SailNet Community - View Single Post - Bilge pump non return valve.
View Single Post
Old 11-13-2012
Maine Sail's Avatar
Maine Sail Maine Sail is offline
Senior Member
Join Date: Jan 2003
Location: Maine Coast
Posts: 5,745
Thanks: 17
Thanked 186 Times in 145 Posts
Rep Power: 16
Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice Maine Sail is just really nice
Re: Bilge pump non return valve.

Originally Posted by MastUndSchotbruch View Post
I experimented a bit with a check valve (NOT on a boat, actually, long story...). My experience was exactly what you describe, it got stuck in the 'closed' state at the drop of a hat.

BUT: I had never thought of doing what Hartley suggests:

"install it high up near the discharge point - not in the bilge with the pump itself"

In that case, you do NOT have the water column keeping the valve stuck in closed. That seems to me the smart way to do it (why didn't I think of that?).

Next time I have a chance, I will try that on my installation.
But that pretty much defeats the entire purpose of the check valve. A siphon break is still a choice that won't stick closed. If you are not preventing hose drain back then there is little point for a check valve...... Bilge pump hoses should always be installed to prevent back siphoning which includes a high loop and a siphon break....
-Maine Sail / CS-36T

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

© Images In Posts Property of Compass Marine Inc.

Reply With Quote Share with Facebook