Non return Valve

[Noddy]

Is there some sort of non-return valve on the market to place just inside the drain plug hole on the transom of my rib. It just dawned on me - what happens if the plug gets damaged, detached or lost whilst out on the oggin?
Thanks
Martyn

[Mark Halliday]

Martyn

Hopefully this will not happen when out.
However, you can get assorted tapered rubber and soft wood plugs from the chandlers. Keep some onboard.
Old wine bottle corks and some tape will also work too.

[Nasher]

Martyn

Had a Flatacraft with a ball valve fitted once. Never again.

Smallest amount of much gets stuck in them and they won't seal.

As mark says, good excuse to open a bottle or two.

Nasher

[Noddy]

Thanks for the advice - I do seem to remember that one of my past boats had something like a small hose with a membrane fitted at the end so that water pressure pushed it out when it was draining but the opposite happened if the plug came out?

[Hightower]

Like this.

[Noddy]

Nope - best way I can describe it was like a piece of rubber tubing with a grill at the draining end covered by a piece of material fixed to the centre of the hole(grill) - like a mushroom? Pressure of water from within forced it out whilst water coming in pressed it back against the grill? The reason I know about it was I forgot to put the plug in one day after draining the boat. It saved a disaster when the tide came back in?

[stan_deezy]

Noddy my Flatacraft has the original draining system which simply consists of a flap of hypalon covering the drain on the outside. I keep meaning to photo it for Nos4r2: he has used a similar system with his SR4 and found it worked.

Must admit I was really sceptical that it would work on the Flatacraft but it does!

I'll get around to getting a photo as soon as.....

[yoyo]

maybe this then?? my new 4.5m rib is fitted with two, one at deck level and one deep in the hull.

regards Yoyo.

[Mark Halliday]

YoYo

These are fitted to our 3 club rescue Commandos. They never go out without a bung fitted as well.

[Jon penrith]

Martyn I should think you have a stack of wine corks! My exploding boat had same ones as yo yo recomends.In short time I had these they worked well & are available at red line for abot 3 quid.However on the down side they do tend to melt when your trailer detaches from your car & ploughs into an oncoming car resulting in a fireball.......hopefully you will not encounter this problem.....whats an oggin?