Watts 0358553 Valve Els PW 17895 The York S1-025-27727-001 is a

The York S1-025-27727-001 is a critical HVAC replacement limit switch designed for precision thermal monitoring in residential and commercial climate control systems

Key Benefits: Ensures seamless conversion for 3/8-inch stem valves to standard 1/2-20 actuator threads

the X26300 series is the standard replacement for Alco’s take-apart HFK and HF valve bodies

Common Questions What causes this switch to trip at 325 PSI

Energy Efficient: Low resistance design minimizes power loss while maintaining stable performance in power panelboards

Watts 0358553 Valve Els PW 17895 The York S1-025-27727-001 is aThe Watts 0358553 (Model 374A 3 4 30) is a high capacity boiler pressure relief valve engineered specifically for hot water space heating boilers. This critical safety component provides overpressure protection with a fixed 30 psi pressure relief setting and a discharge capacity of 550,000 BTU hr. Designed for professional hydronic heating systems, it features a durable iron body construction and a forged bronze inlet to withstand demanding contractor