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WATTS® Regulator Series 335 ASME-rated boiler pressure relief valves were developed to fill the OEM need of the hydronic industry for a smaller valve on popular size boilers up to 510000 Btu at 30 psi. 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.
WATTS® M335-M2 Series 342692 Pressure Safety Relief Valve, 3/4 in, MNPT x FNPT, 30 psi, Brass