Watts Pressure Relief Valve

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 (2.11 bar). 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.

• Non-mechanical seat to disk alignment will not stick or freeze.
• Seat located above drain; water can't be trapped and sediment can not foul seat.
• Water seal of high temperature resisting material isolated spring working parts from water during relief.