If you go into most any boat dealer or "discount" boat supply store and ask for in-hose or in-line scuppers they will look at you funny, walk to the regular scupper department, look at you funny again, and tell you they have never seen or heard of them.
But if you ask for a "check" valve, they smile and hand you these.
As many know, at rest in a chop the floor drains will allow water in as well as out, so I installed these baby's. (It was HAMMERS idea ;D)
The supply pile.
And the finished product.
I will test em out next Wednesday and Thursday when I sneak off to the coast to scar the lips of some fishy's.
__________________
***************************************
Stay Safe!
Sold - 1984 V-20 Cuddy with a 2003 Johnson 140 hp gas sippin 4-stroke.
1995 Ranger 250C with a 2015 Suzuki 300 hp 4-stroke.