Spirax-Sarco 54663 Main Valve 30067439-890 engineered replacement for legacy part

engineered replacement for legacy part numbers RLY2105 and RLY2105K

Field Ready: Includes a 36-inch capillary and 1/4" flare connection for fast installation on standard refrigeration pressure switches

providing reliable service for freestanding radiators

The Armstrong 2011 series utilizes a free-floating guided lever mechanism to ensure tight shut-off

Features non-metallic disc-to-metal seating for reliable

Spirax-Sarco 54663 Main Valve 30067439-890 engineered replacement for legacy partThe Spirax Sarco 54663 is a 4 inch ANSI 125 flanged main valve engineered for precision in high capacity steam distribution systems. As a core component of the 25 Series, this pilot operated pressure reducing valve (PRV) utilizes a self actuated design, leveraging downstream pressure feedback via an external sensing line to modulate flow. This cast iron unit is built for heavy duty service, featuring stainless steel internals and a fatigue tested