Normally Open relay

including models 3EW1

Does this module support both heating and cooling modes

Chemical Resistance: Equipped with NBR (Buna-N) seals for excellent compatibility with air and fuel gasses

Spirax-Sarco 55224 Main Valve Refrigerant Normally Open relayThe Spirax Sarco 55224 is a 1 inch NPT cast iron main valve engineered for precision high capacity steam regulation in industrial environments. Built as the cornerstone of the Spirax Sarco 25 series, this pilot operated pressure regulator provides exceptional stability and dead end shutoff (ANSI Class IV) across varying upstream pressures. As a seasoned technician knows, the versatility of the 55224 main valve lies in its modularitysimply pair it with