this Penn A421 electronic control provides advanced features like anti-short cycle delay and sensor offset to protect compressors and optimize system cycling

5°F to 40°F differential provides precise control over compressor cutout points to maximize efficiency

2 1/2" ASME Four Hole Flange

it is a clear indicator of a restriction

maintaining exact discharge temperatures between 110-170°F

Trane VAL19951 TXV 321042-401 this Penn A421 electronic controlThe Trane VAL19951 is a commercial grade 6 ton R410A TXV engineered for precise refrigerant metering in high capacity cooling systems. This thermostatic expansion valve features a 3 8" x 1 2" connection size with ODF solder fittings, ensuring a secure, leak free integration into the liquid line. Designed specifically for R410A refrigerant, it maintains the ideal superheat balance across the evaporator coil to prevent liquid slugging and protect the