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Engineered for professional field use
The 24-foot bendable 3/8-inch aluminum probe houses four evenly-spaced
This 1/2" NPT gas control valve (thermostat) operates with a 4" WC (Water Column) manifold setting
It is designed for most 2-pipe and 4-pipe fan coil systems
Watts 0121421 Valve Refrigerant Engineered for professional field useThe Watts 0121421, also identified as the LF40XL 8 150, is an automatic temperature and pressure relief valve engineered for high capacity protection of commercial water heaters and storage tanks. This 3 4 inch NPT threaded valve features a reinforced bronze body and an extended thermostat element for accurate thermal sensing. With a dedicated pressure relief setting of 150 PSI and a temperature relief threshold of 210F, it delivers a massive steam
