you must replace the valve and seat as a matched set

In what position should I mount this air pressure switch

The MARS 61431 Contactor is a professional-grade 3-pole definite purpose contactor engineered for high-demand HVACR applications

5 Cv rating minimizes pressure drop across the 1" sweat valve body

this limit switch monitors heat exchanger temperatures to prevent thermal runaway

Emerson Alco 060854 Expansion Valve Refrigerant you must replace the valveThe Emerson Alco 060854, specifically the TCLE 12 HC series, is an externally equalized thermal expansion valve designed for high capacity R22 refrigeration systems. This 12 ton capacity valve utilizes a medium temperature charge (Code C), making it essential for walk in coolers and commercial HVAC applications requiring precise superheat control. Featuring a 5 foot capillary tube and an SAE external equalizer connection, this take apart expansion