Holding tank pump out design options. - Page 2 - SailNet Community
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post #11 of 20 Old 03-19-2010
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Listen to WWilson. We just replaced our head, hoses, holding tank (24 Gal), y valve, mascerator,vent hoses, and deck pump out. It too is located under the V berth.

I suggest not only running two vent hoses, but we have a brass ball valve (11/2" connected directly to the 11/2" discharge fitting at the bottom of the tank. After that is a length of hose...the Y valve split, one to the mascerator then thru hull, the other to the deck fitting for the pump out. The purpose of the 11/2" brass ball valve is to keep it closed until ready to pump out, thus preventing the waste in the tank from filling up the lower hose and sitting in it until you pump out. Also use a very good hose..its worth it. We used trident 101.

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post #12 of 20 Old 03-19-2010
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If you're keeping score count me in the THAT'S A BAD IDEA category. I vote no to the coiled pumpout hose out the hatch. Trust me, if you do it... it won't be long until you're re-doing it.

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post #13 of 20 Old 03-20-2010
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Is there a locker at the front of the V-Berth? The line to the deck could run up forward of the V-Berth and to a fitting on the deck at the bow; hidden by the forward locker.

I don't recommend putting the holding tank beneath the v-berth; but if that's the only location that works, it would be OK. The odor from a holding tank can permeate the plastic of the tank over time; which could be bothersome in a sleeping compartment.
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post #14 of 20 Old 03-20-2010
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Sorry, but plastic tanks don't permeate. It is the hoses that permeate, and the better ones, like Trident 102, don't even do that anymore.
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Is there a locker at the front of the V-Berth? The line to the deck could run up forward of the V-Berth and to a fitting on the deck at the bow; hidden by the forward locker.

I don't recommend putting the holding tank beneath the v-berth; but if that's the only location that works, it would be OK. The odor from a holding tank can permeate the plastic of the tank over time; which could be bothersome in a sleeping compartment.

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post #15 of 20 Old 03-22-2010 Thread Starter
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I do have an anchor well and am going to look at bringing the hose up through or beside that or just up the bulkhead. With all your help have decided against a movable hose. It was a good idea if I didn't think about it to hard. lol
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post #16 of 20 Old 10-19-2010
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Any thougths on placing the holding tank pump out fitting through the bulkhead instead of the deck?
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post #17 of 20 Old 10-19-2010
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Considering the contents, you want gravity working with you on a pump out. If through the bulkhead means a vertical fitting arrangement - you will need a mop with it as well.

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post #18 of 20 Old 10-19-2010
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Second what Wwilson said... pumpout deck fittings should be flat, so that any dripping is minimized.

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I installed the tank at the beginning of the summer and with a few books and advice from this site it has worked perfectly with no smell at all yet.
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I installed the tank at the beginning of the summer and with a few books and advice from this site it has worked perfectly with no smell at all yet.
Always good to hear that it turned out well.

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her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

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