|
|
Post by faffer on Nov 21, 2016 19:47:43 GMT
|
|
|
|
Post by Delta9 on Nov 21, 2016 19:51:15 GMT
Why would you want to when you could just get a cassette loo and save yourself the hassle?
|
|
|
|
Post by faffer on Nov 21, 2016 19:53:30 GMT
Why would you want to when you could just get a cassette loo and save yourself the hassle? I dont what hassle it is to do. So what is involved ? |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 21, 2016 20:25:44 GMT
I have a sea toilet going to a holding tank (a lavac). I installed it myself and I made up an automatically filling "cistern" which has a float switch and a 12v solenoid valve. It fills with water from the domestic system via pump.
This arrangement seperates the domestic water from contact with shit when flushing ( which would be a Bad Thing).
Sea toilets rely on drawing water through in order to expel the waste. Cassette toilets work on the "dump through" principle aka gravity.
Jabsco sea toilets have double acting pumps - one for flush water the other for waste transfer.
My setup works very well. I have a pump out machine beside my boat on the mooring which is why I fitted this particular system.
. But. It uses a lot of water so if you were pumping it to a shit suitcase of about 18 litres it ain't going to last long.
And a seal which you can unplug cleanly when you want to empty the case is a bit awkward too.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 21, 2016 21:05:01 GMT
|
|
|
|
Post by faffer on Nov 22, 2016 3:41:24 GMT
Sounds good, i found the tec-tank site last night but to tired to read much so left it, i will read up on your idea tonight. You just know i like to make things  |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 22, 2016 5:52:31 GMT
We are going for the tank and overboard route. The old girl is out and on blocks so I better pull my finger out |
|
|
|
Post by JohnV on Nov 22, 2016 9:25:55 GMT
Whale recommend the larger diameter gulper for black waste pumping, I have found however that if you are using it to empty a black tank full of macerated waste, that the smaller diameter pump is better if there is much "lift" involved. With my system there is a tee connector fitted just below the deck line into the 2" pipe for the pump out deck fitting. running horizontally to the gulper and then out through the side for overboard discharge. (not to be used when starboard side to, either another boat or a jetty  ). If you were trying to pump out the tank when it was below 3/4 full the pump was unable to maintain sufficient vacuum to lift the 2' height required to commence pumping. I decided this was due to the larger one way valves on the large bore pump being more prone to be a crap trap (hee hee) and not maintain vacuum. Once it was pumping liquid it would empty the whole tank efficiently, it was only that initial start that was the problem. After many years I had to do some major work on the system (scale build up in the pipework loo to tank) and at the same time I replaced the pump with the smaller diameter version. This has to have been in action now for about 2 years and will commence a pumpout without a problem, even when there is only a tiny amount of waste in the tank. |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 22, 2016 10:49:51 GMT
Whale recommend the larger diameter gulper for black waste pumping, I have found however that if you are using it to empty a black tank full of macerated waste, that the smaller diameter pump is better if there is much "lift" involved. With my system there is a tee connector fitted just below the deck line into the 2" pipe for the pump out deck fitting. running horizontally to the gulper and then out through the side for overboard discharge. (not to be used when starboard side to, either another boat or a jetty ). If you were trying to pump out the tank when it was below 3/4 full the pump was unable to maintain sufficient vacuum to lift the 2' height required to commence pumping. I decided this was due to the larger one way valves on the large bore pump being more prone to be a crap trap (hee hee) and not maintain vacuum. Once it was pumping liquid it would empty the whole tank efficiently, it was only that initial start that was the problem. After many years I had to do some major work on the system (scale build up in the pipework loo to tank) and at the same time I replaced the pump with the smaller diameter version. This has to have been in action now for about 2 years and will commence a pumpout without a problem, even when there is only a tiny amount of waste in the tank. Our loo is above the waterline so I can discharge overboard direct from the macerating loo, the holding tank will be plumbed in for conventional pump out. Iv'e got a seasmart sanitizer for the raw water flush - will see how that goes, expensive bit of kit but seemed a good idea on a leisure boat that could sit for a while between flushes. |
|
|
|
Post by faffer on Nov 22, 2016 19:22:20 GMT
|
|
|
|
Post by faffer on Nov 22, 2016 20:16:57 GMT
A few folk have said its to difficult to do, is there something we are missing as that is how i see it, all the fitting are cheap, all available on the link. even a dust cap for when moving the tank around. Only negative is some say these loo`s use a lot of water so the tank will fill fast. |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 22, 2016 20:20:59 GMT
Nah, they are missing an imagination!
A manual bog doesn't use a huge amount of water for the flush. You don't live aboard so it ain't gonna be an issue.
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 22, 2016 20:21:26 GMT
Don't forget, Fibreglass is not an issue |
|
|
|
Post by faffer on Nov 22, 2016 20:25:16 GMT
Nah, they are missing an imagination! A manual bog doesn't use a huge amount of water for the flush. You don't live aboard so it ain't gonna be an issue. I should just do things instead of asking as folk just put off projects lol, good job i didnt ask if i should of bough my boat ha ha Don't forget, Fibreglass is not an issue I am seeing if the chap who made my water tanks can make me a couple more, if not........  |
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Nov 22, 2016 20:26:18 GMT
Meant to say, I would just use a 1/4 ball valve for air admittance into the tank when emptying to stop it glugging. You don't upend them in one go so it will be manageable. I can't wait to get rid of our bucket and chuckit though! The dwarf is going great guns potty training so she will add to the see who can fill the bog the fastest competition next year |
|
).
