Circuit setters

Wayco Wayne

catolog with a B & G circuit setter. It had a visual flow meter glass you can eyeball the flow visually. Looked not bad. WW

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Wayco Wayne

On VSI systems

what do you all use for circuit setters. What brands, do you use and why? Thanks for the input. WW

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bigugh_4

I liked

Armstrong brand. They have a remembering feature that allows them to be set and also used for shut off later. when re-opened they return to the exact preset setting. As with all technical equipment, there is always something to look out for. Circuit setters must be placed right, up right, and balenced right to do any good. Balance and test of these devices is and can be a very tough job. there are folks who do it for a living. Like replacing glass, leave it to the professionals. you'll cuss less!

Jerry Boulanger_2

If you know roughly

how much head loss you need from the balance valve, you should be able to preset it. For example, you need 2 gpm flow in your injection circuit and from the pump curve you know that the pump will produce that flow at 6' of head. The head loss in the injection circuit piping is usually very low, say 1'. Your balance device, therefore, needs to add 5' of head. Almost every manufacturer of balance valves provides the information necessary to use the scale on the valve to preset it for, in this case, 2 gpm at 5' of head.

If you find when doing this that the valve size you're using is very nearly closed to get the flow required, use the next smaller size valve. It'll be quieter.

Jerry Boulanger_2

I think what you saw

was B&G's Thermoflo Indicator. It must be used in conjunction with a balance valve, and only goes down to about 10 gpm, too high for small injection applications.