I've just had lead pipework replaced with copper and now get water hammer when closing the kitchen tap. It's a quarter turn mono type and from reading this forum it seems to be a common problem with these taps.
Before I ask my plumber to come back and fit a water hammer arrestor, I am wondering if this could be caused by bad design. The rising main is 28mm MDPE which is joined to 22mm copper. The 22mm goes to the cold water tank and has a 15mm tee that goes to the kitchen tap. The 15mm run is around 4 metres. I am wondering if changing this section of pipework to 22mm would cure the water hammer issue (wider pipe, slower flow). Is it more common to run 22mm tright up to the kitchen sink taps and convert to 15mm just at the end of the run? Is this worth attempting?
Before I ask my plumber to come back and fit a water hammer arrestor, I am wondering if this could be caused by bad design. The rising main is 28mm MDPE which is joined to 22mm copper. The 22mm goes to the cold water tank and has a 15mm tee that goes to the kitchen tap. The 15mm run is around 4 metres. I am wondering if changing this section of pipework to 22mm would cure the water hammer issue (wider pipe, slower flow). Is it more common to run 22mm tright up to the kitchen sink taps and convert to 15mm just at the end of the run? Is this worth attempting?
