Water Hammer

[novicegas]

Anyone fitted a mini arrestor before?

Any tips, think i'd be fine fitting to copper but fitting to half inch barrel not so sure.

Many Thanks

 

[SimonJohns]

Why are you needing this. Usually you can find the reason for the hammer

Eg float valve. Tap. Lack of clipping etc

 

[Smac]

Hi Simonjones I have a problem regarding water hammer I have done all that I can possible think off fitted tee piece on mains pipework in roofspace with 28mm pipework with stopend fitted also fitted prv on incoming mains change floatvalve on tank and pipework is well clipped but problems keeps happeing would be grateful of any other tips

 

[SimonJohns]

does the floatvalve cause the water hammer?

 

[Dannypipe]

Good question.

 

[Smac]

Can't really as this is not happening when I am at the cust house during day time only happeing early morning or late evening time

 

[SimonJohns]

try changing the washer in the float valve, and if its a type 1, upgrade it to a type 2

 

[Smac]

Float valve has been changed to type 2

 

[SimonJohns]

Float valve has been changed to type 2

Recently?

 

[Mike Jackson]

Look at fitting an equlibrium valve instead of a standard part 2. Part 2 float operated valve will still oscillate under high pressure conditions. Although you have fitted a PRV the static pressure will creep up in the pipework when there is no draw off so a slow draw from the cold water cistern like a toilet valve can still cause the valve in the loft to oscillate.