Accurate HVAC pressure switch calibration is essential for preventing nuisance trips or ignition failure

or erratic LED blinking patterns that persist after a hard system reset

it features high-integrity glass-filled polycarbonate construction and a SPDT switch action for versatile wiring configurations

Integration is streamlined via the auto-mapping feature

Compact round start capacitor design fits standard mounting straps in most Trane and American Standard control boxes

Trane VAL19947 TXV Els PW 29614 Accurate HVAC pressure switch calibrationThe Trane VAL19947 is a precision engineered R410A 3 Ton TXV designed for high performance refrigerant metering in residential and light commercial evaporator coils. This thermostatic expansion valve maintains optimal superheat control, ensuring the evaporator is properly fed under fluctuating load conditions to prevent compressor floodback and maximize system efficiency. Built for high pressure R410A refrigerant systems, it features a 3 8" ODF inlet