Nordyne 663864R 3/4" Low Side Service Valve

The Nordyne 663864R 3/4" Low Side Service Valve is a critical part of HVAC systems. It protects and regulates the passage of the refrigerant to and from the evaporator coil. The main purpose of this device is to open or close due to differences in pressure, allowing easy flow of refrigerants throughout the system. Normally a low side service valve is used with a high-side service valve in order to isolate certain components of the HVAC system for servicing or replacement. This valve enhances system performance, increases energy efficiency and helps to prevent refrigerant leaks which results in a longer life of HVAC equipment.