Water 'Hammering' issue

[Singleminded]

Need some help with a weird problem.....!

Background:

We're in a campground (which we've been in for the past three months) in a 2016 Winnebago TT hooked up to the 'city' water supply. We haven't changed anything in the water supply set up....(other than the filter two months ago) and do not have a pressure regulator hooked up in line. (haven't needed one....campground water pressure is very stable)

After flushing the toilet.....When we depress the foot pedal further to allow some water to build in the bowl, we get very loud 'hammering' sound from the rear (junction box, water inlet location)!

None of the other water sources (kitchen sink, bathroom sink & shower) have the same problem....when flowing water, no hammering!

Any suggestions would be appreciated!

[jplante4]

Check for a broken clamp in the area of the noise allowing the pipe to float free. If it just started with no change in water pressure, I would suspect this.

[Dave_H_M]

I got the same deal on my commode. I think it is/may be a function of the valve in the commode.

[RoyB]

Search google for water hammer arrester... then select images... lots of photos on what a water hammer idea looks like...

I bet one of those small size 2-Gallon Expansion Pressure Tank LOWES would work too...

Roy Ken

[RJsfishin]

Don't know why one outlet would do it and not others, but a small bladder tank will stop it, or a hammer arrester ???

[cpaulsen]

Just get a water hammer arrester and put in the line the main water line. Had the same problem on my 5ver and that stopped the problem. Bought one off of Amazon that had shark bite fittings on both ends.....and cut the pex line in my storage compartment. Took about 5 minutes to install.