 110758

$227.74 each

790-90 ASME relief valve (90 PSIG)

Part No: 110759

$231.66 each

790-95 ASME relief valve (95 PSIG)

Part No: 110760

$231.66 each

790-100 ASME relief valve (100 PSIG)

Part No: 110126

$192.77 each

790-105 ASME relief valve (105 PSIG)

Part No: 110761

$231.66 each

790-110 ASME relief valve (110 PSIG)

Part No: 110762

$231.66 each

790-115 ASME relief valve (115 PSIG)

Part No: 110763

$231.66 each

790-120 ASME relief valve (120 PSIG)

Part No: 110764

$231.66 each

790-125 ASME relief valve (125 PSIG)

Part No: 110127

$192.77 each
↓   Series 1170 Bronze (1")   ↓

1170-20 ASME relief valve (20 PSIG)

Part No: 110765

$346.34 each

1170-25 ASME relief valve (25 PSIG)

Part No: 110766

$346.34 each

1170-30 ASME relief valve (30 PSIG)

Part No: 110129

$233.27 each

1170-36 ASME relief valve (36 PSIG)

Part No: 110130

$233.27 each

1170-40 ASME relief valve (40 PSIG)

Part No: 110767

$346.34 each

1170-45 ASME relief valve (45 PSIG)

Part No: 110131

$233.27 each

1170-50 ASME relief valve (50 PSIG)

Part No: 110132

$233.27 each

1170-55 ASME relief valve (55 PSIG)

Part No: 110768

$346.34 each

1170-60 ASME relief valve (60 PSIG)

Part No: 110769

$346.34 each

1170-65 ASME relief valve (65 PSIG)

Part No: 110770

$346.34 each

1170-70 ASME relief valve (70 PSIG)

Part No: 110771

$346.34 each

1170-75 ASME relief valve (75 PSIG)

Part No: 110133

$233.27 each

1170-80 ASME relief valve (80 PSIG)

Part No: 110772

$346.34 each

1170-85 ASME relief valve (85 PSIG)

Part No: 110773

$346.34 each

1170-90 ASME relief valve (90 PSIG)

Part No: 110774

$346.34 each

1170-95 ASME relief valve (95 PSIG)

Part No: 110775

$346.34 each

1170-100 ASME relief valve (100 PSIG)

Part No: 110134

$233.27 each

1170-105 ASME relief valve (105 PSIG)

Part No: 110776

$346.34 each

1170-110 ASME relief valve (110 PSIG)

Part No: 110777

$346.34 each

1170-115 ASME relief valve (115 PSIG)

Part No: 110778

$346.34 each

1170-120 ASME relief valve (120 PSIG)

Part No: 110779

$346.34 each

1170-125 ASME relief valve (125 PSIG)

Part No: 110135

$233.27 each
↓   Series 3301 Iron (1-1/2")   ↓

3301-30 ASME relief valve (30 PSIG)

Part No: 110033

$1261.39 each

3301-36 ASME relief valve (36 PSIG)

Part No: 110080

$1374.03 each

3301-45 ASME relief valve (45 PSIG)

Part No: 110081

$1374.03 each

3301-50 ASME relief valve (50 PSIG)

Part No: 110082

$1374.03 each
↓   Series 4100 Iron (2")   ↓

4100-30 ASME relief valve (30 PSIG)

Part No: 110034

$1243.13 each

4100-36 ASME relief valve (36 PSIG)

Part No: 110084

$1398.45 each

4100-45 ASME relief valve (45 PSIG)

Part No: 110085

$1398.45 each

4100-50 ASME relief valve (50 PSIG)

Part No: 110086

$1398.45 each

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