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Originally Posted by Kong
Last year i had the 'inner' valves professionally replaced at great expense but they still leak so its clear the whole unit needs replacing.
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No course through implied warranty or the like? Seems to me that if someone worked on the valves, they should work the way they're supposed to when all's said and done.
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PVC valve doublers - is the floor also made from PVC? Do A7 valves need a specific diameter doubler?
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Big enough for a hole for the valve, with a couple of inches overlap to the tube material for gluing. The hole in the tube needs to be big enough to get the internal valve parts in (in case you hadn't figured that out already.)
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Some sort of glue to help seal the valve into the doubler (overkill?)
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I'd say overkill. Maybe some silicone or polysulfide caulk if you're really anal, but the valve is designed to seal to the fabric as is.
Valve schematic here:
http://www.ribstore.co.uk/cms-assets...inflation-valv
Luck;
jky