Trane VAL7234 TXV Refrigerant the 100166256 is the current

the 100166256 is the current manufacturer-designated replacement for the PRS3406 and PRS2406

Precision Refrigerant Control: High-tolerance internal slide prevents bypass leaks

maintaining stable head pressure across varying load conditions

The "C" suffix typically denotes a commercial packaging variant or bulk-certified model

it accommodates the 3/4" NPT threads found on most standard probes

Trane VAL7234 TXV Refrigerant the 100166256 is the currentThe Trane VAL7234 is an OEM 40 ton thermostatic expansion valve engineered for precision refrigerant metering in high capacity R22 HVAC systems. Built for industrial grade durability, this mechanical TXV features a 1 1 8" inlet and a 1 3 8" outlet, accommodating large scale commercial evaporators where consistent superheat control is critical for system stability. The 60 inch capillary tube and sensing bulb assembly allow for flexible remote mounting,