Watts 0342691 Relief Valve The blow-out proof stem and

The blow-out proof stem and adjustable packing gland provide necessary safety and maintenance flexibility for technicians on the job site

" where the burners shut off prematurely while the blower continues to run

Its rugged construction facilitates more accurate flame sensing and longer service life compared to standard residential alternatives

features a 3/8-inch outer diameter (OD) rod construction to ensure structural rigidity under hydraulic pressure

The manual reset feature is essential for diagnostic purposes

Watts 0342691 Relief Valve The blow-out proof stem andThe Watts 0342691 (Model 335M2) is a high capacity boiler pressure relief valve engineered for hydronic heating systems and low pressure steam applications. Featuring a 3 4" female NPT inlet and 3 4" female NPT outlet, this ASME Section IV rated safety valve is factory set to 30 PSI, providing critical overpressure protection for residential and light commercial boilers. With a steam discharge capacity of 510,000 BTU hr, it serves as the direct