This is a stem-mount gauge with a center back connection

Integrated Junction Box: Protects terminal connections and simplifies 120V line-side wiring

internal evaporator coil blockages

Ensuring reliable switching in industrial and commercial HVAC systems

draw excessive amps

Weil McLain 635-100-022 Valve R-410A This is a stem-mount gaugeThe Weil McLain 635 100 022 3 way valve body is a professional grade replacement engineered specifically for the Weil McLain CGt Series 1 and 2 residential gas boilers. Designed to replace the VCZMS6100 U, this brass 3 port valve body is critical for maintaining precise boiler water flow control and ensuring thermal balance within hydronic heating systems. As a direct fit HVAC replacement part, it integrates seamlessly with your existing Weil McLain