which is standard for most residential 24V gas valves found in HVAC repair scenarios

the 4183-00 features a rugged brass body and synthetic seating material to ensure a positive shut-off and minimize seat leakage

providing a strong magnetic pull without excessive energy waste

Normally Open relay

Spirax-Sarco 55224 Main Valve Refrigerant which is standard for mostThe 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