Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.

17 year old pigtail

The pigtail that is currently under my pressuretrol is 17 years old. It has never been cleaned or replaced in that time.



The pressuretrol seems to work correctly. The burner cuts in at .5psi and out at 1.8  

 

When the pressuretrol reaches the .5 level I can hear an audible hiss coming from the pressuretrol. This hiss continues until the boiler pressures down.



Is this a normal sound for it to make?

What would the symtons be for a clogged pigtail?
73 year old one pipe system with original American standard boiler, oil fired becket, 2 inch steel pipe main, 100 feet long, with 8 radiators above.

Comments

  • jpf321
    jpf321 Member Posts: 1,566
    AFAIK p-trols don't hiss...

    they should only click.



    bad pigtail symptoms would include inconsistent/unbelievable pressure readings, or pressure readings much lower or higher than accurate gauge on different pigtail location.



    what type of gauge are you using right now? is it new and low pressure?
    1-pipe Homeowner - Queens, NYC

    NEW: SlantFin Intrepid TR-30 + Tankless + Riello 40-F5 @ 0.85gph | OLD: Fitzgibbons 402 boiler + Beckett "SR" Oil Gun @ 1.75gph

    installed: 0-20oz/si gauge | vaporstat | hour-meter | gortons on all rads | 1pc G#2 + 1pc G#1 on each of 2 mains

    Connected EDR load: 371 sf venting load: 2.95cfm vent capacity: 4.62cfm
    my NEW system pics | my OLD system pics
  • steam-rookie
    steam-rookie Member Posts: 123
    17 year old pigtail

    Brand new low pressure gauge from gauge-store.com on a brand new pigtail.

    The new gauge and pigtail is independent of the pressuretrol

    Like I said before, when the boiler is cycling, it cuts in at .5psi and out at 1.8psi

    Should I just leave the old pigtail alone?

    Is it possible that its not clogged up after 17 years?
    73 year old one pipe system with original American standard boiler, oil fired becket, 2 inch steel pipe main, 100 feet long, with 8 radiators above.
  • steam-rookie
    steam-rookie Member Posts: 123
    17 year old pigtail

    From what I have described, is it safe to assume that the 17 year old pigtail is fine as is? No need to change it?
    73 year old one pipe system with original American standard boiler, oil fired becket, 2 inch steel pipe main, 100 feet long, with 8 radiators above.
  • Big Ed_4
    Big Ed_4 Member Posts: 1,682
    edited January 2010
    Plugged Pigtail

    Most of the time a plugged pigtail will shut down the burner .. The high pressure pushes against the muck plug disengaging the pressuretrol and hanging it up .. But your getting a hissing sound ? Sounds like a steam leak ...
    I have enough experience to know , that I dont know it all
  • steam-rookie
    steam-rookie Member Posts: 123
    edited January 2010
    old pigtail

    The p trol seams to be working fine. I have no idea why its making a hissing sound. I agree that it sounds like a steam leak but it must be only a very tiny one. Just enough that I can hear it,  if I get up close and personal with it.



    I should probably change it out for a new one but I would have to disconnect the electric connection on the p trol first. When and if I do this I will reassemble the thing with a union for future servicing. I noticed that the old pigtail under this p trol, has a normal 1/4 inch thread on both sides. The tap on the boiler that it screws into appears to be 3/8. It is connected there now with a 3/8 to 1/4 inch fitting.



    Is this typical?
    73 year old one pipe system with original American standard boiler, oil fired becket, 2 inch steel pipe main, 100 feet long, with 8 radiators above.
  • Hiss

    The hiss is not a normal sound coming from the P-trol, but it seems to be operating fine.  Even so, it the trap seal has been lost in the pigtail because of a leak in the P-trol, the life of the P-trol is shortened. I'd repalce the P-trol and the pigtail; make sure the pigtail is brass; it will last longer.  The electrical connections are easy; just 2 wires.  I've had a leaky P-trol straight out of the box.



    The 3/8" x 1/4" bushing or reducer is not normal, but is not necessarily wrong.
    Often wrong, never in doubt.
  • steam-rookie
    steam-rookie Member Posts: 123
    hissin noise

    I got my ear up to that p trol and it is not making the hissing sound. The sound is coming from the thing that's next to it. I think its some kind of safety valve.

    I would like to replace it but I don't know exactly what its called or where I would get one. Anyone have any ideas?
    73 year old one pipe system with original American standard boiler, oil fired becket, 2 inch steel pipe main, 100 feet long, with 8 radiators above.
  • steam-rookie
    steam-rookie Member Posts: 123
    safety valve?

    anybody know what the replacement of that thing should look like or where to get one?
    73 year old one pipe system with original American standard boiler, oil fired becket, 2 inch steel pipe main, 100 feet long, with 8 radiators above.
  • jpf321
    jpf321 Member Posts: 1,566
    i believe...

    you can replace it with a standard pressure relief safety valve .. bring it in to a plumbing supply houseso they can match the threads .. and maybe it says on there what PSI it's rated for? while you have the valve off and are shopping around for a new one, make sure your boiler is turned off.



    fyi, the new valves are going to be a bit different from that and will require that you pipe it "down to the floor" .. ask the plumbing supply guy to provide the proper pipe lengths and elbow to accomplish this. you also want to measure the distance from the boiler edge to the current valve (1 piece of pipe will need to be a few inches longer than this) and the distance from the current valve to the floor minus about 6inches (the other piece of pipe) + 1 elbow to join the 2 pieces.
    1-pipe Homeowner - Queens, NYC

    NEW: SlantFin Intrepid TR-30 + Tankless + Riello 40-F5 @ 0.85gph | OLD: Fitzgibbons 402 boiler + Beckett "SR" Oil Gun @ 1.75gph

    installed: 0-20oz/si gauge | vaporstat | hour-meter | gortons on all rads | 1pc G#2 + 1pc G#1 on each of 2 mains

    Connected EDR load: 371 sf venting load: 2.95cfm vent capacity: 4.62cfm
    my NEW system pics | my OLD system pics
This discussion has been closed.

Welcome

It looks like you're new here. If you want to get involved, click one of these buttons!