Water pipes rattling a lot


Old 11-22-16, 01:28 PM
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Water pipes rattling a lot

Hello all, I have a major headache at my house. I have a major case of water pipe rattling. I dont know how it started but when it rattles, I feel like pipes are going to burst or something.

The most noisy rattling comes on when I turn on the laundry machine. I have posted a small clip of the issue on youtube and here is the link.


Not sure how many of you can tell the problem right away, but I googled and googled and sometimes I came across a water "hammer" explanation and not sure if this is the case I am having. Apart from the laundry machine, turning on hot water in kitchen sink abruptly stopping and starting is trigerring this issue. Everywhere in the house it is pretty quiet. Point to mention: kitchen is above the laundry room. Not directly above but nearby. I hope I was pretty detailed and I can get some positive feedback from you experts Any input is greatly appreciated. Thank you for your time.
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Old 11-22-16, 02:51 PM
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I would try a hammer arrester at the washing machine valve and see if that stops it.
Here's an example:
Quiet Pipes Washing Machine Water Hammer Arrester-38600 - The Home Depot

Here's a mini 3/8" compression arrester for the kitchen sink:
Mini-Rester 3/8 in. x 3/8 in. Copper Compression x Compression Water Hammer Arrester-HD660-GTR1 - The Home Depot
Old 11-22-16, 03:50 PM
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Looks like too high psi in the home. I believe the washer is alternating the selonoid for temp compensation.. Mixing H/C..

I would check the psi in the home with a gauge. static and dynamic pressure.. Look for a faulty PRV valve in the home..

Start there.. let us know...
Old 11-22-16, 05:00 PM
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The arresters I linked to are a quick fix or maybe just for diagnosis.
Lawrosa's advice gets to the root of the problem.

I'm decent at plumbing but usually call in a pro for a PRV problem.
Old 11-24-16, 12:08 AM
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A loose faucet washer (perhaps in one of those laundry hose bibs) can cause an unbelievable hellacious racket. Checking the incoming pressure is a good idea though. Easy to do with a $10 pressure gauge that you can screw on to a hose bib.

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