Trane VAL8087 TXV 321702-401 a dedicated vent line to

a dedicated vent line to the outdoors is generally not required for indoor installations

Excessive heat during the sweat connection process can damage internal seals and the diaphragm

While often recommended for easier maintenance

which safeguard the motor against thermal stress and excessive discharge pressures during extreme high-ambient operation

Periodic inspection of the internal mechanism and flushing the unit can restore proper function

Trane VAL8087 TXV 321702-401 a dedicated vent line toThe Trane VAL8087 TXV is a heavy duty, field replaceable thermostatic expansion valve engineered for precision refrigerant metering in 4 ton R410A cooling systems. Designed with 1 2" x 1 2" ODF solder connections, this valve ensures secure, leak proof integration into the liquid line and evaporator inlet. The inclusion of a 30 inch capillary tube and a high sensitivity remote sensing bulb allows for real time adjustments to evaporator superheat,