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b-rian

09:11AM | 11/24/02
Member Since: 11/23/02
1 lifetime posts
Bvplumbing
My plumbing squeals (about 2 octaves above middle C, if you're musical) - it seems to be the cold side. It starts when the water is shut off, and goes for 15-20 seconds. Recent changes I've made are moving plumbing pipes (due to a wall removed)between downstairs and upstairs bathroom, and removed an upstairs bathroom sink, and capped off the lines. I drain the pipes, and that seems to help for a minute, but the problem seems to worsen when the softener re-cycles. this is driving us crazy. any ideas? bh

raymondvinzant

07:47AM | 11/27/02
Member Since: 11/17/02
50 lifetime posts
I always check the toilets first. The diaphram inside the ballcock is made of rubber, even though suspended in water, the gasket often dries out. As the valve in the toilet attempts to fill the tank to the last 1 inch, the valve begins to shut off, since it is hard it doesn't have the elasticity to form against the plastic or brass seat, so it begins to bounce. The bounces are a micro shut off and turn on. The vibrations created by this, are very similar to the lips on a trumpet player, and since the pipes are made of copper or metal, they send a harmonic vibration throughout the water that will last until that last one inch of water is filled in the tank and the pressure exerted up on the ball is so great it has no choice but to shut off completely.
You can test this by simply lifting up on the float ball when you hear the noise. If it quits, you've found your problem.
If this doen't solve the problem, its most likely something similar in one of the faucets.
Good Luck
Ray
Master Plumber
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