One way valves

[Channel Ribs]

I am after a valve to put in a short section of 1.5in hose, to stop a cockpit from flooding with backwash but allow it to drain easily.

Any ideas for making one up, or a supply of something that would do the job? I have in mind the top of a dry snorkel...

 

[Strathglass]

You can buy marine directional valves which will fit both 1" and 1 1/2" (38mm) pipe.

I do not know the current price of them.

Iain

 

[Oldhand]

Bad idea to put any sort of device in your cockpit drain pipe IMHO. It could stop crud going down the pipe and cause a blockage. Any crud would make a non return valve leak anyway.

 

[Channel Ribs]

[ QUOTE ]
Any crud would make a non return valve leak anyway.

[/ QUOTE ]

Maybe a flap or elephant trunk, like they use to drain RIBs?

 

[Freebee]

A swing check valve would do it!

 

[Talbot]

either a flat plate flap over the end, or use flat hose attached to the end.

 

[bigwow]

My cockpit drains go straight down through the bridgedeck, we always get new lady sailors to stand over one when it's a bit lumpy, great sport! It would spoil everyones fun if I put flaps over them.

 

[Shanty]

Been trying to find a solution to this problem for a while now.

I've tried the flap type non-return valves that Whale make - don't work, probably because there isn't enough head to seal them properly.

I think you may be right in loking for a snorkel type valve,. However, all the examples I have found so far have been far too big and heavy. Looks like a DIY job.

 

[Talbot]

I use emergency petrol caps - a rubber bung that just pushes over the hole allowing some water to pass through. stops the spurt up the trouser leg!

 

[bigwow]

My cockpit drains are shower drains so there is no large hole as such, we sometimes upturn a bucket over them, but usually just let them rip

 

[Channel Ribs]

[ QUOTE ]
A swing check valve would do it!

[/ QUOTE ]

Ah, but are they cheap?

 

[rogerthebodger]

Have a look at a transom scupper like these

 

[philip_stevens]

The type that are fitted to Westerly Konsort Duos to keep water out of the under-cockpit space, is a SWING CHECK VALVE 1-1/2 in. BSP FEMALE GM from ASAP-Supplies, part number 406747.

They are not cheap.

The gas locker is supposedly to drain any leaks out of this water drain. It is usually full of water. So much so, that I sealed the gas locker and made a now drain out of the stern.

 

[Robin]

Im voting with those that say don't because when you want it to drain it needs to do it fast.

We have 2 large 3" dia straight through drains which exit below the transom at above the stationary waterline. We only have a problem when at anchor, when some inconsiderate prat goes by with maximum wash and the resulting jets can spray saltwater the length of the cockpit. The solution for us is two of those ladies bath frilly ball things one pushed in each drain when we are at risk, we have a loose line between them so both can be pulled out rapidly but in any case rainwater gets through anyway. Simple solution, ours cost 50p ea from Tesco.