bilge pump outlet

[owen]

I am in the process of fitting an electric bilge pump in my m33.I dont want to drill another hole in the hull and was wondering about a T joint onto the closest cockpit drain with a one way valve. any comments/ ideas ??

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[Becky]

I have been through this situation, in that my electric bilge pump was exiting at the waterline, and the bilges filled with seawater whenever the boat heeled. Instead of re-making a more suitably placed hole I took the pipe high under the side deck. And, relevant to you question, I fitted a y-piece to take a pipe from the shower pump as well, but both were fitted with joker non-return valves high enough up to minimise flowback. The system works very well and I haven't had any leaks, so provided that you run your pipes to prevent flowbacks you should have no problems.

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[owen]

thanks for the reply becky.hopefully will sort it this weekend

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[john_morris_uk]

Its not relevant if you don't race or need to comply, but from memory ORC rules forbid bilge pumps discharging into cockpit drain outlets.

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[johnt]

Its a lot easier to put the electric pump onto the end of your normal bilge line and discharge through the manual bilge pump ,....no extra holes and it works perfectly!

and under the rail is the wrong place to put it ....you reduce the output by converting FLOW to LIFT !

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[oldsaltoz]

G'day Owen,

Non return valves can be a problem in a salt water environment, have you considered running the bilge pump line along one side and crossing over to the cockpit drain after a high loop, this will mean that the loop is above the waterline when that outlet is low and still allow bumping with a low head when on the other tack, and best of all, no non return valves to maintain.

I hope this helps.

Avagoodweekend......



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