Banging / vibration from new bathroom hot tap

[Ponnymeister]

Help please!

Just installed 2 x new taps in upstairs bathroom.

Turn on hot tap, it dribbles for a bit as you open the tap, then fires out full pressure. Try to turn it down a bit and get the really loud repetitive banging on the pipes until I either turn tap full open or off. During the banging the water is spluttering out the tap at a fairly fast rate.

I have tried all the usual tricks thinking it was an airlock to no avail, including connecting a hose up from the mains. Actually that worked for a day or so but the dreaded banging returned.

We have very high water pressure, but no problems before changing taps. On a Worcester combi boiler, no tank.

Any help very gratefully received.

John

 

[granty1]

try turnig water pressure down at stop cock

 

[seco services]

sounds more like a faulty jumper inside the tap
shutting stopcock won't reduce the pressure only flow

 

[Ponnymeister]

brilliant, thank you. Gives me something to investigate

 

[seco services]

try swapping the two tap inserts over or you may find the fault when you strip the tap down.