This specific model provides a capacity of 3

Drop-In Compatibility: Exact dimensional match for old part numbers 1188517

providing a seamless field-service solution for HVAC furnace repair

Precise Flow Control: The equal percentage flow characteristic in the A-port prevents hunting and improves heat exchanger efficiency

ensuring environmentally responsible field testing

York S1-129334 Expansion Valve 318820-201 This specific model provides aThe York S1 129334 is a professional grade thermostatic expansion valve (TXV) designed for precision refrigerant metering in residential and light commercial evaporator coils. Featuring 5 8" x 7 8" ODF solder connections, this valve ensures a leak free, high integrity joint critical for high pressure systems. As the direct replacement for S1 526 36290 000, it maintains factory spec superheat levels, protecting the compressor from liquid slugging while