this SPST (Single Pole Single Throw) momentary switch serves as a primary safety cut-off

Durable Construction: Built to withstand the extreme thermal cycling of commercial and residential heating stages

The Wayne 21854 features a 1/2 inch bore (shaft size)

this manual reset sensor is a high-limit safety device that opens the SPST (Single Pole Single Throw) circuit if it detects excessive heat or flame spillage outside the heat exchanger

1-Pole Configuration: Built with a single switched pole and a permanent shunt to support continuous power requirements for auxiliary components

ASCO 302-183 Rebuild Kit Els PW 17895 this SPST (Single Pole SingleThe ASCO 302 183 Rebuild Kit is a comprehensive diagnostic and repair solution designed for the 8320 series 3 way solenoid valves. As a veteran grade service kit, it provides the essential internal components required to restore factory spec pressure ratings and bubble tight shutoff in high cycle HVACR and industrial pneumatic applications. This kit is specifically engineered for AC powered solenoid valves and includes a precision machined core