serious watter hammer!

[CXR100]

went to a house today , toilet overflow, simple i think , replace plastic ballvalve with a new part 2 brass one, turn watter back on, as it fills up it makes a huge water hammer thru the house, now i cal visually see the pipe vibrating from the ballvalve of the low level cistern to the floor as it has no clips on, so i clip it with s/o clips (2) . turn water back on , still the same but not as bad. so as flooring was all t&g and i cant get access to pipe to clip it under the floor i fitted a new plastic ballvalve wich sorts the vibrating problem , but it cant cope with such high pressure and is contantly dripping!!! i tried another plastic one as i thought it was faulty , still the same!! so sugested to customer about putting a prv on the incoming mains, she refused saying she likes the shower "force" . anybody know what i can do?? i have seen some side entry torbeck valves , any good??? would it solve my problem???? thanks guys!!!

 

[SimonJohns]

Usually you can fit the plastic restrictors in the inlet

 

[gassafe]

Sounds like a prv needed, set it at 3 bar should be plenty for the household.

Not sure what ball valves your using but I have often fitted fluidmasters to solve water hammer issues on w.c's successfully before. Another option would be one of those shock arresters possibly, but not had much experience with them.

 

[CXR100]

it was more of a deep vibation rhather than a watter hamer as i a water hamer when a lever tap was turned off, anybody had plastic ballvalves leaking before??? i dont fit them because they ar cr*p , but i had 2 on the van in some dudley low level cistern kits, she wont let me fit a prv tho , i was thinking about one of these as they just shut off dont they Torbeck side entry float valve

 

[gassafe]

Bugger that! I've had too many if them giving grief... Get a side entry Fluidmaster, they shut off instantly & quietly and handle low pressure right up to high pressures easily.

 

[CXR100]

cant see what a plastic restrictor would to to be honest??? surely it does nothing to the pressure???? , cool gassafe , ill buy one of those and wait for the callback "my overflow is still dripping!!" "as i told you it would" !!!!!

 

[Phil]

I never fit a ballvalve brass or plastic without stripping it down first, more than likely there is a plastic burr on the seat from the injection moulding process.

 

[SimonJohns]

cant see what a plastic restrictor would to to be honest??? surely it does nothing to the pressure???? , cool gassafe , ill buy one of those and wait for the callback "my overflow is still dripping!!" "as i told you it would" !!!!!

I don't want to go into any science.

The valves are designed in many different ways. And some reccomend fittings these plastic contraptions in the inlet

But I would also deffo reccomend a fluid master

Brass shank. And all round better quality

 

[gassafe]

cant see what a plastic restrictor would to to be honest??? surely it does nothing to the pressure???? , cool gassafe , ill buy one of those and wait for the callback "my overflow is still dripping!!" "as i told you it would" !!!!!

it won't drip with a Fluidmaster. 100% shut off! They seem to seal even better on high pressure... Screwy got some good deals on Fluidmaster stuff at the moment.. Worth stocking up, always use fill valves etc...

 

[CXR100]

wasnt dripping from where youd think , it was dripping from the lage nut at the front that holds the "arm bit! stuck on !!! and yes i did tighten it! 😛

 

[galaxy_plumbing]

had this before. horrible noise, 3 plumbers didnt fix it, flow restrictor did the trick, fitted in valve inlet.

 

[jtsplumbing]

If water pressure is that high it needs a PRV,

 

[gassafe]

If water pressure is that high it needs a PRV,

Agree with the above! The customer might like the "force" you describe it as but she won't like it when a fitting blows off!