ensure the sensitivity adjusting screw is calibrated to the specific flow requirements of the application to prevent short-cycling or delayed response times

Tamper Resistance: Setpoint sliders are compatible with locking stops (HFO-0027) to maintain facility-wide energy standards

Direct Replacement: Eliminates the need for mounting bracket modifications in systems using part 20165703 or 20165703S

Proper 240V to 24V transformer integration is critical for preventing control board failure and ensuring responsive relay activation during peak cycles

Direct OEM replacement ensures proper fitment and terminal alignment

York S1-025-41017-000 Expansion Valve 30067439-890 ensure the sensitivity adjusting screwThe York S1 025 41017 000 is an OEM grade refrigerant metering device designed specifically for evaporator coils in legacy R22 HVAC systems. As a critical Thermostatic Expansion Valve (TXV), it maintains precise superheat by regulating the flow of liquid refrigerant into the evaporator, preventing compressor slugging while maximizing cooling capacity. This valve features standard 3 8" ODF inlet and 3 8" ODF outlet sweat connections, allowing for a