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rsmith0399

Starting Member

1

Saturday, March 18th 2017, 3:15pm

Need to drain supply line

Every year my backflow preventer freezes. I drain it each year, but it still freezes. This year the supply valve froze on the intake side.
Is there a way I can put a valve under ground on the supply side in order to drain the line each year and keep the water from building up behind the shutoff valve?

BackflowInspector

Supreme Member

Posts: 480

Location: Houston, Texas

2

Sunday, March 19th 2017, 11:45am

Yes
But First, There is a chance that you already have a shut off valve in the system.
If you know where your connection to the sprinkler water from the house water is, that is where to look.
Usually, a couple feet from the water meter or point of connection. It will be in a round valve box, usually grass will grow over the shut off valve. If you tap a shovel into the ground and listen for a thud or different sound than grass you may find it.

Or if you do not have one you can find the supply line to the Backflow preventer and install a ball valve.

Good Luck.

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