making it a versatile tool for HVACR troubleshooting

The 78L19 is the current replacement and is technically identical to the 78L1901 part number

While it is an SPST open on pressure drop switch

contractors can achieve consistent lock-up and precise regulation

and setpoint status

York 025-32905-000 Expansion Valve Freon making it a versatile toolThe York 025 32905 000 Expansion Valve is a critical metering component designed for high tonnage R 22 HVAC systems, common in legacy York chillers and large commercial air handlers. As a genuine OEM thermostatic expansion valve (TXV), it regulates refrigerant flow into the evaporator coil by maintaining a constant superheat, preventing liquid slugging and ensuring optimal heat exchange efficiency. This externally equalized valve is engineered to