Brandon Florida Backflow Testing

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Hello, my name is Derek Olin, owner of Olin Plumbing.

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Today we're going to be showing you how to test a

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1 inch Wilkins 975 XL RP device.

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This is a backflow device.

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And generally the tests are done annually

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required by the City of Tampa and Hillsborough County.

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So to show you

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what and what this is for and explain to you

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why it is important to have these devices and also have them tested.

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Here we go.

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Basically I just use two hoses on this

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as opposed to the three that comes with the kit.

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What we're going to be doing is testing.

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First we're going to test check valve number 1.

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We hook the low hose.

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And the high hose up

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to the number 2 and number 3 test cocks on the device,

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the valve service valve leaving the device is in the off position.

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And the number 1 ball valve feed valve is in the on position.

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And these valves have to be tested wet.

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So I'm going to

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turn on the number 1 2 number 2 test cock.

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And the number 3 test cock.

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Now we want a reading of 5 pounds or more

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on this uh...

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On this check valve.

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Here we have a reading of 8.2.

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Now the relief valve, which is located at the bottom of the device here,

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that has to open at a minimum of 2 PSIs.

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And it also has to be at least

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3 pounds less than the 8.2 that we have here.

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Otherwise, that check valve or that relief valve is not opening properly.

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So to do that,

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we will

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open up the high side, the low side

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and while watching the gauge I hold my hand underneath

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and as soon as water touches it, okay, it opened at 3.4.

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So 3.4 to 8.2

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is more than sufficient.

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And now we're going to check the number 2

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check valve.

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We hook the low hose to test cock number 4

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and the high hose to test cock number 3.

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And...

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we turn the

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to on

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pressurize our gauge.

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Now test cock or check valve number 2

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has to hold a minimum of 1 PSI of back pressure.

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And here we're sitting at 2.1.

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This valve is in great shape.

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Depressurize it.

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Turn the test cocks off.

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And we'll turn the service back on to the residence.

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And there you have it.

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We're off to the next one.