The inclusion of SPDT relay contacts allows for seamless liquid line solenoid integration and remote alarm signaling

The unit incorporates a high-flow magnet head and a three-position gas cock (Off-Pilot-On) for standard safety sequencing

this HVAC sequencing relay features a single pole single throw normally open configuration

When you're spec'ing out a hydronic system

This OEM Goodman replacement part functions as a normally open atmospheric pressure sensor

Spirax-Sarco 55227 Main Valve R-410A The inclusion of SPDT relayThe Spirax Sarco 55227 is a 2 inch NPT 25 Series main valve designed for high performance steam pressure and temperature regulation. This pilot operated steam pressure reducing valve (PRV) features a durable cast iron body and stainless steel internals to resist corrosion and wire drawing in demanding industrial environments. As a self actuated unit, it utilizes downstream pressure feedback through an external sensing line to provide accurate, stable