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Old 07-01-2009   #1
Boise, Idaho
Join Date: Apr 2009
Posts: 32
Valve repair or replacement.

I've got an old Miwok raft. After two months of patching, and finally re-covering many spots with Flexane, I had the tubes holding air. Then the latest problem cropped up. The glue around the valve boots is failing. This is not particuilarly shocking, the raft is at least 30 years old, but it is irritating. The question is how to repair?

I've already tried regluing just the spots where they've failed. It's difficult to clean the area (these failures, on two tubes, involve about 1" sections of the surrounding patch peeling away from the valve boot), more difficult to get glue in, even more difficult to keep the pieces separated while the glue cures, and the end result is a crappy glue job that fails under pressure.

So I figure I've got two options: (1) remove the valve boots and either clean everything up and reglue or replace and reglue (if I'm going to this much trouble I guess I'd want new boots and valves anyway); (2) install some kind of "donut" patch that covers the old work with some fresh glue and hypalon. The problem with the donut patch is that it would need to fold over the edge of and go inside the boot, since this is the only place there is visible boot to glue to.

If it matters, the valves are the old Military style. They are worn, but still seem to operate just fine.

Any ideas or advice appreciated.

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Old 07-01-2009   #2
shappattack's Avatar
Up North, Oregon
Paddling Since: 1985
Join Date: Jul 2008
Posts: 1,150
Treating with Inflatable Boat Sealant may buy you some time (stuff you squirt into the tubes that coats the inside with a film rated to 90 psi. I did this on an older glued boat that was starting to have seam and valve boot leaks and it worked (for awhile). If you are going to take off the valve boots, you might as well replace them with some new ones. At some point in the not to distant future you are going to be getting a newer boat.

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Old 07-01-2009   #3
Cisco, Utah
Paddling Since: Dawn
Join Date: Sep 2007
Posts: 351
Replace the Boat.... er, um, boot..
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Old 07-03-2009   #4
whip's Avatar
Salida, Colorado
Join Date: Oct 2003
Posts: 516
I would be able to find this sealant where? Suitable for hypalon?
No amount of money is worth your free time!
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