Avon dinghy A7 valves

[yanay]

As you can see from post 13, I did mine a few years ago. They are still fine after a great deal of use. I would try, carefully, going in-between the docs and the material with a thin blade, then try twisting the disc. From memory, there may be a white sealing washer somewhere, possiblity under the disc. There shouldn't be any glue or sealer on any part of the valve but it depends on what has happened in the past. The material is really robust.
Allan

Indeed there should not be any glue between the valve and the housing. I tried with all my force, so far no movement but twisting may do it. I don't think a thin blade will fit there between the valve and the housing as the approach should be horizontal and there is no clearance. Would any solvent soften the connection between the two without damaging any of the materials? How did you eventually separated them?

 

[Allan]

Indeed there should not be any glue between the valve and the housing. I tried with all my force, so far no movement but twisting may do it. I don't think a thin blade will fit there between the valve and the housing as the approach should be horizontal and there is no clearance. Would any solvent soften the connection between the two without damaging any of the materials? How did you eventually separated them?

I only have a vague thought about how I went about it, so please be very careful.
On my inflatable I only had a problem with one valve, which meant if I blew up that section and, very quickly, got the cap screwed on. I could then inflate the other section and the boat was rigid enough. If you're relying on your tender that may be the way to continue.
If you decide to carry on with the repair, I meant put a thin knife carefully between the pressure ring and what is called the buoyancy fabric on your drawing. The knife should be horizontal. This is in case someone has put sealer under the pressure ring. Getting some WD40 or similar under there may help also. I hope it helps
Allan

 

[yanay]

That exactly been my solution for the past year, inflate and cap it fast. It works. Not sure what in the drawing is the gray-white disk in my image . It should not be attached to the valve housing. Could be the sealant is on the inside. Between the housing top, in image A threre are two creased rings , and the tube.

 

[Allan]

I think the grey/white bit is the pressure ring which bears down on the top doubling ring. There should be something on the internet to show you whether it screws on or just pushes on.
Allan