Weil McLain 511-624-404 Pressure Switch Els PW 17895 meaning both power legs are

meaning both power legs are disconnected when the coil is de-energized

Can I use this for ammonia systems

While it includes ceramic wire nuts for adaptation

Can the Robertshaw 11-195 be used for refrigerant lines

It functions primarily as an inductor to suppress high-frequency noise and regulate current flow

Weil McLain 511-624-404 Pressure Switch Els PW 17895 meaning both power legs areThe Weil McLain 511 624 404 Pressure Switch is a critical safety component engineered for CGS Series Boilers (Size 6), providing precise monitoring of combustion air and flue gas pressures. Operating with a 0. 95" W. C. set point, this differential air pressure switch is calibrated for standard elevations from 0 to 1,999 feet. As an OEM replacement part, it ensures the boiler's induction blower provides sufficient airflow before allowing the ignition