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341 head shower sump / drain pipe

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TyskJohan View Drop Down
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    Posted: 14 May 2019 at 10:14
Hi

Does anyone know how the hose is connected to the shower sump? It's connected to a pump under the bench close to the fridge.

It's not accessible from the underside (in the saloon), so it looks to me like I would have to cut out the sump (it sits in a large dollop of Tec7 it seems) and pull it up with the tube still attached.

...and fix it with a new dollop of Tec7 afterwards.

Has anyone done this? Are there any gotcha's?
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Martin&Rene View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Martin&Rene Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2019 at 00:00
I do not know the answer, but I am interested in why you think you need to replace it.   Whilst I thought I had a problem in that area, thankfully I found another source of the water.
Martin&Rene Hanse 341 Dipper Wheel steering, 3 cabin layout & shallow keel, normally based in Scotland
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Martin&Rene View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Martin&Rene Quote  Post ReplyReply Direct Link To This Post Posted: 17 May 2019 at 17:00
A fuller answer now.  I was concerned about water appearing in the bilge area just in front of the toilet door and my first thoughts were that it had something to do with the shower. pump.  It actually turned out to be water leaking out of the pressure relief valve (PRV) on the calorifier, which on my yacht is mounted in the back lazarette.  The water can seep down under the inner hull moulding underneath the fuel tank and collect in the area just by the door.

The valve can leak when the calorifier is switched on, or the engine run with the water system under pressure.  The expansion of the water from heating causes the pressure to rise and the (PRV) can leak.  The fault is not uncommon.  

A test is to dry the area.  Then whenever you switch the engine on or the water heater on, turn off the water pump and run the hot water tap until no water comes out.  Once the water is hot, you can switch the pump back on.  If this seems to eliminate the water leakage, then it is the PRV.

My solution was to attach a piece of plastic tubing to the PRV and then run it out through a small hole I drilled in the stern shower fitting.  (I have photos somewhere if you want them.)  When I drain the system for the winter, there is always some water in the pipe and this suggests the valve is still leaking slightly, but at least it is not back into the bilges.
Martin&Rene Hanse 341 Dipper Wheel steering, 3 cabin layout & shallow keel, normally based in Scotland
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TyskJohan View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote TyskJohan Quote  Post ReplyReply Direct Link To This Post Posted: 18 May 2019 at 07:33
Yes the water coming from the water heater through the starboard under-bed locker (where there are lots of wires) is well known to me.

But my problem with the shower is that pumping it out does not work so I believe the tube/pipe is blocked. I have checked the pump and filter, and tried with a piece of wire, but could not reach any blockage. I will first try to reverse flush it with land water connected to the pump end, but if that does not work I believe I will have to remove (and then I can just as well replace) the hose. 
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Martin&Rene View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Martin&Rene Quote  Post ReplyReply Direct Link To This Post Posted: 30 June 2019 at 11:26
I am still interested to know what was the problem and how have you managed to solve it.  I just hope I never have the problem.
Martin&Rene Hanse 341 Dipper Wheel steering, 3 cabin layout & shallow keel, normally based in Scotland
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