Trane VAL12873 Compressor Service Valve – 3-1/8" 2-Way Angle Type, Cast Iron, Welded, Replaces VAL07370

VAL12873 is a Trane original factory service valve for compressors. It is a 3-1/8 inch two-way angle type with a cast iron valve body and welded connections. It replaces the old part number VAL07370. It is installed on the suction and discharge sides of RTHD and other water-cooled screw unit compressors. The valve stem switches between the front seat, rear seat, and middle position to control the refrigerant path and connect an external pressure gauge. During maintenance, there is no need to recover the entire machine's refrigerant, and the test pressure, vacuum pumping, and component replacement can be completed, shortening the downtime. The structure is compact and the seal is reliable. It is suitable for maintenance isolation of central air conditioning units. Before welding, cooling protection must be done to avoid damaging the internal seals of the valve. After installation, leakage detection and verification of each valve position action should be conducted.