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09-30-2013, 04:56 PM
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#1
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2 Rivet Member
1977 31' Sovereign
1976 31' Sovereign
Boonsboro
, Maryland
Join Date: Apr 2009
Posts: 33
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hose clamp connection leaking
OK,
just spent two weeks tearing out, repairing and am currently putting the bathroom back together in a 1977 Sovereign. Replaced the Thetford valve on the Blackwater tank and put it back in place- unfortunately without checking the integrity of the hose clamp connection between the valve and the tank. Realized it today and put water in to test- of course it leaks..
I already have the bumper back on, the floor down and the tub back in place- anyone have any pearls of wisdom??
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09-30-2013, 06:07 PM
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#2
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Rivet Master
2006 23' Safari SE
Biloxi
, Mississippi
Join Date: Nov 2011
Posts: 8,278
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Just a stab here, but I would say pull it apart and tighten the hose clamp.
__________________
MICHAEL
Do you know what a learning experience is? A learning experience is one of those things that says "You know that thing that you just did? Don't do that."
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09-30-2013, 07:45 PM
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#3
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2 Rivet Member
1977 31' Sovereign
1976 31' Sovereign
Boonsboro
, Maryland
Join Date: Apr 2009
Posts: 33
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Thanks Michael,
I still have some access from above. I did tighten ot down a little further and will put another clamp next to the existing as soon as I get to the hardware store..
Greg
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09-30-2013, 08:22 PM
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#4
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3 Rivet Member
2014 25' FB Flying Cloud
Palestine
, Texas
Join Date: Jul 2013
Posts: 106
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Old boater experience: Suggest you loosen the hose clamp and ensure the hose is properly positioned. Next, add a second clamp with the adjustment screw 180 degrees around from the one on the first clamp. Probably belt and suspenders, but I don't like leaky connections, especially if they are difficult to access.
__________________
Will ~ "Blue Skies"
WBCCI #31443
"Don't follow me.
I've spent my life leading folks astray."
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10-01-2013, 05:54 AM
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#5
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Figment of My Imagination
2012 Interstate Coach
From All Over
, More Than Anywhere Else
Join Date: Dec 2011
Posts: 10,868
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Quote:
Originally Posted by Will_Brule
Old boater experience: Suggest you loosen the hose clamp and ensure the hose is properly positioned. Next, add a second clamp with the adjustment screw 180 degrees around from the one on the first clamp. Probably belt and suspenders, but I don't like leaky connections, especially if they are difficult to access.
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Second clamp only works if the hose barb on the valve is long enough for two hose clamps, which is not a foregone conclusion in an RV.
__________________
I thought getting old would take longer!
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10-01-2013, 07:58 AM
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#6
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2 Rivet Member
1977 31' Sovereign
1976 31' Sovereign
Boonsboro
, Maryland
Join Date: Apr 2009
Posts: 33
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Thanks folks, will update you as to the status of the leak when I get the second clamp on...
Greg
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10-01-2013, 12:10 PM
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#7
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Wise Elder
2010 30' Classic
Vintage Kin Owner
South of the river
, Minnesota
Join Date: Dec 2009
Posts: 4,169
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Good luck with that.
The thin walled spiral reinforced hoses are prone to leakage. Sometimes a special clamp will help e.g.:
Spiral Hose Clamps
However even those are not a guarantee especially if the barb is not an exact fit.
You may need to try another type of hose.
__________________
To learn to see below the surface, you must adjust your altitude
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10-03-2013, 07:11 PM
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#8
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2 Rivet Member
1977 31' Sovereign
1976 31' Sovereign
Boonsboro
, Maryland
Join Date: Apr 2009
Posts: 33
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So I got the second clamp on and am down to a very very small amount of leakage. Will probably have to do...
Thanks again to all who helped!
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10-03-2013, 07:40 PM
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#9
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3 Rivet Member
2014 25' FB Flying Cloud
Palestine
, Texas
Join Date: Jul 2013
Posts: 106
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Sounds like Jammer may have the right idea. Barb size and hose size may not match. Is the barb metal or plastic? A deformed or damaged barb will almost always leak, no matter what Yoyo with the clamps.
__________________
Will ~ "Blue Skies"
WBCCI #31443
"Don't follow me.
I've spent my life leading folks astray."
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10-04-2013, 06:09 AM
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#10
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2 Rivet Member
1977 31' Sovereign
1976 31' Sovereign
Boonsboro
, Maryland
Join Date: Apr 2009
Posts: 33
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Just to clarify, this is where the LDPE (relatively soft plastic) black water tank clamps onto the Thetford valve mount which is a hard plastic and smooth. (no barbs). If it had barbs this would probably not have been a problem..
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10-04-2013, 06:12 AM
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#11
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2 Rivet Member
1977 31' Sovereign
1976 31' Sovereign
Boonsboro
, Maryland
Join Date: Apr 2009
Posts: 33
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Oh, I forgot to add- the mount is new, the tank is old, but I did clean out the neck pretty dilligently before reassembly.
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10-04-2013, 08:06 AM
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#12
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Rivet Master
1977 Argosy 24
Currently Looking...
Milltown
, Wisconsin
Join Date: Mar 2006
Posts: 1,087
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When I put mine together I smeared Vulkem all around the inside of the tank outlet, and outside of the valve fitting first. It has never leaked. I also used a heat gun on the tank outlet to soften it up before I tightened the clamp.
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10-06-2013, 05:52 PM
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#13
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2 Rivet Member
1977 31' Sovereign
1976 31' Sovereign
Boonsboro
, Maryland
Join Date: Apr 2009
Posts: 33
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Thanks, sounds like you have a very tight (and likely permanent) connection!
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10-07-2013, 06:29 AM
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#14
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Rivet Master
1977 Argosy 24
Currently Looking...
Milltown
, Wisconsin
Join Date: Mar 2006
Posts: 1,087
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Quote:
Originally Posted by mnboy1960
Thanks, sounds like you have a very tight (and likely permanent) connection!
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Actually I had to take it apart about a month after I put it together, not because it was leaking. I just used the heat gun again on the tank neck, and it came apart very easily.
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