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
Relief Valves 52
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 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
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 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.
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
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
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
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 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
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 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 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 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
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
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 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.
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
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 has a 1 1/4 inch NPTF female inlet, 1 1/2 inch NPTF female outlet, and pressure relief setpoint of 40 psi. The valve can be used for hot water space heating boiler applications to protect against excessive pressure. It features an iron body, non-metallic disc-to-metal seating, and test lever. Includes a nonrestrictive discharge drain line flood sensor with SentryPlus Alert(R) technology to detect excessive water discharges from the relief valve. When paired with an add on connection kit, the sensor is activated to relay alerts for potential flooding events. Connection kit options include BMS, cellular communication, and the Sensor Control Monitor which enables integration with BAS via RS‑485 Modbus or the Nexa platform through Wi-Fi.
WATTS®, F383025, Valve, Series: 740, 1-1/4 x 1-1/2 in Nominal, Female NPTF End Style, 30 psi Pressure, 250 deg F, Media: Water, Iron Body, Non-Metallic Trim, 8-3/4 in H x 4-5/8 in L Dimensions, Domestic
This 2 1/2 to 4 inch relief valve rubber parts kit includes the parts necessary to repair or replace the relief valve rubber parts of series 957, reduced pressure zone assembly, or reduced pressure detector assembly, series 957RPDA. This kit consists of all rubber parts necessary to repair the relief valve of the applicable valve. All parts are genuine and original to the valve.
WATTS® Relief Valve Parts Kit, For Use With: Model 957/957N/957Z 2-1/2 to 10 in Reduced Pressure Zone Assembly, Rubber
This kit contains replacement rubber parts for the repair of the first and second 1 1/4 to 2 inch backflow preventer check valves. This kit consists of all rubber parts necessary to repair the applicable backflow preventer assembly. All parts are genuine and original to the valve.
WATTS®, 0794065, Parts Kit, Series: RK-LF909, For Use With: Model 009/LF009 1-1/4 to 2 in Reduced Pressure Zone Assembly, Rubber
This lead free automatic reseating temperature and pressure relief valve has a 1 inch NPTF male inlet, 1 inch NPTF female outlet, 3 inch coated extension thermostat, pressure relief setpoint of 150 psi, and temperature relief setpoint of 210 degrees F. The valve can be installed in hot water outlet within the allowable distance from the top of the tank for commercial applications to provide protection for hot water supply tanks and hot water heaters. It features a lead free copper silicon alloy body with extended shank, tamper resistant bonnet screws, and test lever. Includes a nonrestrictive discharge drain line flood sensor with SentryPlus Alert(R) technology to detect excessive water discharges from the relief valve. When paired with an add on connection kit, the sensor is activated to relay alerts for potential flooding events. Connection kit options include BMS, cellular communication, and the Sensor Control Monitor which enables integration with BAS via RS‑485 Modbus or the Nexa platform through Wi-Fi.
WATTS®, F121431, Valve, Automatic Reseating, Series: LFLL40XL, 1 in Nominal, Male NPTF x Female NPTF End Style, 112 psi Pressure, 210 deg F, 3 in Probe Length, Media: Water, Test Lever Actuator, Copper Silicon Alloy Body, 7.71 in H x 2.81 in W Dimensions, Domestic
This pressure relief valve has a 1 1/2 inch NPTF female inlet, 1 1/4 inch NPTF female outlet, and pressure relief setpoint of 75 psi. The valve can be used for hot water space heating boiler applications to protect against excessive pressure. It features an iron body, non-metallic disc-to-metal seating, and test lever. Includes a nonrestrictive discharge drain line flood sensor with SentryPlus Alert(R) technology to detect excessive water discharges from the relief valve. When paired with an add on connection kit, the sensor is activated to relay alerts for potential flooding events. Connection kit options include BMS, cellular communication, and the Sensor Control Monitor which enables integration with BAS via RS‑485 Modbus or the Nexa platform through Wi-Fi.
WATTS®, F383942, Valve, Series: 740, 1-1/2 x 2 in Nominal, Female NPTF End Style, 56 psi Pressure, 250 deg F, Media: Water, Iron Body, Non-Metallic Trim, 9-1/4 in H x 5-1/4 in L Dimensions
This 3/4 inch 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 forged body with NPT male inlet and NPT female outlet connections, a unique thermostat with special thermo-bonded coating, and test lever. This valve is ASME rated and CSA listed. The temperature relief is 210 degrees F (99 degrees C). The pressure relief is set at 125 psi (8.6 bar).
WATTS®, 0066090, Temperature/Pressure Relief Valve, Self-Closing, Series: 100XL, 3/4 in Nominal, MNPT x FNPT End Style, 125 psi Pressure, 210 deg F, Media: Water, Test Lever Actuator, Brass Body
This pressure relief valve has a 3/4 inch NPTF female inlet and outlet and a 75 psi pressure relief setpoint. The valve can be used for hot water space heating boiler applications to protect against excessive pressure. It features a bronze body, non-metallic disc-to-metal seating, and test lever. Includes a nonrestrictive discharge drain line flood sensor with SentryPlus Alert(R) technology to detect excessive water discharges from the relief valve. Sensor activation requires purchase of an activation kit which can be connected to existing building management systems or the Watts Cellular Gateway.
WATTS®, F274598, Valve, Automatic Reseating, Series: 174A, 3/4 in Nominal, Female NPTF End Style, 56 psi Pressure, 250 deg F, Media: Water, Bronze Body, Non-Metallic Trim, 4-1/2 in H x 2-3/4 in L Dimensions, Domestic
This pressure relief valve has a 1 inch NPTF female inlet and outlet and a 40 psi pressure relief setpoint. The valve can be used for hot water space heating boiler applications to protect against excessive pressure. It features a bronze body, non-metallic disc-to-metal seating, and test lever. Includes a nonrestrictive discharge drain line flood sensor with SentryPlus Alert(R) technology to detect excessive water discharges from the relief valve. Sensor activation requires purchase of an activation kit which can be connected to existing building management systems or the Watts Cellular Gateway.
WATTS®, F275022, Valve, Automatic Reseating, Series: 174A, 1 in Nominal, Female NPTF End Style, 30 psi Pressure, 250 deg F, Media: Water, Bronze Body, Non-Metallic Trim, 5-3/4 in H x 3 in L Dimensions, Domestic
This lead free automatic reseating temperature and pressure relief valve has a 1 inch NPTF female inlet, 1 inch NPTF female outlet, 6 inch coated extension thermostat, pressure relief setpoint of 150 psi, and temperature relief setpoint of 210 degrees F. The valve can be installed in hot water outlet within the allowable distance from the top of the tank for commercial applications to provide protection for hot water supply tanks and hot water heaters. It features a lead free copper silicon alloy body, tamper resistant bonnet screws, and test lever. Includes a nonrestrictive discharge drain line flood sensor with SentryPlus Alert(R) technology to detect excessive water discharges from the relief valve. Sensor activation requires purchase of an activation kit which can be connected to existing building management systems or the Watts Cellular Gateway.
WATTS®, F121457, Valve, Automatic Reseating, Series: LF140, 1 in Nominal, Female NPTF End Style, 112 psi Pressure, 210 deg F, 6 in Probe Length, Media: Water, Test Lever Actuator, Copper Silicon Alloy Body, Stainless Steel Trim, 5-3/4 in H x 3 in W Dimensions, Domestic
This lead free pressure relief valve has a 1 inch NPTF female inlet and outlet and a 125 psi pressure relief setpoint. This valve can be used for hot water space heating boiler applications to protect against excessive pressure. It features a lead free copper silicon alloy body , non-metallic disc-to-metal seating, and test lever. Includes a nonrestrictive discharge drain line flood sensor with SentryPlus Alert(R) technology to detect excessive water discharges from the relief valve. When paired with an add on connection kit, the sensor is activated to relay alerts for potential flooding events. Connection kit options include BMS, cellular communication, and the Sensor Control Monitor which enables integration with BAS via RS‑485 Modbus or the Nexa platform through Wi-Fi.
WATTS®, F121504, Valve, Automatic Reseating, Series: LF174A, 1 in Nominal, Female NPTF End Style, 93 psi Pressure, 250 deg F, Media: Water, Copper Silicon Alloy Body, Non-Metallic Trim, 5-3/4 in H x 3 in L Dimensions
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. 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. Series 174A 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. Standard Pressure Setting: 30psi (206.9 kPa), Pressure Range: In 5psi (34.5 kPa) increments from 30 to 150psi (2 to 10 bar) with corresponding high ratings from 650,000 to 14,370,000 BTU/hr.
WATTS®, 0274612, Pressure Relief Valve, Series: 174A, 3/4 in Nominal, FNPT End Style, 80 psi Pressure, 250 deg F, Media: Water, Bronze Body, 2-3/4 in L x 4-1/2 in H Dimensions
Overview
This 3/4 inch 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 (689.5 kPa) with corresponding high pressure ratings up to 1,695,000 BTU/hr.1,695,000 BTU/hr.
Features
- Spring loaded
- Non mechanical seat-to-disc alignment will not stick or freeze
- Bronze body
- Automatic reseating
This pressure relief valve has a 3/4 inch NPTF female inlet and outlet and a 60 psi pressure relief setpoint. The valve can be used for hot water space heating boiler applications to protect against excessive pressure. It features a bronze body, non-metallic disc-to-metal seating, and test lever. Includes a nonrestrictive discharge drain line flood sensor with SentryPlus Alert(R) technology to detect excessive water discharges from the relief valve. Sensor activation requires purchase of an activation kit which can be connected to existing building management systems or the Watts Cellular Gateway.
WATTS®, F274547, Valve, Automatic Reseating, Series: 174A, 3/4 in Nominal, Female NPTF End Style, 50 psi Pressure, 250 deg F, Media: Water, Bronze Body, Non-Metallic Trim, 4-1/2 in H x 2-3/4 in L Dimensions, Domestic
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 40 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
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 3/4 inch bronze automatic reseating temperature and pressure relief valve with a 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 bronze body with NPT female 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 and the pressure relief is 150 psi.
This 3/4 inch temperature and pressure relief valve is used in water heater and hot water storage tank applications to provide automatic temperature and pressure protection to hot water supply tanks and hot water heaters up to 80,000 BTU/hr. It features a brass body with NPT threaded male inlet and NPT threaded female outlet connections, unique thermostat with special thermo-bonded coating, automatic re-seating stainless steel spring, and a test lever. It is ASME rated and CSA listed. The temperature relief is at 210 degrees F (99 degrees C), and the pressure relief setting is 150 psi
This 3/4 inch bronze automatic reseating temperature and pressure relief valve with a 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 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 pressure relief is 150 psi.
This 1 inch bronze automatic reseating temperature and pressure relief valve with a 3 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, Non-mechanical seat to disc alignment, 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.
This 3/4 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 body construction with 3/4 inch NPT threaded male inlet and 1/2 inch 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 1 inch 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, Non-mechanical seat to disc alignment and test lever. The temperature relief is 210 degrees 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
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