I'm in the process of upgrading the downstairs bathroom and have bought a Salamander 2.25 bar pump which will also boost the hot supply to the kitchen which has had poor pressure since installing a new tap which I presume has a ceramic valve. The pump will be installed in the airing cupboard close to the HWC.
Anyway I'm digressing. To run some new pipework to the repositioned bath/shower valve I was considering Speedfit/Hep 2o etc. It will be easier to route around ceiling joists etc and should minimise joints, and bends will be smooth arcs etc. The pipework I will be connecting to with the Hep
2o is existing 15mm copper, not ideal but it will have to do.Looking at the joints, the manufacturers recommend sleeves are used to support the pipe internally, I presume to stop it being crushed. Bearing in mind its only 15mm pipe, will these sleeves restrict to any great degree the flow rate?
To join the pipe to the existing copper I was considering the use of a full bore valve, such as a stopcock. I seem to think service valves etc will restrict flow? In this way I make the joint and also have a convenient way of shutting the supply off if needed. Should I be using brass compression valves or hep 2o variety to make the copper/Hep 2o pipe joints??
Whats best Speedfit or Hep2o ?
Justin