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*STOP PRESS* Coronavirus. A lot of Clubs have already cancelled all activities. Check carefully before you plan any travel

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CANCELLED because of coronavirus. Papplewick Pumping Station, Nottingham, Sunday 12th & Monday 13th April
CANCELLED because of coronavirus. Bournville Sub Day, Sunday 10th May 2020

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Submarine, Boating & Sailing Weekend, Norwich MBC, Weekend of 25,26th July

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Model Boat Convention, Haydock Park (Cancelled this year)

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Bournville Sub Day, Sunday 13th September

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Club Submarine Regatta, Furness MBC, Barrow in Furness, Sunday 20th Sept 2020

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Looking for ideas on making a flood valve. EmptySat Jul 11, 2020 9:34 pm by timgarrod

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    Looking for ideas on making a flood valve.

    redboat219
    redboat219
    redboat219
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    Posts : 15
    Join date : 2013-08-20
    • Post n°1

    Looking for ideas on making a flood valve. Empty Looking for ideas on making a flood valve.

    Post  redboat219 on Tue Sep 15, 2015 2:06 am

    In Norbert Bruggen's book Model Submarine Technologies he discussed a ballast system called the Aspirated Pump Ballast System where there's an open vented ballast tank with a flood valve in the bottom. To dive the flood valve is opened letting water in and air out the vent tube. To surface the flood valve is closed and a pump empties the tank. The tip of the vent tube should brwak the surface to let air in or else water will reennter the tank.  In the article he even included a photo of a  combined flood valve/pump switch.

    Now I'm looking for fresh ideas on making my own flood valve.
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