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Standard maintenance protocols generally require an oil filter change during the annual inspection or if the oil filter pressure drop exceeds the manufacturer's specified delta-P threshold
Robust Construction: Solid copper connections and an epoxy-coated shell offer superior corrosion resistance for long-term field use
Precision Balanced Hub: Features a fixed 1/2" bore that minimizes centrifugal runout
Common Questions Is the 22-120 compatible with my older Barber Colman setup
Professional-grade dual EPDM stem seals and graphite-reinforced PTFE seats provide a leak-free life expectancy of over 200
Watts 0346040 Relief Valve 323613-751 Standard maintenance protocols generally requireThe Watts 0346040 (Series 174A) is a high capacity ASME Section IV boiler pressure relief valve designed for commercial and industrial hot water heating applications. Featuring a 3 4 inch NPT inlet and outlet, this valve is factory set to a 10 PSI relief pressure, providing critical overpressure protection for hot water boilers and storage tanks. The bronze body construction and non metallic seat to disc design ensure long term durability and prevent