Cassette toilet vs. black water flush toilet - Page 2 - Fiberglass RV


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Old 07-13-2016, 11:09 AM   #15
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Name: Sandra
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Thanks for your input

Thanks to everyone for their input. As a future newbie, I appreciate the education. My two main concerns are being able to carry the cassette (I use to work with horses and a 10 gal water bucket is very heavy), and easy disposal of the tank or cassette. I'm 62 years old, and carrying a heavy cassette, and lifting it to dump it, is something that I don't want to deal with.
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Old 07-13-2016, 12:05 PM   #16
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I have had both I like the flush much better , did not like the cassette at all .
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Old 07-13-2016, 12:32 PM   #17
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Casita Greg: Did you install the holding-tank flushes yourself? I'm reluctant to get into mucking about with the plumbing on our new-to-us Casita. But I'd sure like a flush valve, especially on the black-water tank. When we were shopping a couple of months ago, I noticed that many of the new stickies have them built in.

/Mr Lynn
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Old 07-13-2016, 01:02 PM   #18
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Look at website natureshead.net (nature's head composting toilet) as well as check youtube videos on same. Have fun, no matter what decision you make you will enjoy the camper.
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Old 07-13-2016, 07:40 PM   #19
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Casita Greg: Did you install the holding-tank flushes yourself? I'm reluctant to get into mucking about with the plumbing on our new-to-us Casita. But I'd sure like a flush valve, especially on the black-water tank. When we were shopping a couple of months ago, I noticed that many of the new stickies have them built in.

/Mr Lynn
Yes I did install it myself. The particulars about the install that I had posted on the Casita forum are here below:

I used a standard 4" hole saw to cut through the dinette bench cabinet and on through to the fiberglass bathroom partition wall. This "sandwich" is about an inch in thickness measuring from the fiberglass wall of the dinette bench, the carpeting in between, and the rear wall of the bathroom. Once through the bathroom wall (drilling forward from the underside of the dinette bench) you will find an air gap of about 3/4" before you run into the side of the black water tank itself. Your pilot bit will probably punch into the side of the black water tank by the time you finish cutting the 4" hole through the bathroom partition, but this is not a bad thing, as it will serve as your reference centerpoint for the smaller hole you'll need to install the quickie flush sprayer (J C Whitney, cat. # 810951, about $25 bucks). The trick here is to develop a "touch" for when you have cut through the partition, and go slow so as not to cut a 4" hole in the side of your black water tank!

The rest is pretty straight forward plumbing using a few feet of reinforced plastic tubing (got mine at Lowes) and some barbed connectors (2 with threaded and barbed fittings and 1 double barbed elbow), and and 4 stainless steel screw clamps to attach it to the threaded fittings to the sprayer and the inlet (standard trailer water hose inlet fitting available at any RV supply) which needs to be mounted in the sidewall of the trailer where it will come in under the front side dinette bench. To seal the sprayer to the side of the black water tank I used a good marine grade permanent sealer (such as 5200 or equivalent.) I would caution against using anything like common bathtub caulking as it isn't strong enough and you certainly don't want this one to leak.

In case anyone was wondering, the sprayer unit does have a built-in back-flow preventer to keep "black water" from flowing in reverse, but I still use a dedicated hose for flushing and another for potable water, just to be safe. I also incorporated quick detach hose fittings to the trailer inlet and the flushing garden hose just for added convenience.

This mod is one of my favorites, and every time I flush my tank I am so happy I did it. No more pulling a hose and wand through the window anymore.

The outside flush hose connection and under front dinette seat installation details of bulkhead drilling measurements are shown above in previous post.
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Old 07-13-2016, 08:53 PM   #20
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The up side to the cassette or a portta potti is you don't need a dump station. You can dump in any toilet, even an outhouse. The down side is that the tanks are smaller requiring more frequent dumping.
Signs in the outhouses of a BC Forest Service campground that I frequent say you are NOT to dump porta pottis.
I suspect that the people who get to clean the washrooms in campgrounds with flush toilets are not happy to follow someone who dumped in their facility either.
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Old 07-14-2016, 11:10 AM   #21
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I have used both. I like the dump almost anywhere convenience of the cassette but not the limited capacity. The ick factors are similar. I recently purchased a 12v macerator pump for my holding tanks which allows me to dump most places I could have dumped with my cassette, notably at home after a trip.

There are a few toilets out there which prohibit cassette dumping but there are also a few dump stations which prohibit dumping if you have used chemical treatments in your holding tanks.
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Old 07-14-2016, 11:54 AM   #22
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The up side to the cassette or a portta potti is you don't need a dump station.
I don't need a dump station or sewer hookups either and both of my trailers have gray and black water tanks. I've even come home with water in both tanks and dumped down the sticks 'n bricks toilet. The good part of this home built blue tote, is I can use it for either black or gray water.

Cassette or flushable loo, as long as they work for the owner... that's all that matters.
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Old 07-14-2016, 02:23 PM   #23
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Signs in the outhouses of a BC Forest Service campground that I frequent say you are NOT to dump porta pottis.
I suspect that the people who get to clean the washrooms in campgrounds with flush toilets are not happy to follow someone who dumped in their facility either.
First, I really could care less what the BC forest service campground signs say. Second, how anyone can miss in an outhouse with a porta potti deserves study. Perhaps the BC forest service has investigated. Do let us know. Third I dump my porta potti in our home toilet. Trust me, the bathroom inspector here is a lot tougher than anyone working in a camp ground.. If she can't tell I've done it, nobody can.
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Old 07-14-2016, 02:29 PM   #24
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..... I've even come home with water in both tanks and dumped down the sticks 'n bricks toilet.
I have an image of a stinky slinky fed through a bathroom window.

I seem to recall a member who added a dump outlet feeding to his septic tank and another who just spread the stuff. When you get your tank pumped here that's exactly what they do but it's treated first. Raz
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Old 07-14-2016, 02:59 PM   #25
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Second, how anyone can miss in an outhouse with a porta potti deserves study.
Well Raz,
Its quite obvoius that you are a big fan of Porta-Potties, but I personally have had numerous campground bathroom experiences, (that I could well have done without,) while looking for a "place to go" and there was crap, pee and toilet paper all over the place. You can't tell me that this was due to anything other than some sloppy handling of Porta-Potty tanks by careless dumpers.
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Old 07-14-2016, 03:39 PM   #26
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Signs in the outhouses of a BC Forest Service campground that I frequent say you are NOT to dump porta pottis.
I suspect that the people who get to clean the washrooms in campgrounds with flush toilets are not happy to follow someone who dumped in their facility either.
I have seen the same restrictions posted at many campgrounds in both the outhouses and the flush restrooms .I have also seen signs that state Porta potties must be dumped at the dump station only .
Looking at the mess that I often see at the dump station ,I can only imagine what the bathrooms and outhouses would end up looking like if people dumped in them. One campground owner told me that someone dumped his / her Porta potties in one of the shower stalls and they had to shut down the showers and wash down and sanitize the whole shower house.
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Old 07-14-2016, 03:49 PM   #27
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At one of the NOGs, one of the campers had a cassette potty. I ran into "Keith" as he was doing the "Walk of Shame" (his words not mine) on his way to the dump the cassette. So, even though I truly believe if a cassette works for you... I'll never forget his words. Made a memory!
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Old 07-14-2016, 04:52 PM   #28
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Well Raz,
Its quite obvoius that you are a big fan of Porta-Potties, but I personally have had numerous campground bathroom experiences, (that I could well have done without,) while looking for a "place to go" and there was crap, pee and toilet paper all over the place. You can't tell me that this was due to anything other than some sloppy handling of Porta-Potty tanks by careless dumpers.
I have a small trailer. A PP is what I have. The Op asked about cassette toilets vs black tanks and I responded. My mistake. Just to set the record straight, if there is a dump station, I use it. But many NFS campgrounds have nothing but outhouses and when the PP is full, I dump. The only difference I see between dumping my PP in an outhouse and using the outhouse is the intimate contract with a less that desirable seat. As I said before, how someone misses is beyond me but then I've been to many dump stations where the previous user(s) did a less than stellar job. I'm sure we both find that equally mystifying.

As far as campground toilets, it ain't just the guy with the PP. Sunday mornings are the worst. You know that as well as I do. So Greg, with a toilet in your trailer, why would you go there? Raz
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