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Refrigeration service valve positions.
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The valve is back seated when the stem is turned all the way out counterclockwise.
When opening a service valve make sure it is secured by placing it in a vise or attaching it to the compressor.
Three way service valve positions.
Include access fitting located on tube extension.
Valve may be installed in any position.
A hose is then connected from the transfer unit compressor discharge valve to an external storage cylinder.
Valves with access fittings also available.
Compressor multi position service valves.
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.
Seal cap design provides valve operation without removal of seal cap.
Service valves can be set to three different positions figure 3.
Full refrigeration service temperature range of 40 f to 325 f.
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In this position the service port is closed but the middle port is open to the line port figure 25 9.
Also look to see if the service valve has a packing gland nut.
Service valves should al.
This position is called back seated because the valve is seated on the back port of the valve.
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.
Service valve 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.
Service valves can be set to three different positions figure 3.
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The packing gland nut helps to ensure a leak free seal.
Full size ports for unrestricted flow non directional.