Pressure showing and radiator leaking in cold steam system

Reply

  #1  
Old 07-18-19, 01:44 PM
Member
Thread Starter
Join Date: Jul 2019
Posts: 1
Pressure showing and radiator leaking in cold steam system

I just noticed a dripping from the air vent on one of our one-pipe steam radiators. I checked the boiler, which has not run in about 6 weeks and it was showing 1.5 psi pressure. I let out water until it dropped to no pressure. Is there water in the pipe system? Why would this be? The glass water gauge appears to be full -- but we have trouble with it clogging...just replaced it this year...I cannot find any water entering the system. Boiler emergency steam release valve has not deployed....any ideas?

Update: let more water out and now showing in glass tube. There was a tremendous amount of extra water in this system. Autofill is disabled. When we filled this winter, it was showing at proper level. Late in winter, we noticed pressure was building to a 3 or 4. It has always run 1.5 or 2, so we shut it down to replace this summer with a new one (did not want to pour more money into this one)...can someone connect these dots for me? Thank you for any help!
 

Last edited by rclark7; 07-18-19 at 02:48 PM. Reason: updates
Sponsored Links
  #2  
Old 07-18-19, 03:00 PM
Member
Join Date: Oct 2008
Location: USA
Posts: 2,862
Upvotes Received: 5
6 ft of static hydraulic head above the gage would give 3 psi.
 
  #3  
Old 07-18-19, 07:04 PM
lawrosa's Avatar
Super Moderator
Join Date: Dec 2010
Location: Galivants Ferry SC USA
Posts: 17,752
Upvotes Received: 3
6 ft of static hydraulic head above the gage would give 3 psi.
How does that help the OP. Dont answer at all then..

Not enough info but,

OP how is the hot water heater in the home? tankless coil in the boiler? Or seperate heater?

Auto fill is disabled? How so? There should be a valve to shut the water completely off..

If often a condensate return issue and auto fill problem..Auto fills even disabled can bleed through when faulty

Explain more and pics help...
 
  #4  
Old 07-19-19, 06:33 PM
rbeck's Avatar
Member
Join Date: Jul 2007
Location: Pennsylvania
Posts: 2,444
Upvotes Received: 1
If you have a manual fill valve with a washer in it the washer could be hard or bad.
 
  #5  
Old 07-20-19, 08:15 AM
Member
Join Date: Oct 2013
Location: United States
Posts: 2,698
Upvotes Received: 11
RC,
First off that is a steam pressure gauge you have and not water so the water content in the boiler should not effect the gauge reading. With the boiler off it should be 0 no matter how much water is in the system. If your system is over filling you have a cold water valve leaking by somewhere, either your manual fill valve or your auto feed valve.

A good place to start is by answering larosa's questions and posting some picks if possible. If you are not using your boiler for domestic hot water, disconnect it from cold water feed sources if you have unions and drain to proper level, about 1/2 the sight glass for now and let it stand and see what happens.

Hope this helps a little.
 
  #6  
Old 07-20-19, 07:08 PM
rbeck's Avatar
Member
Join Date: Jul 2007
Location: Pennsylvania
Posts: 2,444
Upvotes Received: 1
The gage will show water pressure if the boiler is overfilled into the system. Every 2.33 ft feet the water is above the gage you will see 1 psi. if the water is 16 feet above the gage you should read about 7 PSI. The gage reads water or steam pressure. Pressure is pressure.
 
Reply

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
Display Modes