Three Way Valve Diagram

Piping set up plays a major role in flow control using this kind of valve.

Three way valve diagram. A different symbology is used in loop diagrams and p ids than that found in fluid power diagrams one more resembling general instrumentation isa valve symbols. Jandyparts diagram links jandy parts diagrams index jandy valve models 1154 and 2875 3 way jandy valves models 4367 4369 4371 2 way jandy never lube valves models 4716 4715 4717 2724 4944 4945 2 and 3 way. Pneumatic circuit valve symbols. The choice of flow pattern or valve ball porting t port vs l port provides specific options.

Two of the main types include 3 way normally closed and 3 way normally open. Let s say that the flow is now coming from the inlet port. Advantages of the 3 way ball valve. The position and flow boxes indicate how the valve functions.

Most valve symbols have three parts see figure 2a below. There s a couple of things to remember though. If the 3 way valve is needed for more complex functions either the 3 way directional control or the 3 way multipurpose valve can be used. As in two way valves if the three way valve selected is less than line size don t forget the fp factor.

The actuators are the mechanisms which cause the valve to shift from one position to another. Three way ball valves simplify gas and fluid flow control. These two valves vary simply by the fact that one has a normally open passageway while the other has a normally closed one. Resize the valve applying the fp factor to find the new cv.

The main advantage of this valve is its economic value as it can both act as a control and shut off valve. The standard manual three way valve is usually installed so that the bottom port c is the common port. Symbol for closed port. Arrows specify the direction of flow in this case in one direction if a line has an arrow at each end then the flow is bi directional or flow in both directions.

Turning the handle 90 degrees diverts the flow to the right port a or to the left port b or turns the flow off. For three way valves used in chilled water hot water summer winter changeover mixing two position or diverting use a line size valve. This is a low d p application. Two square or rectangular blocks specify the valve has two possible positions.

A three way valve has three openings which can act as an inlet and outlets at one time. This post looks at design differences between l pattern and t pattern flow plus how handle position and range of rotation combine with porting to control flow. Three square or rectangular blocks specify the valve has three possible positions.