Refrigeration King Valve Positions

Back seated all the way out fully counter clockwise this position provides full operational flow through the valve body but is closed to the access port. If the valve stem is all the way in the valve is considered to be in the front seated. Check out a demo of housecall pro here.

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Refrigeration king valve positions.

My paperback ebook. Service valves can be set to three different positions figure 3. Additional information in the appendices provide ce declaration of conformity and safety guide. The king valve is unique in its position because it allows you to pump down a system by closing it and running the compressor until all or most refrigerant is pumped out of the low side of the system and into the condenser and receiver.

The gauge port is closed and the valve is open allowing refrigerant to flow through the system. This catalog provides product data sheets of herl valves and components operating instructions how to order information and contact addresses. 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. This position is called front seated because the valve is seated on the front port of the valve.

It is also commonly referred to as a liquid. Full size ports for unrestricted flow non directional. When referring to the king valve most air conditioning technicians are referring to the valve which is found downstream from a liquid line receiver. In this position the line port is closed but the middle port is open to the service port figure 25 10.

These types of valves have no schrader port so there will be no pressure on the port when the valve stem is back seated. There are three positions in which the valve can be oriented. The valve is front seated when the stem is turned all the way in clockwise. In the video andrew describes the following positions.

Valve may be installed in any position full refrigeration service temperature range of 40 f to 325 f valves with access fittings also available. The front seat position can be used to isolate refrigeration system. If the valve stem is all the way out the valve is considered to be in the back seated position.