ASME Pressure Relief Valves
Hot water boiler systems are designed to operate safely at temperatures higher than the atmospheric boiling temperature of water, but at relatively low pressures. Watts ASME rated pressure relief valves protect against excessive pressure conditions only.
Watts offers one of the most advanced designs of ASME rated water pressure relief protection for hot water boilers. Watts valves feature high accuracy and a tight seal by utilizing nonmetallic disc-to-metal seating. Watts ASME rated pressure relief valves meet all performance requirements of the ASME Low pressure Heating Boiler Code. Watts valves also feature the first ever nonmechanically guided stick-resistant design.
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174A
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Boiler Pressure Relief Valves
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Size(s) :
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3/4 to 2 in. (20 to 50mm)
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Description:
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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.
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740
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Boiler Pressure Relief Valves
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Size(s) :
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3/4 to 2 in. (20 to 50mm)
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Description:
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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. 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 (2 to 5 bar) with corresponding high ratings from 925,000 to 10,700,000 BTU/hr.
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374A
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Boiler Pressure Relief Valves
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Size(s) :
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3/4 in. (20mm)
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Description:
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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. It consists of 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. 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 at 550,000 BTU/hr.
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DateTuesday 05 Jun 2007
