coloradoan
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1959 Shasta Airflyte 16
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Post by coloradoan on Jun 3, 2014 7:02:57 GMT -8
Why does my '59 Shasta Airflyte, which has no toilet or shower and no grey water tank, need a plumbing vent? All it has is a sink which drains onto the ground (when I can get away with that).
I'm putting on a new roof and would love to have one less hole through it. Can I safely delete the plumbing vent?
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John Palmer
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Hi, From a vintage trailer guy located in Santa Ana, CA. It's good to see lots of activity here.
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Post by John Palmer on Jun 3, 2014 7:19:17 GMT -8
If your going to eliminate the roof vent at least plumb the sink with a "drop down" style drain trap so you do not get the sewage odor through the sink when you are hooked up to a RV Park system.
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chametzoo
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1960 Mobile Scout
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Post by chametzoo on Jun 3, 2014 7:19:27 GMT -8
I would think that you could leave it out since your one plumbing fixture, the sink, is not tied into a holding tank or sewer system. On the other hand, you might consider leaving it in as an amenity to a future owner who may want to install a waste holding tank (i.e., resale value)… or for yourself, if you change your mind about your plumbing needs. I would think that the best time to install vents is while you are reinstalling a new roof from scratch… the best chance of it being a water tight penetration.
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gonekayaking
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enjoying using my camper and not working on it anymore!
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1956 Shasta 1500
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Post by gonekayaking on Jun 3, 2014 7:19:37 GMT -8
I would say you don't need one. My 56 same deal, only a cold water sink...no vent.
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coloradoan
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1959 Shasta Airflyte 16
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Post by coloradoan on Jun 3, 2014 10:36:12 GMT -8
According to this article: www.jlconline.com/codes-and-standards/kitchen---bath--venting-with-air-admittance-valves.aspxthe vent is only needed to prevent the water from being sucked out of the trap and the trap is only needed to prevent the escape of sewer gas. Since I have no tank for gas to escape from, no vent is needed, correct?Is this a logical conclusion? (I do have the trap) And I like the idea of draining into a portable, wheeled gray water tank that I read about on another thread. Unless convinced of the wisdom of doing otherwise, I'm planning to do away with the vent. Thanks for everyone's responses! |
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Post by vikx on Jun 3, 2014 21:44:20 GMT -8
I would do away with the trap as well. Most mid 50s trailers drained straight down from the sink and out. Catch with a bucket or tote. Eliminates the freeze factor...   |
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moonshiner
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Post by moonshiner on Sept 4, 2014 14:15:35 GMT -8
Would it still work or is it ok to reduce the 1 1/2" vent pipe down to a 1" vent I have a park model set up with no grey or black tank currently , maybe I will put tanks in at a later date but as of now the pipe is in the way to let my refrigerator slide back further.
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Post by vikx on Sept 4, 2014 22:02:51 GMT -8
Reducing the pipe size depends on what it does. A simple sink vent can be reduced, as all it does is keep the sink from burping when draining. That vent can be eliminated as above.
If you are not currently using a tank, you don't really "need" the vent stack. Shastas tended to use cast iron for the vent. I would remove it and worry about replacing with ABS if/when tanks are ever added.
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