York S1-025-41178-000 Expansion Valve 30067439-890 An unrestricted main line provides

An unrestricted main line provides more air than the thermostat can bleed off

making it a staple for HVAC gas leak detection

the 8402-067BX is the official updated version of the 8402-067

and unauthorized setpoint adjustment

York S1-025-41178-000 Expansion Valve 30067439-890 An unrestricted main line providesThe York S1 025 41178 000 Expansion Valve is a critical OEM replacement component engineered for 3 ton residential and light commercial condensing units. This thermostatic expansion valve (TXV) is specifically calibrated for R 22 refrigerant, utilizing a 3 8" x 3 8" connection size to ensure precise metering and optimal superheat control. For contractors managing R 22 legacy systems, this valve provides the exact pressure drop required to maintain