specifically engineered for compatibility with the FS4-3RP and FS4-15RP models

Durable Construction: Built to withstand the high-temperature demands of two-pipe steam and hot water cycles

ensuring your York blower motor or condenser fan motor operates at peak efficiency with reduced amp draw

maintaining sensitivity for precise thermal response

this current relay is optimized for HST (High Starting Torque) applications

Honeywell 310648 Seat specifically engineered for compatibility withThe Honeywell 310648 Seat is a critical replacement component engineered specifically for the VP525 Series pneumatic radiator valves. Designed for professional field service, this removable valve seat ensures a bubble tight seal and restores the precision throttling capabilities of your VP525A or VP525C assemblies. The 310648 is functionally identical to the Honeywell 310648 U, providing a direct fit solution for maintaining pneumatic control valve