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Why do I have 2 pressuretrols and shouldn't they have a pigtail?

Erock7625
Erock7625 Member Posts: 7
in Strictly Steam
20241227_153557.jpg

Comments

  • neilc
    neilc Member Posts: 3,059

    the horizontal they're mounted on eventually fills with condensate, and acts as the water cushion / trap of the pigtail,

    I would want the devices mounted higher, above the upper 90's, keep the devices out of the water / gook,

    known to beat dead horses
  • neilc
    neilc Member Posts: 3,059

    2, in case 1 fails,

    1, setting higher than the 2nd, redundancy, though usually the higher setting is a manual reset model forcing you to see why it's cold in the house,

    known to beat dead horses
  • 109A_5
    109A_5 Member Posts: 2,941

    Its like an unfolded pigtail, that is bigger in diameter, so the needed clean out intervals should be much greater and it is easier to clean out by just removing the pipe plugs. However one device would need to be removed in this setup to restore the water trap after cleaning.

    National - U.S. Gas Boiler 45+ Years Old
    Steam 300 SQ. FT. - EDR 347
    One Pipe System
    PC7060
  • EBEBRATT-Ed
    EBEBRATT-Ed Member Posts: 18,722
    edited December 2024

    You don't need to restore a water trap or refill a pigtail. They will refill automatically the first time the boiler makes steam. I have seen many pressure controls without pigtails last a long time. getting steam to a pressure control a few times in it's lifetime won't hurt it.

    The nipples going in the controls should be brass and they should be longer to get them out of the water.

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