pipe size

  1. T

    22mm vs 15mm pipework?

    Hi All, Looking for some advice regarding pipework sizing for an upcoming renovation of a 1880s 4 bed property. Entire house is going to be re-plumbed in plastic rather than copper, gas combi boiler will be fitted and the old lead mains supply replaced with 25mm MDPE. The mains water enters at...
    • TeamRocket
    • Thread
    • central heating pipe connection pipe diameters pipe size pipework plumbing
    • Replies: 9
    • Forum: Plumbers' Talk
  2. A

    Water pipe size, length, junctions and flow rate - stopcock to boiler

    First time on here. Trying to understand implications of pipe size, length of run, and number of junctions etc. en route between incoming feed and Combi-boiler. For various reasons it is difficult to get from stopcock to boiler without taking indirect route back across room under kitchen floor...
    • Andy VC
    • Thread
    • 22mm boiler combi-boiler flow rate pipe bends pipe length pipe size t-junctions water flow rate
    • Replies: 0
    • Forum: Plumbers' Talk
  3. S

    Water pipe size 15mm

    Basically I'm waiting on a plumber to come repipe water/heating pipes from new boiler during renovation... as he is really busy time is tight and thinking of doing the pipe work myself and leave the boiler connection side to him saving time. Am I ok to just use 15mm to toilet sinks bath/shower...
  4. C

    What size MDPE ?!

    I am in the process of getting water into the garage for a washer. Drainage is sorted, but now need to run a length of MDPE from the kitchen to the garage. The foundations of the house are a raft, which rules out taking it up through the floor, atleast for me. I plan on running the MDPE 750mm...
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