First post for me need advice i work as maint plumber at a boarding school have been told to remove basin for new worktop and replumb. it is on the top floor of a 3 storey building hot and cold are fed from two twin set lowara booster pumps tank fed from loft tank. service valves are old type gate valves that have seized and won't shut off cold and hot to pumps are 1/1/2" steel galv. found a lever valve at ceiling height which i shut off which cut off cold to this bathroom. so decided to put new 22mm lever valves above old ones so cut out the pipework. when i did this i found that water was pushing up through still although valve was off and no water came out of the other taps in this area. so wondered whether i needed to drain down to bathroom below and turn off booster pumps to be safe did not want to airlock the system. advice please
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!