Spirax-Sarco 55224 Main Valve 30067439-890 Precise Thermal Control: Features an

Precise Thermal Control: Features an adjustable fan limit setting to optimize blower cycles and improve system efficiency

Specifically designed for use with Maxitrol 210D and 325-7A series regulators

It is rated for 30 Amps at 277 VAC and 20 Amps at 28 VDC

Precision Bias Tuning: Mechanical bias adjustment provides ± 5 psig offset to compensate for line loss or specific sequence requirements

High-Visibility Monitoring: The 2-1/2" face offers a clear readout for remote pneumatic transmitter signals

Spirax-Sarco 55224 Main Valve 30067439-890 Precise Thermal Control: Features anThe 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