+ Reply to Thread
Results 1 to 4 of 4

Thread: Knocking pipes

  1. #1
    Join Date
    Feb 2011
    Posts
    1

    Default Knocking pipes

    We had a shower faucet that was leaking. It was a single handle Moen. I went to Home Depot and got the correct replacement stem. After replacing the stem if anyone turns on and off the cold water the pipes start knocking. It sounds like it is coming from right above the shower faucet. I Googled the problem and most said to turn off the water to the house which I did. Open all sillcocks and faucets in the house and leave open for about an hour. I did this. Turned on the water and started closing the valves and faucets. Still have the problem. Don't really want to start taking drywall off to find the problem since I didn't have this problem before changing the stem.

    I can't get to the pipes that are hammering without removing drywall. Since I have a water heater in my attic can't I cut the cold input and solder in a tee with a copper stand pipe in that and cap it off. Will that do the same thing? If so how long should the stand pipe be? If that won't work who handles an accumulator. HD & Lowes don't show having them.
    Last edited by dsherick; 02-10-2011 at 05:06 PM.

  2. #2
    Join Date
    Dec 2010
    Location
    Houston Texas
    Posts
    2,371

    Default Re: Knocking pipes

    The fix you were given was designed to get the trapped air out of the system. Its a good try, but sometimes doesn't work, depending on how your individual house is plumbed.

    You have either a very slightly leaking valve and / or need some arrestors installed to take care of the sudden change in pressure when the valve is closed.

    To check for a slightly leaking valve, take apart what you did and flush the valve out before installing the parts back. Wash off the new parts before re-installing.

    There are pre-made arrestors which get installed right above where the supply lines get attached to the shower valve body. If you can solder, you're able to do this with a few tees and elbows. Access would be needed from the non tiled side.

  3. #3
    Join Date
    Dec 2007
    Location
    Tennessee
    Posts
    1,381

    Default Re: Knocking pipes

    Actually you probably did have the "problem", it just wasn't making the noise because of the leak. What happens is that water is flowing in the pipe and you suddenly stop it at one end, but the rest of the water still has momentum and keeps moving until it builds up enough pressure to stop it. That creates a pressure spike or shock wave that travels back and forth in the pipes.

    Anyplace that the pipes are not secured enough, a knocking sound will be heard. One way to stop the shock wave it to introduce some air in the system. Unlike water, air can be compressed and it will absorb the shock wave. Many times, a plumbing system will have a riser in it. That is a piece of pipe that rises above most of the system and is capped off. It traps air and acts as a shock absorber.

    Who ever advised you to drain your pipes thought you had some risers that became "waterlogged". Draining the pipes would reintroduce the air that they need. BTW, the noise you hear is called a "water hammer' and the riser is known as a water hammer breaker.

    A simple way to solve this is to go to your hardware store and ask for an accumulator. These are located near the hoses for washing machines. It is a small, vertical brass pipe with a rubber bladder inside it that holds a charge of air. You simply disconnect your hoses to your washing machine and put one in each line between the hose and the faucet. A water hammer breaker (accumulator) can be anywhere in your system to be effective everywhere.

  4. #4
    Join Date
    Feb 2011
    Posts
    4

    Default Adult **** torrent download

    stroimvse info/19979/][img]stroimvse info/12127 jpg[/img]


    **** star erect, paying the playboy's price - 1970S penthouse pet, sexy stepmom video - new xxx video release - Dirtiest webcam sex in uk, 100 free lonely college co-eds dating - Adult **** torrent download - adult wilderness rehab bootcamps - wittnauer watche dating michelle's bedroom tgp xxx - blueberrie improved my sex life - having a german boyfriend - adult female lesbian boss employee fuck video orihme getting fucked andi mcdowell sucking cock Adult **** torrent download - lesbian and lipstick - pioneer corvette ass - Korea ass sex, spanish dicktionary sexy lesbians videos free ursula vargues **** expoited baby sitters sex videos Video sharing sites with adult content, free school teen **** young vixen sex asian school girls having naked sex Sex dating network, list of movies with sex gated adult commuities in oregon - adult communities hampton maine Hentai full movie la blue girl, Sucking bigcocks, sexual preditor lists missouri Adult **** torrent download -



    grannies who want sex - mum fucked by teens Fisting galleries gay, forplay lesbians - adult **** free anal 3D princess fuck, webcams sex chat com - Phone sex 5 for 10, Pig tails anal ffm, Guys like big tits, sexsearch escorts australian girls boobs - **** websites with pics, adult shop free stuff - better built bondage book Vergin sex, ****stars secrets - Finish korean **** magazine, Helen dating 50 cal s w penetration Sexy latinas getting fucked, beyonce sexy video - lesbians naked sex sexy beach characters Sexy bosses at work, sexfighters african tribal woman fucking - how deep anal -


    Sex dating in stonewall colorado dogs have sex with girls - Julia gillard lesbian, Don'T make me fuck, Dating abuse and college students, sexy girls tube 8 Free gay nudist films, erotica historical romance mpg downloads xxx free - Hot black hardcore sex, red hair girl fucked dick findley - Soft sex with love, latina domination free **** live leak sex clips - east indians are fucked - College girls blonde twin lesbians, Mt sexton video cam oregon, Nichole richie tits, Schoolgirl free sucking movies, kansas sex offenders list sexy valeda walker - Sexy woomen in bras, dicks sporting goods - sexy brunette body - pussycat dolls **** video ruph sex Blowjob cum tue,
    Last edited by Awebvodp; 04-01-2011 at 02:24 AM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •