HVAC understand IT all | january 06, 2018 | Categories: King Valve , Queen Valve , organization Valve




You are watching: Where is the king valve located on a refrigeration system

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Tip: The King Valve Location

By Gary McCreadie

There is a typical mistake that ns hear native HVAC and refrigeration technicians. “Hey man, can you front chair the compressor King valve.” it grinds my gears a little, only because the King valve has one distinct address on a system. The recipient outlet is the ONLY ar you will discover a King valve, that’s it! Funny enough, the valve placed on the recipient inlet is named the Queen valve. The Queen valve is much less common but can be offered in conjunction v the King valve to isolation the receiver. Ifa servicevalve is discovered on the discharge line, that is a discharge business valve. If uncovered on the suction line, it is a suction organization valve. The King valve is unique in its position since it permits you come pump down a mechanism by closing it and running the compressor until all, or most refrigerant is pumped out of the short side that the system and into the condenser and also receiver.

Most company valves, nevertheless of their name, have 3 distinct positions. Back seated position, mid seated position and front seated position. A refrigeration business wrench have to be supplied to change these valves. Have actually you ever ran into a valve stem that is rounded? The most typical reason because that this, issomeone many likelyused an adjustable wrench quite than a refrigeration business wrench, ifyou don’t very own one, obtain one….Seriously! Some business valves room equipped with a packing gland which stays clear of the valve assembly from leaking. The packing gland nut should be loosened slightly before adjusting the valve stem. Examine out the video clip below for a an ext detailed explanation.

Click the attach for an ext info on the Yellow Jacket organization wrench and also adapter

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Regardless the the project at hand, once working with refrigerants, be safe. Wear suitable PPE, and also use caution to avoid injury indigenous refrigerant burn and also pressure blow off.

Gary McCreadie

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