Series 174A Boiler Pressure Relief Valves are used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. They have a bronze body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 174A resists corrosive water conditions sticking, and freezing, and it prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control.
Relief Valves 52
This 3/4 inch lead free vacuum relief valve is suitable for low pressure steam and water service, and is ideal for use in domestic water heaters and supply tanks. This valve automatically allows air to enter into the piping system to prevent vacuum conditions that could siphon water from the system and damage water equipment. It consists of a lead free brass body construction with NPT male inlet connection, and a protective cap. Maximum working pressure is 200 psi.
Cast bronze body - Stainless steel spring - 3 inch long element - 210 degree maximum temperature
Cast bronze body - Stainless steel spring - 4-3/8 inch long element - 210 degree maximum temperature
600# WOG (non-shock) - 1/4 turn operation - Full port - Adjustable packing - Blow out proof stem - 3331AB hot valve (red handle) - 3332AB cold valve (blue handle)
APCOM 100108600 Temperature And Pressure Relief Valve, For Use With: Model NCLX LS/LLL100XL Residential and Commercial Water Heater, Specifications: 3/4 in MNPT, 210 deg F, 150 psi
Series 174A Boiler Pressure Relief Valves are used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. They have a bronze body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 174A resists corrosive water conditions sticking, and freezing, and it prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control.
200,000 BTU/hr relief - 600# WOG (non-shock) - 1/4 turn operation - Full port - Adjustable packing - Blow out proof stem - Integral hose end drain valve - Integral relief valve port - 3431AB hot valve (red handle) - 3432AB cold valve (blue handle)
This 1 inch lead free bronze automatic reseating temperature and pressure relief valve with an 7 inch thermostat is installed directly in tank tappings and is used in commercial applications to provide automatic temperature and pressure protection for hot water supply tanks and hot water heaters. It features a lead free bronze body with NPT male inlet and NPT female outlet connections, thermo-bonded coated thermostat, tamper resistant bonnet screws, automatic reseating feature, and test lever. The temperature relief is 210 degrees F and the pressure relief is 150 psi. Non-mechanical seat to disc alignment. Thermostat is accurate and proven
Boshart Industries relief valves are recommended for all cold water system installations to protect against damage to piping and pressure tanks. Field adjustments are not recommended for these relief valves. Any changes made to the pre-set pressure is entirely at the risk of the person(s)/company who make the adjustment. Relief valves must be installed so that they drain to a floor drain, sump or other safe location with an air break. If an outlet pipe is used then it must be at least the same diameter as the relief valve outlet.
Boshart Industries Relief Valve, Lead-Free Non-Adjustable Standard, 1/2 in Nominal, MNPT x FNPT End Style, 75 psi Pressure, 140 deg F, Media: Water, 2.45 in Inlet to Outlet Length, Brass Body, Stainless Steel Trim, Buna-N Sealing Disc Softgoods, 1.01 in L x 1.5 in W x 2.48 in H Dimensions
This 1/2 inch pressure relief valve is used in residential applications to protect against excessive pressure on domestic storage tanks and tankless water heaters. It consists of a lead free copper silicon body construction with 1/2 inch NPT threaded male inlet and 1/2 inch NPT threaded female outlet test lever, and stainless steel spring. It is ANSI Z21.22 approved, listed and certified by CSA. The pressure relief is set at 150 psi
Adjustable pressure range from 20 PSIG to 80 PSIG - Factory set at 30 PSIG - 250 degree maximum temperature
Boshart Industries relief valves are recommended for all cold water system installations to protect against damage to piping and pressure tanks. Field adjustments are not recommended for these relief valves. Any changes made to the pre-set pressure is entirely at the risk of the person(s)/company who make the adjustment. Relief valves must be installed so that they drain to a floor drain, sump or other safe location with an air break. If an outlet pipe is used then it must be at least the same diameter as the relief valve outlet.
Boshart Industries Pressure Relief Valve, Lead-Free Standard, 3/4 x 1/2 in Nominal, MNPT x FNPT End Style, 140 deg F, Brass Body, 2.45 in L x 1.45 in W x 1.05 in H Dimensions
Cast bronze body - Stainless steel spring - 4-3/4 inch long element - 210 degree maximum temperature
Flat seat, PTFE faced disc for positive seal - Standard set pressure of 15 PSIG - Positive drainage of condensate from seat area
Adjustable pressure range from 15 PSIG to 160 PSIG - Factory set at 40 PSIG - 250 degree maximum temperature
Series 740 Boiler Pressure Relief Valves are used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. They have an iron body construction with expanded outlet drain connections for hot water space heating boilers, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 740 offers large discharge capacity, resists corrosive water conditions, resists sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control. Iron body with expanded outlets. Non-mechanical seat-to-disc alignment will not stick or freeze. Seat is located above drain to prevent water from being trapped and sediment from fouling the seat
Adjustable pressure range from 20 PSIG to 80 PSIG - Factory set at 30 PSIG - 250 degree maximum temperature
This 1 inch lead free bronze automatic reseating temperature and pressure relief valve with an 5 inch thermostat is installed directly in tank tappings and is used in commercial applications to provide automatic temperature and pressure protection for hot water supply tanks and hot water heaters. It features a lead free bronze body with NPT male inlet and NPT female outlet connections, thermo-bonded coated thermostat, tamper resistant bonnet screws, automatic reseating feature, and test lever. The temperature relief is 210 degrees F and the pressure relief is 150 psi. Non-mechanical seat to disc alignment. Thermostat is accurate and proven
2,700,000 BTU/hr relief - 600# WOG (non-shock) - 1/4 turn operation - Full port - Adjustable packing - Blow out proof stem - Integral hose end drain valve - 3421AB hot valve (red handle) - 3422AB cold valve (blue handle)
Factory set at 30 PSIG - 250 degree maximum temperature
200,000 BTU/hr relief - 600# WOG (non-shock) - 1/4 turn operation - Full port - Adjustable packing - Blow out proof stem - Integral hose end drain valve - Integral relief valve port - 3431LAB hot valve with long body (red handle) - 3432AB cold valve (blue handle)
This 3/4 inch lead free temperature and pressure relief valve is designed to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters up to 105,000 BTU/hr. This two-in-one relief valve provides a proven and cost effective means to protect against excessive temperature and pressure emergency conditions. It features a lead free copper alloy body with NPT male inlet and NPT female outlet connections, a unique thermostat with special thermo-bonded coating with 8 inch extension, and test lever. The temperature relief is 210 degrees F (99 degrees C) and the pressure relief is set at 150 psi. ASME rated and CSA listed
This 3/4 inch lead free temperature and pressure relief valve is designed to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters up to 105,000 BTU/hr. This two-in-one relief valve provides a proven and cost effective means to protect against excessive temperature and pressure emergency conditions. It features a lead free copper alloy body with NPT male inlet and NPT female outlet connections, a unique thermostat with special thermo-bonded coating with 4 inch extension, and test lever. The temperature relief is 210 degrees F (99 degrees C) and the pressure relief is set at 175 psi. ASME rated and CSA listed
Cast bronze body - Stainless steel spring - 8 inch long element - 210 degree maximum temperature
200,000 BTU/hr relief - 600# WOG (non-shock) - 1/4 turn operation - Full port - Adjustable packing - Blow out proof stem - Integral hose end drain valve - Integral relief valve port - 3421LAB hot valve with long body (red handle) - 3422AB cold valve (blue handle)
Factory set at 15 PSIG - 250 degree maximum temperature
Series 740 Boiler Pressure Relief Valves are used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. They have an iron body construction with expanded outlet drain connections for hot water space heating boilers, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 740 offers large discharge capacity, resists corrosive water conditions, resists sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control. Iron body with expanded outlets. Non-mechanical seat-to-disc alignment will not stick or freeze. Seat is located above drain to prevent water from being trapped and sediment from fouling the seat
Boshart Industries relief valves are recommended for all cold water system installations to protect against damage to piping and pressure tanks. Field adjustments are not recommended for these relief valves. Any changes made to the pre-set pressure is entirely at the risk of the person(s)/company who make the adjustment. Relief valves must be installed so that they drain to a floor drain, sump or other safe location with an air break. If an outlet pipe is used then it must be at least the same diameter as the relief valve outlet.
Boshart Industries Relief Valve, Lead Free Standard, Series: RVNB-NL Series, 3/4 x 1/2 in Nominal, MNPT x FNPT End Style, 100 psi Pressure, Up to 140 deg F, Media: Cold Water, Spring Actuator, Brass Body, NBR/304 Stainless Steel/Brass Trim, 1.44 in L x 1.02 in W x 2.45 in H, Import
Series 740 Boiler Pressure Relief Valves are used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. They have an iron body construction with expanded outlet drain connections for hot water space heating boilers, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 740 offers large discharge capacity, resists corrosive water conditions, resists sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control. Iron body with expanded outlets. Non-mechanical seat-to-disc alignment will not stick or freeze. Seat is located above drain to prevent water from being trapped and sediment from fouling the seat
This 1/2 inch lead free vacuum relief valve is suitable for low pressure steam and water service, and is ideal for use in domestic water heaters and supply tanks. This valve automatically allows air to enter into the piping system to prevent vacuum conditions that could siphon water from the system and damage water equipment. It consists of a lead free brass body construction with NPT male inlet connection, and a protective cap. Maximum working pressure is 200 psi.
Series 174A Boiler Pressure Relief Valves are used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. They have a bronze body construction with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 174A resists corrosive water conditions sticking, and freezing, and it prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control.
Series 335 ASME rated Boiler Pressure Relief Valves were developed to fill the hydronic industry's need for a smaller valve for OEM use on popular size boilers up to 510,000 BTU at 30psi. The compact design, all bronze construction, and modern appearance make them an ideal choice for a wide variety of smaller size OEM boilers. ASME Section IV at 30 PSI set point. Silicone disc is highly heat-resistant. Bronze body with bronze seat and stainless steel spring.
This 3/4 inch lead free temperature and pressure relief valve is designed to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters up to 105,000 BTU/hr. This two-in-one relief valve provides a proven and cost effective means to protect against excessive temperature and pressure emergency conditions. It features a lead free copper alloy body with NPT male inlet and NPT female outlet connections, a unique thermostat with special thermo-bonded coating with 4 inch extension, and test lever. The temperature relief is 210 degrees F (99 degrees C) and the pressure relief is set at 150 psi. ASME rated and CSA listed
This 3/4 inch lead free bronze automatic reseating temperature and pressure relief valve with an 5 inch thermostat is installed directly in tank tappings and is used in commercial applications to provide automatic temperature and pressure protection for hot water supply tanks and hot water heaters. It features a lead free bronze body with NPT male inlet and NPT female outlet connections, thermo-bonded coated thermostat, tamper resistant bonnet screws, automatic reseating feature, and test lever. The temperature relief is 210 degrees F and the pressure relief is 150 psi. Non-mechanical seat to disc alignment
Cast bronze body - Stainless steel spring - 7-1/2 inch long element - 210 degree maximum temperature
Series 374A Boiler Pressure Relief Valves are used in hot water boiler applications to protect against excessive pressure on all types of hot water heating boiler equipment. They have an iron body construction with forged bronze inlet connections, non-metallic disc-to-metal seating stainless steel spring, and test lever. Series 374A resists corrosive water conditions, sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control.
This 3/4 inch lead free bronze automatic reseating temperature and pressure relief valve with an 8 inch thermostat is installed directly in tank tappings and is used in commercial applications to provide automatic temperature and pressure protection for hot water supply tanks and hot water heaters. It features a lead free bronze body with NPT male inlet and NPT female outlet connections, thermo-bonded coated thermostat, tamper resistant bonnet screws, automatic reseating feature, and test lever. The temperature relief is 210 degrees F and the pressure relief is 150 psi. Non-mechanical seat to disc alignment. Thermostat is accurate and proven
Series 740 Boiler Pressure Relief Valves are used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. They have an iron body construction with expanded outlet drain connections for hot water space heating boilers, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 740 offers large discharge capacity, resists corrosive water conditions, resists sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control. Iron body with expanded outlets. Non-mechanical seat-to-disc alignment will not stick or freeze. Seat is located above drain to prevent water from being trapped and sediment from fouling the seat
Series 335 ASME rated Boiler Pressure Relief Valves were developed to fill the hydronic industry's need for a smaller valve for OEM use on popular size boilers up to 510,000 BTU at 30psi. The compact design, all bronze construction, and modern appearance make them an ideal choice for a wide variety of smaller size OEM boilers. ASME Section IV at 30 PSI set point. Silicone disc is highly heat-resistant. Bronze body with bronze seat and stainless steel spring.
Adjustable from 50 PSI to 175 PSI - Maximum 300 PSI - Series 530C Calibrated Pressure Relief Valves are used in commercial, residential and industrial applications to protect against excessive pressure in systems containing water, oil, or air. They have a bronze body construction with NPT threaded male inlet and NPT threaded female (drain) outlet connections, stainless steel spring, brass bonnet, Buna-N disc, and Buna-N O-ring. Series 530C has a calibrated adjustment feature for setting the valve to the required relief pressure, and is ideal for by-pass thermal expansion pressure relief (not ASME approved).
This pressure relief valve is used in hot water heating and domestic supply boiler applications to protect against excessive pressures on all types of hot water heating supply boiler equipment. It consists of a bronze body construction with NPT threaded male inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. M474A resists corrosive water conditions, sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control. Pressure is set at 125 psi
Factory set at 15 PSIG - 250 degree maximum temperature
This 1 inch bronze automatic reseating temperature and pressure relief valve with a 7 inch thermostat is installed directly in tank tappings and is used in commercial applications to provide automatic temperature and pressure protection for hot water supply tanks and hot water heaters. It features a bronze body with NPT male inlet and NPT female outlet connections, thermo-bonded coated thermostat tamper resistant bonnet screws, automatic reseating feature, Non-mechanical seat to disc alignment, and test lever. The temperature relief is 210 degrees (99 degrees C) and the pressure relief is 150 psi.
Series 740 Boiler Pressure Relief Valves are used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. They have an iron body construction with expanded outlet drain connections for hot water space heating boilers, non-metallic disc-to-metal seating, stainless steel spring, and test lever. Series 740 offers large discharge capacity, resists corrosive water conditions, resists sticking and freezing, and prevents water and sediment from being trapped in the seat. It is designed for emergency safety relief and shall not be used as an operating control. Iron body with expanded outlets. Non-mechanical seat-to-disc alignment will not stick or freeze. Seat is located above drain to prevent water from being trapped and sediment from fouling the seat