bernard
23 Jan 2024
Pac Cup Preparation

The boat already has 2 hoses going out from the bilge: one for the deck-mounted pump (sucking in water) and one for the always-on electric bilge pump (pushing water out). 

I am trying to meet SER 2.5.2 Dewatering pumps. The ideal solution would be to install yet another hose going to yet another hole in the hull. I am not too excited about that solution.

The alternative solution is to use the electric pump evacuation hose and add a diverter valve to select either the pump meeting SER 2.5.2 or the electric bilge pump. Obviously in normal circumstances the diverter would serve the electric pump. I am also planning to add instructions to clearly indicate that the valve must be turned to use the manual pump.

Will this pass inspection?

Comments

tmrsailing Thu, 01/25/2024 - 09:18

There may be an instance where you'd want to have the electric bilge pump and the 2nd manual bilge pump working simultaneously - your design would prevent this.  If you design your system so that the output hose for the 2nd manual bilge pump connects to the deck mounted output hose after the deck pump (just a "Y" connector with check valves on either side) you would be able to do what you want without having to put another hole in the hull or require any instructions to switch a valve (there won't be one).  This would pass inspection.

bernard Tue, 01/30/2024 - 16:15

Thanks for the input. Putting a Y after the deck pump would be the same as running a 3rd hose from the bilge. I would only save a hole in the hull (not negligeable!).  I think I will follow your suggestion and do the same thing but just after the electric pump. The manual pump already has a check valve. I will need to check if the electric pump has one or not and eventually add one if needed.

tmrsailing Tue, 01/30/2024 - 18:41

That 3rd hose can be coiled up in a locker near the y when not in use.  When needed uncoil and attach to the 2nd manual bilge pump.  No need to run it behind/through things.  Again you ideally want to be able to use both the electric and manual pump at the same time.  A single hose likely won't be able to handle the outflow from both.

Webmaster Wed, 01/31/2024 - 11:51

Tracy, in Comment 3, has it right. A coiled hose that can be tossed out a porthole will do the trick.  OR you can add a Y just before the through-hull, which is how my old Passport was plumbed.

tony_english Wed, 01/31/2024 - 14:41

Maybe I wasn't clear earlier. Do yo have a cockpit mount pump with it's own discharge?

If so all you would need to do is add a Y-valve to your head intake with sufficient hose to reack your bilge. The discarge doesn't have to change as you are allowed to discharge direclty overboard at sea. So your head would become your second manual pump with the suction off the Y-valve from the bilge and discharging through the standard outlet would would become you second manual pump.