The Lennox 10F31 (103893-01) Restrictor Assembly is a factory-original component engineered to manage refrigerant flow in air conditioning and heat pump systems. By controlling the pressure drop between the liquid and evaporator sections, it ensures balanced system performance, enhanced efficiency, and protection against compressor damage due to flooding or icing.Key Features & Specifications:
- OEM Part Numbers: 10F31 / 103893-01
- Type: Fixed-bore restrictor assembly
- Function: Controls and restricts refrigerant flow for pressure regulation
- Material: Corrosion-resistant brass and copper components
- Inlet/Outlet Connection: Typically 3/8" OD inlet x 1/4" OD outlet (verify specific model compatibility)
- Application: Suitable for Lennox split-system air conditioners and heat pumps
- System Compatibility: Designed for use in units utilizing R-410A or R-22 refrigerants (check unit specs)
- Operating Temperature Range: -40°F to 160°F
- Installation: Inline, brazed connection within the liquid line circuit
- Usage: Commonly used in systems not utilizing a thermostatic expansion valve (TXV)