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Urgent Issue: Bilge/Anti-Siphon

13K views 27 replies 12 participants last post by  eherlihy 
If the bilge pump exits via a below-the-waterline through-hull, it needs a seacock on it. If that hose ruptures, you're basically RTF... That would be the first thing I'd recommend doing. Replacing the siphon break would be the second. Don't use a check valve, they're just a RPITA and can cause some serious problems in a bilge pump output line.
 
Ideally, the new through-hull for the bilge pump should be six or more inches above the waterline. IIRC, ABYC doesn't require seacocks for through-hulls more than six inches above the waterline.
 
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