Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 12-19-2012, 12:39 PM   #1
Member
 
Join Date: Aug 2012
Posts: 118
Rewards Points: 75
Default

Boiler pressure relief valve problem


I had a leaking boiler relief valve. I replaced it with the same brand valve & same pressure relief rating. However the new valve is leaking too. The only different thing I see is that the old valve is rated for 510.000 BTU Hour rating- and the new valve is rated for 550.000 BTU Hour. Can this difference cause the new valve to leak. The pressure setting on both valves is the same at 30 pounds. I hope someone can help me out on this. Can't afford the service call charge for this problem.

Thank you!

maddog1 is offline   Reply With Quote
Old 12-19-2012, 01:21 PM   #2
Master General ReEngineer
 
Bondo's Avatar
 
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 3,683
Rewards Points: 2,000
Default

Boiler pressure relief valve problem


Quote:
Originally Posted by maddog1 View Post
I had a leaking boiler relief valve. I replaced it with the same brand valve & same pressure relief rating. However the new valve is leaking too. The only different thing I see is that the old valve is rated for 510.000 BTU Hour rating- and the new valve is rated for 550.000 BTU Hour. Can this difference cause the new valve to leak. The pressure setting on both valves is the same at 30 pounds. I hope someone can help me out on this. Can't afford the service call charge for this problem.

Thank you!
Ayuh,.... What is the pressure of the boiler,..??

What's the style, 'n condition of it's pressure tank,..??

Bondo is offline   Reply With Quote
The Following User Says Thank You to Bondo For This Useful Post:
maddog1 (12-19-2012)
Old 12-19-2012, 02:41 PM   #3
Member
 
Join Date: Aug 2012
Posts: 118
Rewards Points: 75
Default

Boiler pressure relief valve problem


Hi Bondo
I just posted another thread about my problem. To answer your question, Im thinking it could be the expansion tank? It's a Fil_trol model 110, a small tank. Pre charged pressure is 12 psi. I just put a tire gauge on the air fill valve & it reads 25 psi. I don't know if that's good or bad. How do I check it further.

Also I just got a water pressure gauge. I was going to remove the new pressure valve & install the water pressure gauge & run the system & see how hight the pressure goes. The system right now does not have a gauge installed on it so I don't know how high the pressure is climbing.

I don't see any leaks at all. When the heat shuts off & get some blow off at the vfalve, not much & then it stops. Thanks for asking & for any help you can give me.
maddog1 is offline   Reply With Quote
Old 12-19-2012, 03:27 PM   #4
Member
 
Join Date: Oct 2012
Location: Lansing,MI
Posts: 172
Rewards Points: 152
Default

Boiler pressure relief valve problem


Sounds like bad expansion tank.Did water come out the schrader when pressure was checked?
HVACTECH96 is offline   Reply With Quote
The Following User Says Thank You to HVACTECH96 For This Useful Post:
maddog1 (12-19-2012)
Old 12-19-2012, 03:38 PM   #5
Member
 
Join Date: Aug 2012
Posts: 118
Rewards Points: 75
Default

Boiler pressure relief valve problem


Hi- I'm not sure what a Schrader is? I assume that is the air fill valve on the tank. If so, no water came out.

Here is what I think I need to do.Shut off the water supply & open up a hot water faucet & let the hot water run out. Then bleed off the air pressure in the tank & when the air is out, if I get water out the air fill valve, I would have a bad tank? Is this how you check the tank. Thanks for you help on this. I'm not a plumber but I can help myself a little if I know I'm going the right way.
maddog1 is offline   Reply With Quote
Old 12-19-2012, 04:01 PM   #6
Master General ReEngineer
 
Bondo's Avatar
 
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 3,683
Rewards Points: 2,000
Default

Boiler pressure relief valve problem


Quote:
Originally Posted by maddog1 View Post
Hi- I'm not sure what a Schrader is? I assume that is the air fill valve on the tank. If so, no water came out.

Here is what I think I need to do.Shut off the water supply & open up a hot water faucet & let the hot water run out. Then bleed off the air pressure in the tank & when the air is out, if I get water out the air fill valve, I would have a bad tank? Is this how you check the tank. Thanks for you help on this. I'm not a plumber but I can help myself a little if I know I'm going the right way.
Ayuh,... It's a tire blow-up fittin'....

Before ya go messin' with the tank,... or plumbin' another gauge,..
Doesn't yer boiler have a tridicator gauge, with temp, 'n pressure showin' on it,..??
If it don't, it oughta...
Way better than what yer schemin'....

Ya never let the air outa the tank, it's a bladder tank, 'n is pre-charged to 12psi, the normal pressure used in most boilers...

How's the Auto-fill valve lookin', 'n actin',..??
Bondo is offline   Reply With Quote
The Following User Says Thank You to Bondo For This Useful Post:
maddog1 (12-19-2012)
Old 12-19-2012, 04:53 PM   #7
Member
 
Join Date: Aug 2012
Posts: 118
Rewards Points: 75
Default

Boiler pressure relief valve problem


Bondo- There is a gauge on the front of the boiler sheetmetal. But I need to go take a look at it. I know it shows temp. but I need to see if it also shows pressure.

The fill valve appears to be in good shape. It's one of those single lever ball valve type. I see no leaks or corroison on it. It works smooth, closes and opens nice. I will go take a look at that gauge now & then post what I find here. be back in a few minutes with another post. Than you!
maddog1 is offline   Reply With Quote
Old 12-19-2012, 05:07 PM   #8
Member
 
Join Date: Aug 2012
Posts: 118
Rewards Points: 75
Default

Boiler pressure relief valve problem


Bondo- I just took a look at the gauge on the front of the boiler. Right now it is showing a temperature of 150 degrees and a pressure reading of 38 psi. The relief valve is a 30 psi rating.

Bondo- what does this tell you? I can't see where the gauge is actually attached because only the face of the gauge sticks out of the sheet metal. I always thought that the gauge was reading the temp & presure of the Hot water coil. Thanks
maddog1 is offline   Reply With Quote
Old 12-19-2012, 05:17 PM   #9
Master General ReEngineer
 
Bondo's Avatar
 
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 3,683
Rewards Points: 2,000
Default

Boiler pressure relief valve problem


Quote:
Originally Posted by maddog1 View Post
Bondo- I just took a look at the gauge on the front of the boiler. Right now it is showing a temperature of 150 degrees and a pressure reading of 38 psi. The relief valve is a 30 psi rating.

Bondo- what does this tell you? I can't see where the gauge is actually attached because only the face of the gauge sticks out of the sheet metal. I always thought that the gauge was reading the temp & presure of the Hot water coil. Thanks
Ok,... Need a picture of yer auto-fill,... 1/4 turn ball valve ain't it,...
more likely a red bell-shaped thingy...
'n you should have a ball valve, 'tween yer domestic water, 'n the bell-shaped thingy...

The auto-fill should only allow 'bout 12 psi into the system,...
Drain some water outa the bottom of the boiler, 'n watch the gauge, drop it to 'bout 10/ 12/ 15 psi...

That gauge screws into the block/water jacket, usually above/ near the firebox...
Cold, aka; room temp, it should show room temp, 'n 12 psi...
It'll show the current temp of the boiler, 'n maybe reach up to 15 psi, or so, when at full heat...

I'm guessin' the auto-fill, ain't auto-fillin' right...

Last edited by Bondo; 12-19-2012 at 05:21 PM.
Bondo is offline   Reply With Quote
Old 12-19-2012, 05:40 PM   #10
Member
 
Join Date: Aug 2012
Posts: 118
Rewards Points: 75
Default

Boiler pressure relief valve problem


Bondo- I don't see anything like how your describing it. OK- I will get a picture or two of what I have & get them to you. This will take me a few, but I will get it done for you. After you see what I have, then we can do the water out the boiler. I will try my best. I hope you will be here a little later from now. I'm on my way now to take pictures for you. Thanks
maddog1 is offline   Reply With Quote
Old 12-19-2012, 06:05 PM   #11
Member
 
Join Date: Aug 2012
Posts: 118
Rewards Points: 75
Default

Boiler pressure relief valve problem


Bondo- Here are some photos. Hope they come in OK. They show what I have. This system is getting old. Went in new about twenty five years ago. So it could be way different today. Thanks. Got my fingers crossed on the photos. Not too good at this computer stuff.
Attached Thumbnails
Boiler pressure relief valve problem-100_6149.jpg   Boiler pressure relief valve problem-100_6150.jpg   Boiler pressure relief valve problem-100_6143.jpg   Boiler pressure relief valve problem-100_6151.jpg   Boiler pressure relief valve problem-100_6148.jpg  

Boiler pressure relief valve problem-100_6146.jpg  
maddog1 is offline   Reply With Quote
Old 12-19-2012, 06:20 PM   #12
Member
 
Join Date: Aug 2012
Posts: 118
Rewards Points: 75
Default

Boiler pressure relief valve problem


Bondo- Im assuming that what you mean by the Auto-Fill is that large rectangular body sitting directly above the expansion tank. If so that thing is plumbed on both ends into what looks like a one inch line on both ends. It is threaded onto the tube fittings, but the male threaded ends are sweated into place.

Attached by 1/2 inch pipe there is another much smaller rectangular valve that is threaded into the top of the expansion tank. Could that valve be at fault. I looked up a diagram of the part & it has a filter screen inside it as well as other parts that regulate water & whatever else. Don't fully understand how the parts work. Please let me know if you need more photos. I'm hopeing the problem is not that large body valve plumbed into the one inch lines. If so then I will need to call in my burner service to change it out. I don't have a tourch that will handle a one inch sweat joint & I've never had good luck with sweating lines that had moisture in them. Thanks Bondo. Will wait to hear back from you for my next move.
maddog1 is offline   Reply With Quote
Old 12-19-2012, 06:38 PM   #13
Member
 
Join Date: Aug 2012
Posts: 118
Rewards Points: 75
Default

Boiler pressure relief valve problem


Bondo- Where is Chaumont River, NY. Don't have a map right now. Sounds like western, NY. Im in the lower hudson river valley in Orange county, NY Bout 1/2 half hour from Bear Mountain & west point. Closest big area is Middletown, NY. Im only 10 minutes from the NJ border & about twenty to the Pa border. You can say we got it all down here including the Tapan Zee bridge which IS NOT ready to fall down, but it sounds good to say it so they can gouge more moeny out of us.

Maddog
maddog1 is offline   Reply With Quote
Old 12-19-2012, 06:44 PM   #14
Master General ReEngineer
 
Bondo's Avatar
 
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 3,683
Rewards Points: 2,000
Default

Boiler pressure relief valve problem


Ayuh,... Ok, in the 3rd picture, of the tank. 'n the cast iron box, 'n there's a green handled ball valve, that's open...

Where does it come from,..??
If it's line pressure, domestic water supply, the pressure is Way to high...
Shut the valve Off, 'n bleed the drain valve on the boiler to lower the pressure to 'bout 15 psi...

Donno how it coulda ever worked Right, that way...
Quote:
Im assuming that what you mean by the Auto-Fill is that large rectangular body sitting directly above the expansion tank. If so that thing is plumbed on both ends into what looks like a one inch line on both ends. It is threaded onto the tube fittings, but the male threaded ends are sweated into place.
Nope, that's just an expansion chamber to knock air outa the system, 'n the auto-bleed is the brass lookin' thing on top...
Is the rust from leakin' threads, 'n just sputter from the auto-bleeder,..??
Quote:
Attached by 1/2 inch pipe there is another much smaller rectangular valve that is threaded into the top of the expansion tank. Could that valve be at fault.
I doubt it...

Gotta get a handle on the feed water,...
Where's that ball valve in pic #3 line come from...
That's where the auto-fill valve set to 12 psi oughta be...
Bondo is offline   Reply With Quote
The Following User Says Thank You to Bondo For This Useful Post:
maddog1 (12-19-2012)
Old 12-19-2012, 06:47 PM   #15
Master General ReEngineer
 
Bondo's Avatar
 
Join Date: Dec 2007
Location: Chaumont River, Ny.
Posts: 3,683
Rewards Points: 2,000
Default

Boiler pressure relief valve problem


Quote:
Originally Posted by maddog1 View Post
Bondo- Where is Chaumont River, NY. Don't have a map right now. Sounds like western, NY. Im in the lower hudson river valley in Orange county, NY Bout 1/2 half hour from Bear Mountain & west point. Closest big area is Middletown, NY. Im only 10 minutes from the NJ border & about twenty to the Pa border. You can say we got it all down here including the Tapan Zee bridge which IS NOT ready to fall down, but it sounds good to say it so they can gouge more moeny out of us.

Maddog
Ayuh,.... Google it,.... I can danm near throw a rock into Canaduh...

I'm actually sittin' just outside Watertown, my 2 river houses are where the Chaumont River, turns into Chaumont Bay...


Last edited by Bondo; 12-19-2012 at 06:49 PM.
Bondo is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pressure Relief Valve Leaking new_DIY Plumbing 10 10-04-2012 10:24 PM
TPR valve leaking - closed system? Hidden check valve? Pressure mystery dustout Plumbing 0 09-23-2012 05:36 PM
pressure relief valve leaks f9 flier Plumbing 21 06-14-2011 06:55 PM
Boiler pressure troubles jduffett HVAC 2 12-12-2010 07:15 AM
Boiler Relief Problem dgr68 HVAC 62 12-11-2010 10:41 AM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.