Environmental Protection: Hermetically sealed probe design eliminates failures caused by humidity and condensation

the 664435R may be cracked or internally obstructed

It features durable ball bearings and a high insulation class rating to handle the thermal stress of outdoor condenser environments

Is this orifice compatible with Natural Gas systems

Watts 88006672 Valve 320788-703 Environmental Protection: Hermetically sealed probeThe Watts 88006672 Valve is a professional grade temperature and pressure relief valve designed specifically for hot water storage tanks and residential water heaters. This 3 4" NPT M1 series model provides critical over temperature and over pressure protection, featuring a 150 psi pressure relief setting and a 210F temperature relief threshold. With a 105,000 BTU hr capacity, it ensures system safety by automatically discharging water during