Refrigeration Service Valve Positions

Full size ports for unrestricted flow non directional.

Refrigeration service valve positions. Seal cap design provides valve operation without removal of seal cap. There are over 235 refrigeration careers in houston tx waiting for you to apply. 6 57 a hose is connected to the low side access point compressor suction valve through a filter drier to the transfer unit compressor suction valve. The packing gland nut helps to ensure a leak free seal.

Service valves should al. Include access fitting located on tube extension. The low stress way to find your next refrigeration job opportunity is on simplyhired. 235 refrigeration jobs available in houston tx.

This position is called back seated because the valve is seated on the back port of the valve. Valve may be installed in any position. A hose is then connected from the transfer unit compressor discharge valve to an external storage cylinder. The valve is back seated when the stem is turned all the way out counterclockwise.

Full refrigeration service temperature range of 40 f to 325 f. Also look to see if the service valve has a packing gland nut. Many residential techs get confused when they see these multi position valves in larger equipment and andrew does a great job of demonstrating the basics in this video. Front seated position the valve stem is turned fully clockwise to effectively stop the flow of refrigerant vapour from the suction line union on the low pressure side of the compressor and to the discharge line union on the high pressure side of the compressor.

It is typically made of brass and is found at the base of the valve stem. Compressor multi position service valves. Service valves can be set to three different positions figure 3. In this position the service port is closed but the middle port is open to the line port figure 25 9.

Valves with access fittings also available. Three way service valve positions. Service valves can be set to three different positions figure 3. When opening a service valve make sure it is secured by placing it in a vise or attaching it to the compressor.