| Author | Message | ||
| Douglas Tappan (Dougthebonifiedbusnut)
Registered Member Username: Dougthebonifiedbusnut Post Number: 116 Registered: 10-2004 Posted From: 24.63.8.181  Rating: N/A |
Hey All, I got my tank for my grey and black water and all the sinks and tiolet dump into it. All of my traps have one way vents on them but now I need to find a "two way" vent that will let air out of the tank when it is filling, but also let air into the tank when the tank is emptying.In all other conditions the valve will remain closed. Anyone heard of such an animal? | ||
| R.C.Bishop (Chuckllb)
Registered Member Username: Chuckllb Post Number: 1126 Registered: 7-2006 Posted From: 75.211.8.132 Rating: N/A |
Doug...curious setup you have there....unless I am reading it wrong. Can you not just "vent" the tank? Why would it have to be a "two way" setup? A "common" inch and a half line between the lavs and the tank (dumping into the tank, of course, with a 2 inch vent above that line should do the trick, venting at the dump into ghe tank. (Better two inch all the way, if space is not a problem. vent || lav--sink---commode----========|| ||tank || Out Maybe I'm missing something? FWIW RCB | ||
| Gus Causbie (Gusc)
Registered Member Username: Gusc Post Number: 1092 Registered: 11-2005 Posted From: 173.202.2.84  Rating: N/A |
Doug, What you are describing is an open vent!! No need for any valves. It needs to be always open to vent odors. RC is right on the 2". I have 1.25" and it is not enough for dumping, OK otherwise. | ||
| Douglas Tappan (Dougthebonifiedbusnut)
Registered Member Username: Dougthebonifiedbusnut Post Number: 117 Registered: 10-2004 Posted From: 24.63.8.181 Rating: N/A |
Ya, I need to explain myself a little better. this tank is more a distribusion box ,if you will,20 g's, it's in the middle of the bus just below the toilet.If I am at a campground where there is sewer I will just let all of the water flow into the sewer pipe out of the "D" box.However if I have no sewer I will let the "D" box fill up and than discharge that 20 g's via a macerating pump to the 80- 100 gal tank located just behind the front axle.So,not only do I need to vent air into the box when it is running to the campground pipe, but I need to vent air out of the tank when it is being filled proir to transfering the waist to the main tank. | ||
| doug yes (Dougg)
Registered Member Username: Dougg Post Number: 119 Registered: 1-2007 Posted From: 174.131.44.50 Rating: N/A |
Would connecting the two tanks together with a pipe at the top work? | ||
| George M. Todd (George_todd)
Registered Member Username: George_todd Post Number: 939 Registered: 8-2006 Posted From: 99.39.13.50 Rating: N/A |
Yes, as far as equalizing pressure, but not for use. Vent both of them out the roof, with at least 2" and be done with it! G Sniff... | ||
| Douglas Tappan (Dougthebonifiedbusnut)
Registered Member Username: Dougthebonifiedbusnut Post Number: 118 Registered: 10-2004 Posted From: 24.63.8.181 Rating: N/A |
Thanks Guys, Due to space constraints and inherant problems with going through the roof I won't put a pipe out the roof. When the whole system is complete I will vent the main tank on the outside of the bus similar to a gen up pipe. In any case I will need a 2 way valve on the "D" box. | ||
| Larry Baird (Airhog)
Registered Member Username: Airhog Post Number: 180 Registered: 1-2001 Posted From: 108.0.48.25  Rating: |
Vent next to the ground? Should be nice addition to the evening wine and cheese when setting outside.  | ||
| Gus Causbie (Gusc)
Registered Member Username: Gusc Post Number: 1094 Registered: 11-2005 Posted From: 173.202.21.159 Rating: N/A |
Doug, I don't understand why you are using this D tank? It seems to me to complicate what is otherwise a very simple system. You don't have to place a toilet directly over a tank. This is a myth. Also, whether or not you use the D tank, I recommend you fill any tank when hooked to a sewer before dumping. This way it gets flushed out by the liquid in the tank each dump and solids don't accumulate on the tank bottom. My commode is on the opposite side of the bus from the tank (one tank only). The sewer pipe passes forward into the next bay, then across that bay back into the rearward bay and then into the bottom of the waste tank!! It has very little slope anywhere!! And there are two 90* Ls in the line?? This toilet sewer pipe is about 12' long and is also connected to the kitchen sink and shower near the commode!! According to everything I've read on the forums this won't work, but it does, even on an opposite slanted parking spot?? I probably wouldn't have done it that way but it was on the bus when I bought it but works fine. The only thing I can figure that makes it work is that we always use plenty of water to flush. Long may even be better because you aren't exposed to the whole black tank surface every time the toilet flapper opens. Since my sewer pipe goes into the bottom of my tank the only surface area my toilet sees is whatever is in the drain pipe. I also have a tank vent which makes a loop above the tank then back down through the floor. I'm not recommending you do this because the code police will get on my case, but it works for me and a few others. | ||
| George M. Todd (George_todd)
Registered Member Username: George_todd Post Number: 940 Registered: 8-2006 Posted From: 99.39.13.50 Rating: N/A |
Heck with the code police, I echo Larry's comment right above, that's the only reason not to. Having plumbed several houses after the low-water usage toilets came to be, and dealing with a number of "plugged up" complaints, I figured out how to fix it. The answer is the way Gus's bus is plumbed, with sinks and showers connected immediately downstream from the toilet. Lots of slick, soapy water does wonders for moving things downstream. Vegetable oil (as in the kitchen sink) doesn't hurt either. G | ||
| Gus Causbie (Gusc)
Registered Member Username: Gusc Post Number: 1097 Registered: 11-2005 Posted From: 173.202.17.111 Rating: N/A |
The only time I've ever noticed my vent is while recently working on my leveling valve just inches from the vent, then it was very noticeable but only when very close. Air is a wonderful diffuser of odor. I wouldn't want a vent in the side though, for looks if nothing else. |
