25-inch NPT connection and a 1/2-inch orifice

maintaining a tight seal at the flue aperture is non-negotiable for preventing exhaust leaks and optimizing draft performance

The universal mounting bracket aligns with existing hole patterns

this compressor control board is engineered to manage the reversing valve and compressor cycles found in heat pump applications

A clockwise (CW) rotation ensures correct airflow direction

Trane VAL2378 TXV 340793-762 25-inch NPT connection and aThe Trane VAL2378 TXV is a critical OEM thermostatic expansion valve engineered for R 22 refrigerant systems with a 5 ton nominal capacity. This straight through configuration features a 1 2 inch inlet and a 7 8 inch outlet, providing precise superheat control to prevent liquid slugging and ensure optimal evaporator coil performance. As a veteran grade refrigerant metering device, the VAL2378 includes a 5 foot capillary tube for flexible remote bulb