Twin Bilge Pump Plumbing

[warloch77]

2 Issues - 1) check valves WILL clog with whatever trash is in the bildge. It'll work, but once they fail, whenever 1 pump is running, part the water will be diverted back into the bildge. 2) the volume of water when both pumps are running will be too high for 1 discharge hose, so the stronger pump will force backflow into the weaker pump. Go with a second thru-hull.

[warloch77]

dup post.

[endoman]

Yup, like others have mentioned, it's the discharge hose that determines your true pumping capability.

You may only need full pump capability once in your boating life, but you'll be really happy you got it right.

Put in the second outlet and make sure the hoses are the right diameter for your pumps.