Re: Water Hammer
Posted by hj on April 04, 19100 at 02:58:32:
In response to Re: Water Hammer
Water hammer is inside the pipe, so strapping it has no effect on it. The stapping will reduce pipe movement due to the hammer, however. Air chambers are one way to eliminate or minimize it. They should be oriented so that a shock is transmitted directly into it. The larger and longer they are the better they work. For a 1/2" line, I usually install a 3/4 x 1/2 x 1/2 tee in place of a elbow and install an 18 or 24 inch riser into it.

: I've recently completely re-did my masterbathroom, including a lot of new plumbing. I've been very careful to strap all my pipe with appropriate strapping, but I still get a considerable water hammer with all three fixtures (shower, toilet and sink, that order in circuit). I thought of using air traps, but what are the specifics of installing them.? Where in relation to the valve, how high above valve, orientation, and opening (I've heard to use a 3/4 to have reducer with a 3/4" air trap on 1/2" pipe)? Any pictures to look at?

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