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-   -   Fixed water leak now low pressure (http://www.diychatroom.com/f7/fixed-water-leak-now-low-pressure-112659/)

whitecrow 08-01-2011 04:47 PM

Fixed water leak now low pressure
 
I fixed a leaking section of horizontal pipe that comes into the house. The water line comes up from the ground to this horizontal section, then it gos into the house.
After I put a new section in, the water pressure in the house will be good for about 20 seconds then go down to almost none. Every faucet in the house, toilet,washing machine etc.
The water company checked the pressure from the road and it was 80psi. There is no way that dirt or debris got into the water line during fixing it as the section I was working on is above ground and horizontal.
We can't figure it out.
There is another thing I will mention
The section of pipe that we took out had a Tee on it with a dead-end section about 6inches long capped off at one end. We thought that maybe someone was going to put in a water spigot at one time. We took this off and fixed the leak by putting an elbow in, instead of the Tee and capped-off line.
Could taking this off somehow affect the water pressure? I know that some people put in "water chambers" like this to stop water hammer, but could this have something to do with the pressure? It doesn't make any sense. Thanks for any help.

rjniles 08-01-2011 06:09 PM

What type pipe? Post a picture.

TheEplumber 08-01-2011 07:01 PM

Sounds like a partial blockage. Usually due to scale build up breaking free from the inside wall of the pipe. Could even be rocks or some foreign object inside the new pipe that you didn't see.

whitecrow 08-01-2011 07:43 PM

Thanks for the replys.
1 inch diameter black poly water pipe, it was the same size and material used before.
There was no rocks or dirt in the new pipe we put on. The section was above ground and was fairly easy to get to. There is no debris in the faucet screens, the water pressure is low throughout the entire house.

I wonder if this could be some kind of fluke with the water meter. We got a long steel bar with notches at the bottom to turn the valve screw on or off at the water meter. To keep the water bill from being high, for 2 days we would turn the water on and off when we needed water. Could this somehow by chance caused some debris from the valve screw to lodge in the water meter? The water company checked the pressure before the meter but not after.

oh'mike 08-01-2011 07:58 PM

The water shut off valve---is it a ball valve or a gate valve---how old ?

Gate valves are famous for failing---

whitecrow 08-01-2011 11:00 PM

Mike I think it is a ball valve. As far as I know it could be 20 years old. I found a picture on the internet that looks exactly like the water shut off valve. Here is the link http://file.seekpart.com/productsima...111823162s.jpg

oh'mike 08-02-2011 05:49 AM

Ball valve---That's not likely to be the problem.

COLDIRON 08-02-2011 09:11 AM

Sounds like the outlet side of the meter is low pressure probably something happened internal at the meter valve when you were opening and closing it. The only way to tell this is to check the pressure at the outlet of the meter.

whitecrow 08-03-2011 12:17 AM

Thanks Mike and ColdIron. Thats the only thing that I think it could be. The water company is reluctant to come out and check the meter.
They had to came out twice to check the pressure at the outside spigot.
The first time he came out he put the pressure gauge on and turned the water on.. then bam 70 psi. So he got in his truck and left. I had to have them come back out because they didn't turn the water on for 20-30 seconds like I told them to do before they checked it.
When I called them the second time to come out, the guy confirmed the low pressure but the secretary told me that if they had to come out anymore that they would charge me.
The water meter is their responsibility right? They need to come out and at least check the pressure after the meter.

whitecrow 08-03-2011 12:35 AM

I forgot to mention that the leak indicator at the meter is stopped when the water at the house is off. Every once in a while the indicator will spin backwards 1/2 turn or so.

rjniles 08-03-2011 05:27 AM

Turn the water off at the meter and open up your repair joint and turn the water back on. That will sectionalize the problem.

COLDIRON 08-03-2011 05:34 AM

Don't forget the followup always like to hear the outcome.

whitecrow 08-05-2011 09:41 PM

Rj that is the only thing left to do. There has been a new meter put on and it is still the same problem. I will get back with you all when we figure something out.

bobcatoh 08-06-2011 05:34 PM

It sounds like the valve at the meter or valve at the house isn't opened all the way.

whitecrow 08-13-2011 08:12 AM

The water company changed the meter and checked the pressure after the meter. All was fine, still trying to find the problem.


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