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 standard pressure setting is 30 psi, pressure range in 5 psi increments from 30 to 150 psi with corresponding high ratings from 650000 to 14370000 Btu/hr.

• Automatic reseating
• Spring loaded
• Non-mechanical seat to disc alignment will not stick or freeze
• Seat located above drain, water can't be trapped and sediment can't foul seat
• Water seal of high temperature resisting material isolates spring working parts from water during relief

Standards/Certifications: ASME section IV, HV, NB, ISO 9001 standard

Applications: For hot water boiler applications

• Installation Sheet https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS289_Instal.pdf
• Specification Sheet https://www.plumbers-supply-co.com//ASSETS/DOCUMENTS/ITEMS/EN/UNI-PS289_Spec.pdf