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Water Meter Reading Increases by 6L in 5 Hours: Non-Return Valve Age, Cistern & Boiler Factors

stachu12q 16875 8
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Treść została przetłumaczona polish » english Zobacz oryginalną wersję tematu
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  • #1 16473120
    stachu12q
    Level 2  
    For 5 hours it picks up to 6 liters. Should there be a non-return valve behind the water meter (the current one is 14 years old) and its possible replacement will solve the problem? The flush valve is turned off so this is not a leak. If, apart from the cistern, I also turn off the water supply to the boiler, the water meter does not fill. For two hours, the water meter did not even move. With unscrewed cistern and boiler valves, when a neighbor from above draws water and turns it off after 10 seconds, the water meter turns on.
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  • #2 16473123
    stanislaw1954
    Level 43  
    How many water intake points do you have that you can't locate?
    stachu12q wrote:
    when a neighbor from above draws water and turns it off after 10 seconds, the water meter turns on.
    Is the neighbor on your meter?
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  • #3 16473130
    stachu12q
    Level 2  
    stanislaw1954 wrote:
    How many water intake points do you have that you cannot locate?
    stachu12q wrote:
    when a neighbor from above draws water and turns it off after 10 seconds, the water meter turns on.
    Is the neighbor on your meter?

    No, it's not. I live on the ground floor and it is a two-story building.
  • #4 16473146
    stanislaw1954
    Level 43  
    Close the main valve behind the water meter, if any, and check that the water meter is still spinning. By the way, you'll find out if there is any "left" drain from your water meter.
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  • #5 16473182
    stachu12q
    Level 2  
    I have a ball valve in front of the water meter and it is turned off so that the meter does not fill the water. Behind the water meter only what valves I could turn off are those on the water supply to the cistern and electric boiler. And then the water meter will not even shake. The problem returns as I unscrew the valve to the boiler. I found something like this on the web link
    and does this text relate to my problem? The check valve is only a little old.
  • #6 16473199
    stanislaw1954
    Level 43  
    This link is talking about 2 check valves: before and after the water meter, and you mention that you have 1 - before the water meter and it is not sure if it "holds" well. You may need to think about replacing this before and putting a return valve behind the water meter.
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  • #7 16475418
    jdubowski
    Tube devices specialist  
    stachu12q wrote:
    If, apart from the cistern, I also turn off the water supply to the boiler, the water meter does not fill. For two hours, the water meter did not even move. With unscrewed cistern and boiler valves, when a neighbor from above draws water and turns it off after 10 seconds, the water meter turns on.


    The cistern is unlikely to be guilty, the reason is the airbag in the boiler and the malfunctioning combined valve at the boiler inlet (or lack thereof) and the malfunction of the check valve behind the water meter.
  • #8 16480422
    wnoto
    Level 34  
    A change in system pressure causes water to flow through the water meter ... but only one direction is recorded by it.
  • #9 16484500
    stachu12q
    Level 2  
    Problem solved. The safety valve in front of the boiler was changed first and it did nothing. It was enough to replace the check valve behind the water meter and after the problem.
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Topic summary

The discussion revolves around a water meter that recorded an increase of 6 liters over 5 hours, raising concerns about potential leaks or faulty components. The user confirmed that the flush valve is turned off, indicating no leak from the cistern. They noted that turning off the water supply to the boiler also stops the meter from moving, suggesting the issue may lie with the check valve behind the water meter. Responses indicated that the check valve's age (14 years) could be a factor, and it was recommended to replace both the check valve and possibly install a non-return valve to resolve the issue. Ultimately, the problem was resolved by replacing the check valve behind the water meter, confirming it was the source of the water flow issue.
Summary generated by the language model.
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