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Old 04-22-2013, 10:48 AM   #43
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OOOohhhhh, I try to learn something new every day. Sometimes it works, sometimes not. First I've heard of it and it does make some sense. I did know that some models have only 1 waste tank and then it's a no brainer. But didn't know otherwise. I'll have to look deeper into mine just to know. I wouldn't want my plumbing doing something I didn't know about. We also do the dishpan trick.

Thanks all. See ya on the road sometime.
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Old 04-22-2013, 11:35 AM   #44
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My two Airstreams, 2012 FC 25 Front Dinette and 2007 Safari 20, both drain bath sinks into the black tank. Fill the bath sink with water, turn off water supply, push the toilet flush and hold open, pull the sink drain and look/listen for the water draining into the black tank.

doug k
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Old 05-23-2013, 01:30 PM   #45
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Originally Posted by KJRitchie View Post
Here is my elbow. It was impossible to find a single piece male 1/2" elbow so the Home Depot gal showed me a PVC elbow with female 1/2" and then took me to the sprinkler section for two male extensions. I used a little plumbers tape and screwed in the male fittings and then installed it on the black flush line. I did'nt have a water hook up so I connected a hose from the exterior hose fitting and ran it into the black flush fitting, turned on the water pump and verified no leaks. Then I pushed the hoses under the wardrobe frame and the elbow is now behind the shower.

I bought a 2 1/2 gal shop vac for the Airstream and vacuumed out all the debris. Everything felt dry. I also purchased a small bag of 2" pink insulation and stuffed it along the aluminum wall inside. Hopefully this will be the end of this.

Kelvin
This last weekend was the first opportunity to test out the replacement elbow fitting under high pressure. We had a full hook up site so when it was time to dump I hooked up my black flush hose and turned on the water then went into the closet area and reached in the access hole and followed the pipe up to the elbow and found........ some water leaking. Darn. Not much of a leak but like a dripping tap. Think its coming from the the female fittings. I'll have to check it out this weekend along with the shower leak repair part deux.

Kelvin
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Old 06-03-2013, 12:26 PM   #46
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Found a better elbow at an RV dealer parts and my black flush doesn't leak anymore. Its a one piece elbow, gray, with male ends.

Kelvin
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Old 07-15-2013, 11:25 PM   #47
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I would also like an answer to this question.
I just noticed a small water leak under my sink which is just opposite the exterior
black tank flush inlet.
Mine also says to be sure to have the valve open prior to using. However, I ignored this and used it to fill my tank for extra flushing. I'm wondering if this added too much pressure and caused a leak?
When I tried to look up under there, something fell into the wheel well. I think it was some sort of "cap" on top of a vertical vent? the top has a spring loaded something?
I can't be more descriptive because I can't see it.

Any body know something about this?

p.s. It looks like the cabinet would have to be taken out to get to the plumbing?
I can't see a way to get it out. Help?
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Old 07-16-2013, 12:27 AM   #48
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Not having the drain valve open will not add any pressure to the flushing mechanism to cause a leak...but you need to be care not to let the black tank overflow. We use our flush the same way you do, adding water to the black tank to create more of an out-flow force when dumped. If we have time and opportunity (not all dump stations are set up with a threadable water source) we close and repeat until the output is clear.

If the leak is coming from the inside connection of the flush inlet you may need to hand-tighten the interior coupling ...we had to do that and I check it periodically to make sure it has not worked itself loose. It's not easy to get to, though, as you know.

I can't tell you what the "cap" is that you are referring to. Sorry...
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Old 07-16-2013, 08:21 AM   #49
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Quote:
Originally Posted by BlueBelle View Post
I would also like an answer to this question.
I just noticed a small water leak under my sink which is just opposite the exterior
black tank flush inlet.
Mine also says to be sure to have the valve open prior to using. However, I ignored this and used it to fill my tank for extra flushing. I'm wondering if this added too much pressure and caused a leak?
When I tried to look up under there, something fell into the wheel well. I think it was some sort of "cap" on top of a vertical vent? the top has a spring loaded something?
I can't be more descriptive because I can't see it.

Any body know something about this?

p.s. It looks like the cabinet would have to be taken out to get to the plumbing?
I can't see a way to get it out. Help?
was it clear? This is the check valve which is prone to leaking and I recommend eliminating and replacing with elbows and line as discussed above.
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Old 07-16-2013, 08:22 AM   #50
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I've never used our flush system, but our 23fb was in for service and the dealer found a leak in the anti-siphon valve. It is between the flush connection and the black tank and on our 23fb it is located right behind the sink. That might be your problem. I'm pretty sure I've seen other posts about that device leaking, so it may be a common problem??
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Old 07-16-2013, 09:16 AM   #51
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I used my black water flush for the first few years of ownership on my last campout of the season. I finally decided that it probably is unnecessary if you practice proper dumping techniques. In my old HiLo which I owned for 14 years, I never had an issue with the toilet. I do make a practice of always dumping the toilet full. If it's not full, I fill it prior to dumping. Secondly on my last campout of the year I use a full hookup site. I dump the tank full, and then fill it again with clean water and dump a second time.

Jack
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Old 07-17-2013, 09:59 AM   #52
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Thank you.
Yes, it was the clear valve leaking.
Am I correct that if I don't use the flush system, there's no need in fixing/replacing the valve right away?

p.s. I found the "thing" that fell. It was a cap that fit on top of another valve. Seemed to be purely cosemtic. Anyway, I put it back on but it wasn't related to the problem.

Other posts have verified my suspicion the the flush spray didn't really work that well.
I think I'll just fill-n-flush from now on. The consensus seems to be that it is the best method.

Thanks all for the help.
JBell
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Old 07-17-2013, 10:57 AM   #53
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Yes, if you don't use the flusher, you can postpone repair. I believe it is code to be there for the mfr, but that doesn't mean you have to keep it. There is an additional check valve at the garden hose fitting, and if you are still worried, you could add a valve to the end of your garden hose. It is EXTREMELY unlikely that you would have a siphon action, even if you filled the black tank to full capacity, which is silly to begin with.
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Old 07-17-2013, 12:49 PM   #54
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Yes, if you don't use the flusher, you can postpone repair. I believe it is code to be there for the mfr, but that doesn't mean you have to keep it. There is an additional check valve at the garden hose fitting, and if you are still worried, you could add a valve to the end of your garden hose. It is EXTREMELY unlikely that you would have a siphon action, even if you filled the black tank to full capacity, which is silly to begin with.
It's code. That means you should keep it. Whether you have a siphon action or not has nothing to do with your trailer, your black tank, how full it is, or when when you last changed your shirt.

A siphon can occur when anyone else in the campground, municipality, or fire district does anything to reduce the mains water pressure. More likely to occur at a campground, where water distribution system may not be as well designed as in your home municipality.

If that happens, you won't make yourself sick, but you could give everyone else at the campground you just left a serious case of E. Coli.

Don't take chances.
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Old 07-17-2013, 02:06 PM   #55
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It's code. That means you should keep it. Whether you have a siphon action or not has nothing to do with your trailer, your black tank, how full it is, or when when you last changed your shirt.

A siphon can occur when anyone else in the campground, municipality, or fire district does anything to reduce the mains water pressure. More likely to occur at a campground, where water distribution system may not be as well designed as in your home municipality.

If that happens, you won't make yourself sick, but you could give everyone else at the campground you just left a serious case of E. Coli.

Don't take chances.
I doubt it....especially if you take other anti-siphon action. And you would be using the same hose that you wash out the sewer hose with, which is already contaminated and has it's own anti-siphon valve at the top of the tower, some 10 feet in the air. Besides I only use my flusher at season end before winterizing in my yard with 150' of hose, the already there check valve in the trailer connection AND an anti-siphon valve on the hose end.

When I looked into replacing the AS valve, I called the mfr directly. (Can't remember the name, but seem to be a mom and pop operation) He actually talked me out of BUYING one saying it wasn't necessary due to the routing of the lines and the location of the sprayer head.

BTW, this brings up another point, I realized last year, because of the check valve at the hose connection, it is advisable to blow out the flusher line while winterizing. It will hold water in about 4-5 (in my case) feet of line up to the top where the anti-siphon valve is (was).
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Old 07-23-2013, 10:39 AM   #56
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Back water flush

I have the black water swisher that comes with the unit.
Mine did plug up over the winter.
Any ideas about cleaning it off?
Davis gates
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