Taco Air Vent Leaking

Stoker Coal Boilers automatically feed the coal and have controls and pumps just like any conventions boiler. They are intended to be used as a primary heat and often have domestic hot water coils as an added bonus. They can be set up independently or in dual sytem with your existing oil/gas boiler. They can accommodate both hot water base board or steam plumbing.
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lsayre
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Posts: 12222
Joined: Wed. Nov. 23, 2005 9:17 pm
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)
Location: N/E Ohio, between Medina and Wadsworth

Post Fri. Apr. 19, 2013 8:32 pm

The air vent riding above my boilers air separator and expansion tank has suddenly begun to leak water from the air bleed, and I have shut if off (screwed it down tight). Any ideas as to why this might happen?
-Larry

Democracy rests upon the principle that collective wisdom arises from a pool of individual ignorance. A Republic rests squarely upon objective law, and fundamentally upon those laws which restrict the scope and actions of government.

bksaun
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Posts: 966
Joined: Sat. Oct. 28, 2006 9:24 am
Stoker Coal Boiler: Hybrid, Gentleman Janitor GJ-6RSU/ EFM 700
Hand Fed Coal Stove: Hitzer 503
Coal Size/Type: Pea Stoker/Bit, Pea or Nut Anthracite
Stove/Furnace Make: Hitzer/ EFM-Gentleman Janitor
Stove/Furnace Model: 503 Insert/ 700/GJ-62
Location: Hustonville, Ky

Post Fri. Apr. 19, 2013 8:43 pm

Most likely it has a piece of dirt or rust scale under the seat, or the seat is worn out depending on the age and how often it opens. On mine they can be taken apart and cleaned, if that wont work they are not terribly expensive and easy to replace.

Bk
"Corn Stoves", It is morally wrong to burn something you can make into Whiskey!

BK

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lsayre
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Posts: 12222
Joined: Wed. Nov. 23, 2005 9:17 pm
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)
Location: N/E Ohio, between Medina and Wadsworth

Post Fri. Apr. 19, 2013 9:02 pm

Thanks! I'll pick up a spare before attempting to fix it. The leak is minimal, but persistent.
-Larry

Democracy rests upon the principle that collective wisdom arises from a pool of individual ignorance. A Republic rests squarely upon objective law, and fundamentally upon those laws which restrict the scope and actions of government.

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coalkirk
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Posts: 4679
Joined: Wed. May. 17, 2006 8:12 pm
Stoker Coal Boiler: 1981 EFM DF520
Coal Size/Type: anthracite/rice coal
Location: Forest Hill MD

Post Fri. Apr. 19, 2013 9:57 pm

lsayre wrote:Thanks! I'll pick up a spare before attempting to fix it. The leak is minimal, but persistent.
When you replace it, put a shut off valve between it and the air separator. You will need to repalce it again and it makes it much easier.
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Burning rice coal in a 1981 EFM DF520, nut coal in a hand fired Jotul 507.

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lsayre
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Posts: 12222
Joined: Wed. Nov. 23, 2005 9:17 pm
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)
Location: N/E Ohio, between Medina and Wadsworth

Post Fri. Apr. 19, 2013 10:04 pm

coalkirk wrote:When you replace it, put a shut off valve between it and the air separator. You will need to repalce it again and it makes it much easier.
Excellent advice. Thank you!!!
-Larry

Democracy rests upon the principle that collective wisdom arises from a pool of individual ignorance. A Republic rests squarely upon objective law, and fundamentally upon those laws which restrict the scope and actions of government.

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Freddy
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Posts: 6606
Joined: Fri. Apr. 11, 2008 2:54 pm
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined
Location: Orrington, Maine

Post Sat. Apr. 20, 2013 5:22 am

Unless there's already a shut off under the vent they can be a pain to replace. You need to drop the pressure off the system....or at least let it cool down & prepare to take a shower. It's amazing how much water can floe from a small hole at 18 PSI. When you drop the pressure, you risk letting air into the system & now you must purge each and every zone....unless all zone have valves & you took the time to close them all, then purge the header pipe. But, for sure, spend the extra $2.80 and put a mini valve under the vent...do ALL the vents is there's more than one.
Orrington, Maine
Fred

"If you can't say something nice, don't say anything at all".

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lsayre
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Posts: 12222
Joined: Wed. Nov. 23, 2005 9:17 pm
Stoker Coal Boiler: AHS S130 Coal Gun
Coal Size/Type: Blaschak Anthracite Pea
Other Heating: Resistance Boiler (13.5 KW)
Location: N/E Ohio, between Medina and Wadsworth

Post Sat. Apr. 20, 2013 5:24 am

Freddy wrote:Unless there's already a shut off under the vent they can be a pain to replace. You need to drop the pressure off the system....or at least let it cool down & prepare to take a shower. It's amazing how much water can floe from a small hole at 18 PSI. When you drop the pressure, you risk letting air into the system & now you must purge each and every zone....unless all zone have valves & you took the time to close them all, then purge the header pipe. But, for sure, spend the extra $2.80 and put a mini valve under the vent...do ALL the vents is there's more than one.
I have 3 vents. Only the one is leaking.
-Larry

Democracy rests upon the principle that collective wisdom arises from a pool of individual ignorance. A Republic rests squarely upon objective law, and fundamentally upon those laws which restrict the scope and actions of government.

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blrman07
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Hand Fed Coal Boiler: Bucket a Day
Hand Fed Coal Stove: Vigilant Casting 2310
Coal Size/Type: Pea/Nut/Wood in the VC and anything that will fit in the Bucket a Day. It's not fussy.
Location: Girardville Pa.

Post Sat. Apr. 20, 2013 8:28 am

Replace all three while your at it. Save yourself some aggravation later. If one is leaking the other two can't be far behind!
Rev. Larry
Ashland Pa.

1 John 1:9... If we sin and we confess that sin He is faithful and just and will forgive us and cleanse us from all unrighteousness.

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Freddy
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Posts: 6606
Joined: Fri. Apr. 11, 2008 2:54 pm
Stoker Coal Boiler: Axeman Anderson 130 (pea)
Hot Air Coal Stoker Stove: Reading piece o' junk in the barn (rice)
Coal Size/Type: Pea size, Superior, deep mined
Location: Orrington, Maine

Post Sat. Apr. 20, 2013 9:47 am

blrman07 wrote:Replace all three while your at it.
I wouldn't necessarily do that, but, I most certainly would put a valve under each one. I think I might buy a spare vent for the shelf, but I wouldn't use it til I needed to. Vents are quirky little fellows.... some will go about forever, others seem to leak in a short time.
Orrington, Maine
Fred

"If you can't say something nice, don't say anything at all".

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Rick 386
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Posts: 2474
Joined: Mon. Jan. 28, 2008 4:26 pm
Stoker Coal Boiler: AA 260 heating both sides of twin farmhouse
Hot Air Coal Stoker Stove: LL Hyfire II w/ coaltrol in garage
Coal Size/Type: Pea in AA 260, Rice in LL Hyfire II
Other Heating: Gas fired infared at work
Location: Royersford, Pa
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Post Sat. Apr. 20, 2013 11:11 am

coalkirk wrote: When you replace it, put a shut off valve between it and the air separator. You will need to repalce it again and it makes it much easier.
Freddy wrote:Unless there's already a shut off under the vent they can be a pain to replace. You need to drop the pressure off the system....or at least let it cool down & prepare to take a shower. It's amazing how much water can floe from a small hole at 18 PSI.............
Why weren't these tips posted before ????

Drop the temp and pressure ???? No, I wanted to get a bath with hot water and then attempt to hold my thumb over the hole until that got too hot so I removed my thumb.... you see where this is going...............

Never thought about the little valve.

I think I will be doing that to each vent this summer when I do the rebuild.

Great great advice. That is why I love this forum so much.

Rick
Master of "Trial and Error."

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Rob R.
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Posts: 11351
Joined: Fri. Dec. 28, 2007 4:26 pm
Stoker Coal Boiler: EFM DF520
Hand Fed Coal Stove: Hitzer 50-93
Coal Size/Type: Lehigh Rice
Other Heating: Dad's 1953 EFM Highboy
Location: Chazy, NY

Post Sat. Apr. 20, 2013 1:22 pm

Rick, search Yanche's old posts...he has recommended the isolation valves for a long time and posted picture.

Webstone makes a nice valve/drain setup for an expansion tank.

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Rick 386
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Posts: 2474
Joined: Mon. Jan. 28, 2008 4:26 pm
Stoker Coal Boiler: AA 260 heating both sides of twin farmhouse
Hot Air Coal Stoker Stove: LL Hyfire II w/ coaltrol in garage
Coal Size/Type: Pea in AA 260, Rice in LL Hyfire II
Other Heating: Gas fired infared at work
Location: Royersford, Pa
Contact:

Post Sat. Apr. 20, 2013 4:13 pm

Rob.

I was looking at this as something to use on the bleeders on the radiators. Not for the expansion tank. I already have a valve there.

Here we have bleeders on each and every radiator. Within the past few years, I have replaced every bleeder with "automatic" bleeders. Prior to we still used the old keys to bleed them.

Rick
Master of "Trial and Error."

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