this model is specifically optimized for R404A/R507

Maintains factory-certified performance standards for industrial steam regulators

22-pitch CCW blade with a 1/2" bore

particularly in systems utilizing high-efficiency air handlers or evaporator coils

A lockable 3-button touchpad prevents unauthorized setpoint changes

Trane VAL8643 TXV Valve 328140-751 this model is specifically optimizedThe Trane VAL8643 TXV Valve is a precision engineered thermostatic expansion valve designed for specific 2 ton high efficiency R 410A cooling systems. This OEM replacement part utilizes a 5 16" ODF inlet and a 1 2" ODF outlet to ensure a hermetic seal within the refrigerant circuit. Primarily utilized in Trane and American Standard air handlers and evaporator coils, this valve maintains the optimal superheat required to prevent liquid slugging while