the ASD series provides the reliability required to stabilize the chemical balance of the refrigerant oil and prevent premature component failure

Flexible Installation: Self-centering shaft adapter and reversible mounting simplify alignment with fire and smoke dampers

facilitating easier compressor restarts even in high-static conditions

maintaining identical RPM and mounting footprints

York S1-129201 Expansion Valve 318820-201 the ASD series provides theThe York S1 129201 Expansion Valve is a critical precision metering device designed for high efficiency refrigerant flow control in residential and light commercial HVAC systems. This thermostatic expansion valve (TXV) utilizes a 1 2" inlet, 7 8" outlet, and 1 4" external equalizer connection to maintain optimal superheat across the evaporator coil, preventing liquid slugging and protecting the compressor. Featuring a 5 foot long capillary tube and a