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Understanding two way and three way Jandy valves.

The Jandy valve has become the standard of the industry over the past 25 years. Several other manufacturers have similar diverter style valves that look and operate like the Jandy valve.

Two Way Jandy Valves

    The two port Jandy valve controls the flow of water through a pipe, much like a traditional gate valve or ball valve would operate.

    This valve has an internal diverter. There is a "block" that corresponds to the OFF indication on the handle. In the graphic, the off "block" is to the side, allowing the water to pass freely through the valve.

    If the valve handle was turned 90 degrees, so that it was inline with the piping, it would then position the off "block" directly in front of of the ports, thus blocking the flow of water through the valve.

Three Way Jandy Valves

    The three port Jandy valve operates like a plumbing tee and allows you to bring two lines together and select which line you want the water to go through.

    The basic operation of the off "block" is the same. If you block off one port, the water flows freely between the other two ports. If you block off no ports, the water is allowed to flow freely between all three ports.
    In our article on valve settings, we show how these valves work in typical pool systems. We have diagrams that show the settings in various situations.

NEED HELP? Having problems with your valves or plumbing? Contact Pool Stop today! Give us a call at 972-772-4545 to ask questions or set up an appointment OR hit the "Request Info" button and fill out a service request form so we can schedule your service call. Our team of experienced, licensed professionals is available to help you with expert advice, repairs, and installation.

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