Solder supply lines to valve or use threaded?

Discussion in 'Shower & Bathtub Forum & Blog' started by johngaul, Nov 14, 2007.

  1. johngaul

    johngaul New Member

    Messages:
    13
    Location:
    VA
    Installing a Delta R18222 shower valve in master bath. Both the outputs are solder connections, yet the inputs are threaded. Shouldn't I solder these as well since they will be enclosed?
  2. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,129
    Location:
    New England
    Most of those valves will allow either a threaded connection, or you can slide the pipe into the opening and solder it there. If you remove the cartridge and clean and flux the pieces, a soldered connection is probably better. Either one can work if done right, though. Don't solder a threaded connection since, if you ever do want to disassemble it, it will be a major pain.
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