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Trap test

HEATONHEATON Posts: 113Member
WHat is the best way , short of dismantling , the radiator traps on two pipe steam systems?

Comments

  • Jamie HallJamie Hall Posts: 10,651Member
    When the boiler is running... a) the radiator should get hot. If it doesn't, the trap is failed closed (or, of course, the inlet valve is closed...). b) when the radiator is pretty well hot all across, the outlet pipe (below the trap) could be warm -- perhaps quite warm -- but not steam hot. Best to check with an IR thermometer, but can also do it by hand. If the pipe is steam hot, the trap is failed closed.
    Jamie



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



    Hoffman Equipped System (all original except boiler), Weil-Mclain 580, 2.75 gph Carlin, Vapourstat 0.5 -- 6.0 ounces per square inch
  • AbracadabraAbracadabra Posts: 1,948Member

    .... If the pipe is steam hot, the trap is failed closed.

    Think you mean "open" :)

  • Jamie HallJamie Hall Posts: 10,651Member
    Yup. Guess I'm getting old!
    Jamie



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



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