Loud Banging Pipes? Fixed! Water Hammer Knocking Toilet Tap Washing Machine 

Brilliant video

Buy an tapered drill, so you can remove the inside edge after you cut your pipe. I use 1 with the max size 20 mm, you can use it for 22 mm copper and any pipe that’s smaller. Use 2 wrenches on the same time, on each side 1. So you can easily hold the appliance at the desired spot. 👍

I say problem here is , he had new taps fitted before, on a old system pipe work which is never clipped properly and will be branching off to a wash hand basin taps , and specially underneath a bath 🛁, where two pipes next to each other , it creates a big back pressure on quarter turn taps by turning them on and off, cheapest option replacing every single cartridge upstairs, one of them is faulty , and if any assembly of ceramic disc parts lose inside the cartridge will create hell of a lot banging noises once you open them whilst running water from either tap or shutting them on and off .