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Old 10-03-2006, 08:08 PM   #1
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No tanks...Still need the vents?

So I am not using a grey or black tank becasue I will be parked full-time in a trailer park. I'm assuming I can just hookup my sewage pipe to the septic tank and keep the valve open. Sound correct? With this setup, is it necessary to have all the vents? Not having ever seen the tanks, I'm kind of confused as to the purpose of the vents. I can't imagine that a shower and sink flowing immediately out of the airstream could need to vent gases?? Am I on the right track here? Thanks again!
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Old 10-03-2006, 08:19 PM   #2
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Originally Posted by rama777
So I am not using a grey or black tank becasue I will be parked full-time in a trailer park. I'm assuming I can just hookup my sewage pipe to the septic tank and keep the valve open. Sound correct? With this setup, is it necessary to have all the vents? Not having ever seen the tanks, I'm kind of confused as to the purpose of the vents. I can't imagine that a shower and sink flowing immediately out of the airstream could need to vent gases?? Am I on the right track here? Thanks again!
Rama777,

My next door neighbor, a plumber, told me that one of the reasons for a vent stack is to prevent the traps from being sucked dry from the suction action of the water draining down the pipes. I would keep the vent stacks. Your house has vent stacks and no tanks, at least mine which is connected to the municipal sewer system.

Bill
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Old 10-03-2006, 08:21 PM   #3
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Leo,

Nice answer.

Bill
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Old 10-03-2006, 08:35 PM   #4
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Oh My. The vents are there for a reason. They provide airflow to let the system vent gases and the water to flow. Take a 2 1/2 gallon jug of bottled water with you camping and don't cut a vent hole in the top - the jug will eventually implode and no water will flow out. Why would you want to eliminate your vents..?
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Old 10-03-2006, 09:57 PM   #5
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OK. Thanks for the help. Maybe not the answer I was looking for but that's ok. Now that I've gutted the Airstream the plubming and vent system all look like hell. I was hoping to eliminate the vents to free up some space but I guess that is not an option. The whole thing just seems cheap and excessive but I guess I can't change it. There is pipes running from the sink and the shower to the left vent in the ceiling but it seems like they could be condensed a bit. There is nothing attached to the other vent on the right side? Maybe I'll put a picture up and someone might have advice for me. Thanks everyone.
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Old 10-03-2006, 10:00 PM   #6
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Wait. The pipes going to the cieling are the vent stacks right? What and where are the traps???
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Old 10-03-2006, 11:34 PM   #7
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Quote:
Originally Posted by rama777
Wait. The pipes going to the cieling are the vent stacks right? What and where are the traps???
rama777,

The traps are the "u" shaped drain pipes under the sinks and shower.

Bill
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Old 10-04-2006, 10:04 AM   #8
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So traps stop gases by holding water and vents keep the traps functioning properly. Got it. If anyone knows of another way to keep the traps up to par withou using the vents please let me know. Thanks again.
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Old 10-04-2006, 10:30 AM   #9
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If you didn't have traps and had gray and black tanks your living space would smell pretty damned bad for sure!
not only that, but these gasses are also explosive!
Quote:
Originally Posted by rama777
So traps stop gases by holding water and vents keep the traps functioning properly. Got it. If anyone knows of another way to keep the traps up to par withou using the vents please let me know. Thanks again.
there is a type of vent that lets air in, but not out...a one-way-valve, of sorts, but I wouldn't trust 'em.
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Old 10-04-2006, 02:07 PM   #10
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not only that, but these gasses are also explosive!

there is a type of vent that lets air in, but not out...a one-way-valve, of sorts, but I wouldn't trust 'em.
The one way vents are used in residential kitchen islands which do not have access to a wall for placing the vent.

Bill
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Old 10-04-2006, 05:28 PM   #11
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. . . there is a type of vent that lets air in, but not out...a one-way-valve, of sorts, but I wouldn't trust 'em.
It's called an air admittance valve (AAV). Search these forums or the web.

I wouldn't use one if I could run a regular vent, but they are useful in some situations. Like the kitchen island Bill mentioned.

Would I trust 'em? Yeah, but I wouldn't bury it where you can't get at it.
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Old 10-04-2006, 05:47 PM   #12
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If you use the standard toilet dumping into the holding tank with the dump valve left open you will drain the liquids and leave the solids to build up in the holding tank. BIG TROUBLE!!!
If you remove the holding tank and install a standard house toilet plumbed directly to the sewer, no problem!
Good luck!
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