Relief Valves 52
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.
This lead free boiler 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's body is lead free with NPT threaded female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It 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, not as an operating control. The pressure setting is 75 psi
This boiler pressure relief valve is used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. It consists of 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. It 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, not as an operating control. The pressure relief is set at 50 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
This boiler pressure relief valve is used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. It consists of a 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. Pressure Range: 30 to 75psi
This boiler pressure relief valve is used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. It consists of a 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. It 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, not as an operating control. The pressure setting is 40 psi.
This bronze automatic reseating temperature and pressure relief valve with a 1-21/32 inch extended shank and 3 inch thermostat is installed directly in tank tapings and 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, and test lever. The temperature relief is 210 degrees (99 degrees C) and the pressure relief is 150 psi.
This boiler 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 female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It 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, not as an operating control. The pressure relief is set at 45 psi
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 extended shank to accommodated up to 2 IN of insulation, NPT male inlet and NPT female outlet connections, a unique thermostat with special thermo-bonded coating, stainless steel spring, and test lever. The temperature relief is 210 degrees F (99 degrees C) and the pressure relief is set at 150 psi
This boiler 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 female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It 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, not as an operating control. The pressure relief is set at 100 psi
This 3/4 inch bronze automatic reseating temperature and pressure relief valve with a 1 21/32 inch extended shank and 3 1/2 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 F (99 degrees C) and the relief pressure is 150 psi.
This 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 15,000 BTU per hour. This two in one relief valve provides the most proven and cost effective means to protect against excessive temperature and pressure emergency conditions. It features a bronze body construction, NPT male inlet and NPT female outlet connections, a unique entended thermostat with special thermo-bonded coating and test lever. The temperature relief is 210 degrees (99 degrees C) and the pressure relief is set at 150 psi
This 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 brass body construction with NPT threaded male inlet and NPT threaded female (drain) outlet, test lever, and stainless steel spring. It is ANSI Z21.22 approved, ASME rated and design certified and listed by CSA. The pressure relief is set at 150 psi
This boiler pressure relief valve is used in hot water space heating boiler applications to protect against excessive pressure on all types of hot water space heating boiler equipment. It consists of 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. It 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, not as an operating control. The pressure relief is set at 75 psi
This dependable, low cost, high capacity safety relief valve is designed for low pressure, steam heating boilers and process equipment used in industrial and commercial applications. It features a bronze body, stainless steel spring, top guided stem, NPT threaded male inlet by threaded female outlet (drain) connection and a non-stick Teflon disc-to-metal seat to assure positive shutoff. The factory pressure setting for saturated steam service is set at 15 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.
This boiler 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 brass body construction with NPT threaded male inlet and NPT threaded female outlet connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It 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, not as an operating control. The standard pressure setting is 75 psi
This 1-1/4 inch dependable, low cost, high capacity safety relief valve is designed for pressure cookers and steam cleaning equipment requirements used in low pressure applications. It features a bronze body, stainless steel spring, top guided stem, NPT threaded male inlet by threaded female outlet (drain) connection and a non-stick Teflon disc-to-metal seat to assure positive shutoff. The factory pressure setting for saturated steam service is set at 15 psi.
This boiler 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 female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It 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, not as an operating control. The pressure relief is set at 100 psi
Series 415 Steam Safety Relief Valves are used in commercial and industrial applications for low-pressure, steam heating boilers and process equipment. They have a bronze body construction with NPT threaded male inlet and threaded female outlet (drain) connection, stainless steel spring, top-guided stem, and non-stick Teflon disc-to-metal seating. ASME Section IV at 15psi
This boiler 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 female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It 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, not as an operating control. The pressure relief is set at 30 psi
This bronze automatic reseating temperature and pressure relief valve with an 8 inch thermostat is installed directly in tank tapings 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, and test lever. The temperature relief is 210 degrees and the pressure relief is 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.
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 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 bronze automatic reseating temperature and pressure relief valve, with a 6 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 female 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 and the pressure relief is 150 psi.
This lead free automatic reseating temperature and pressure relief valve with a 6 inch thermostat is installed directly in tank tapings 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 body with NPT female 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 and the pressure relief is 150 psi.
This lead free boiler 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 lead free 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. It 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, not as an operating control. The pressure setting is 150 psi
Adjustable from 50 PSI to 175 PSI - Maximum 300 PSI - For fire protection systems - This calibrated pressure relief valve is used in commercial, residential and industrial applications to protect against excessive pressure in systems containing water, oil, or air. It consists of 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 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 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 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 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 lead free brass 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 boiler 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 female inlet and NPT threaded female outlet (drain) connections, non-metallic disc-to-metal seating, stainless steel spring, and test lever. It 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, not as an operating control. The pressure relief is set at 40 psi
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 lead free brass 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 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 175 psi
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 extended shank to accommodated up to 2 1/2 IN of insulation, NPT male inlet and NPT female outlet connections, a unique thermostat with special thermo-bonded coating, stainless steel spring, and test lever. The temperature relief is 210 degrees F (99 degrees C) and the pressure relief is set at 150 psi