Graham_Wright
Well-Known Member
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Graham a further point. I didn't understand why you needed four outlets / inlets for waste plus a breather. I had only three holes in my tank, one for waste in, one for waste out and a breather (38mm hose up to a big shell vent emerging under the rubbing strake). My set up uses a couple of diverter valves allowing me to use the pump for our Lavac to pump waste to sea or to tank and then switch the valves to pump out the tank via the seacock when we are sufficiently far offshore. I considered including a shore pump out pipe with the appropriate deck fitting, but dockside pumpout facilities are very few and far between unless you are cruising the Norfolk Broads. In our trip from the River Orwell to the Algarve (Atlantic route) earlier this year, only one marina we visited had this facility.
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I have a diverter from the toilet which allows discharge to sea or to tank.
Likewise with the shower sump, diverter to sea (same through-hull) or to tank. I didn't like the idea of teeing the tank inlets as the consequences of opening the wrong valves could leave the "wrong stuff" in the sump. Both of these inlets feed into the top of the tank.
There is a deck pump-out connection which sucks from the bottom and a macerator which sucks from slightly above the bottom (same through-hull). I can't justify the macerator (and Peggie agrees) but is was a bargain from Beaulieu and perhaps will encourage more frequent use of emptying to sea. As our ultimate destination is French Med, I can't justify the pump-out either as the French seem not to have heard of shore pump-out stations (I am told). At the very least I should be able to satisfy any "local legislation" requirements.
The breather connects to the very top of the tank (and will be horizontal Peggie!). I may even add another (probably smaller diamter breather taken right forward to aid air circulation. Apart from this. all the pipework is 38mm diamter.
Thanks to all for the advice. There are obviously many out there who know what they are talking about. It is up to all of us to sort out the wheat from the chaff!
Graham a further point. I didn't understand why you needed four outlets / inlets for waste plus a breather. I had only three holes in my tank, one for waste in, one for waste out and a breather (38mm hose up to a big shell vent emerging under the rubbing strake). My set up uses a couple of diverter valves allowing me to use the pump for our Lavac to pump waste to sea or to tank and then switch the valves to pump out the tank via the seacock when we are sufficiently far offshore. I considered including a shore pump out pipe with the appropriate deck fitting, but dockside pumpout facilities are very few and far between unless you are cruising the Norfolk Broads. In our trip from the River Orwell to the Algarve (Atlantic route) earlier this year, only one marina we visited had this facility.
[/ QUOTE ]
I have a diverter from the toilet which allows discharge to sea or to tank.
Likewise with the shower sump, diverter to sea (same through-hull) or to tank. I didn't like the idea of teeing the tank inlets as the consequences of opening the wrong valves could leave the "wrong stuff" in the sump. Both of these inlets feed into the top of the tank.
There is a deck pump-out connection which sucks from the bottom and a macerator which sucks from slightly above the bottom (same through-hull). I can't justify the macerator (and Peggie agrees) but is was a bargain from Beaulieu and perhaps will encourage more frequent use of emptying to sea. As our ultimate destination is French Med, I can't justify the pump-out either as the French seem not to have heard of shore pump-out stations (I am told). At the very least I should be able to satisfy any "local legislation" requirements.
The breather connects to the very top of the tank (and will be horizontal Peggie!). I may even add another (probably smaller diamter breather taken right forward to aid air circulation. Apart from this. all the pipework is 38mm diamter.
Thanks to all for the advice. There are obviously many out there who know what they are talking about. It is up to all of us to sort out the wheat from the chaff!