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Posted by David on April 26th, 2003 07:24 AM
In reply to Problem with back pressure after commode fills with water by Mark Valentine on April 25th, 2003 08:30 PM [Go to top of thread]

Hi Mark,

Your answer may depend on just how much adjustment you can effectively make with the access to your plumbing. You might be able to solve the problem by slightly closing the toilet's shutoff valve or adjust the float valve to cause the shutdown to take place a little more gradually, but you can only go so far with these before it affects the proper function of your appliance, so make any adjustments slowly & test as you go.

Beyond this, you could require the installation of an air gap "shock arrestor" to compensate for the jolt, or may need to search the lengths of your supply lines for points such as elbows close to framing where shock forces the piping to suddenly jump, striking the framing as it moves.

I'd first try slowly closing down the shutoff valve a little at a time until the noise stops; if the tank refill time is still acceptable, this would take care of the disturbance.

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