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the MTZ32-4VI includes an internal overload protector and a 3/8" NPT oil equalization port
this OEM replacement part is suitable for both new installations and routine maintenance
How do I test the defrost sequence on this board
Measuring 20" wide by 12" high
Trane VAL9891 TXV 318518-761 the MTZ32-4VI includes an internalThe Trane VAL09891 is a 3 ton thermostatic expansion valve engineered specifically for R 22 refrigerant systems. This TXV features a non adjustable, balanced port design that ensures precise superheat control across varying head pressures, preventing evaporator floodback and protecting reciprocating or scroll compressors. It utilizes a mechanical pressure sensing mechanism with an external equalizer to compensate for pressure drops across the coil.
