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    Why brass? (3 Posts)

  • mgmine mgmine @ 9:59 AM
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    Why brass?

    In this link concerning hooking up a vaporstat it says to use brass fittings. Why? Would it be to stop a galvanic reaction or for some other reason.
    http://www.heatinghelp.com/files/posts/14911/Low%20Pressure%20Gauge%20Piping%20-%20%20Bill%20of%20Materials.pdf
  • vaporvac vaporvac @ 12:45 PM
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    Brass or bronze? Union?

    I see that actually say bronze...I bought mine brass. Is that OK. Also, I put unions at both the top AND bottom of the pigtail thinking I could take off both controls and not have to worry about removing the pigtail. Is the illustration a way better way?
    This post was edited by an admin on January 31, 2014 1:12 PM.
  • Jamie Hall Jamie Hall @ 1:08 PM
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    Brass or bronze...

    but I don't think I've ever seen a bronze pigtail; it's usually red brass.

    And the reason isn't a galvanic reaction problem, it's that iron will rust and plugs up much more quickly and is harder to clean. 

    Unions?  I love them.  Makes life so much simpler...
    Jamie

    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England.

    Hoffman Equipped System (all original except boiler), Weil-McClain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
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