Watts 0383308 Valve 30067439-890 this 1/2-inch valve provides the

this 1/2-inch valve provides the precise regulation required to bring the system back to spec

Built-in USB port configuration facilitates rapid cloning of settings between units

leading to overflow

With a ±1% FS accuracy rating

Operating pressure ratings are substantial

Watts 0383308 Valve 30067439-890 this 1/2-inch valve provides theThe Watts 0383308 is a high capacity ASME Section IV pressure relief valve designed specifically for hot water space heating boilers. Engineered as part of the Watts Series 740, this 1 1 4 inch NPT valve is factory set at 45 PSI and delivers a massive discharge capacity of 2,830,000 BTU hr. Its iron body construction features expanded outlet drain connections (1 1 2 inch) to facilitate rapid pressure reduction during thermal expansion or runaway