Prevent Water from House from Draining.


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Old 07-26-23, 06:31 PM
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Prevent Water from House from Draining.

I am replacing my Water Pressure Regulator. The meter is 30 inches lower than where it goes into the house and about 80 feet to the meter and 16 inches deep. When I cut the PVC pipe at the old regulator is the water from the house line going to fill up the hole (18x18x16 inches), I dug. Planning to leave all the other faucets closed. Hoping it would work like a straw with your thumb over the end with all the faucets closed. I estimate it would be about 6-7 gallons.
 
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Old 07-27-23, 05:04 AM
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Yes, the water will drain and fill the hole. Most common would be to bail out the water but you can check the rental stores in your area for a pipe freezing kit. It clamps over the pipe and it freezes the water in the pipe forming a plug. Then you can cut the pipe and work without the water coming out. You can also do the same with dry ice. But, that whole freezing process takes about 1/2 an hour and is expensive so almost nobody does it.
 
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Old 07-27-23, 06:52 AM
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If you have a shut off valve inside where the pipe enters the house, closing it will prevent house water from flowing back into the pit.
 
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Old 07-27-23, 10:34 AM
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pipe freezing kit.
​​​​​​​When I cut the PVC pipe
​​​​​​​Can that be done with PVC?
 
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Old 07-27-23, 01:26 PM
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Freezing works as long as both ends of the pipe are "open" to accept the pressure of the expanding ice. If it's near a closed valve the pipe has a good chance of bursting. The key is to not freeze too large an area and give the pressure somewhere to go.
 
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Old 07-31-23, 08:22 AM
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I am replacing my Water Pressure Regulator.
Is this a Pressure Reducing Valve? Are you locating it outside at the meter and underground?
 
 

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