Whole-House Trap

 
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Old 07-15-2008, 10:31 AM   #21
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Re: Whole-House Trap


The purpose of a plumbing vent is to equalize the pressure in a plumbing system in order to protect the trap seals. That's it. There is no other purpose. It's purpose is not to "vent" sewer gasses.

(There is one specific, and relatively rare, vent that has another purpose. It is found only when using a whole house trap.)

The purpose of a trap is to prevent sewer gasses from entering the space. That's it.

(Again, a whole house trap may have an alternate purpose, but not always.)
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Old 07-15-2008, 10:38 AM   #22
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Re: Whole-House Trap


Okay, so this is all anecdotal but,
it's my experience from being on roofs,
that the smell around the vents is
both more pronounced and more odiferous
when connected to septic.
Further, a house where we did a deck
was almost unbearable outdoors in the summer,
and the HO had a septic outfit come in to replace
clay vit line from house to tank with PVC.
They also put in what was descrbed as,
and appeared to to be, a trap and clean out.
When they finished it was much more pleasant
to work back there regardless of the wind direction.
Was that all voodoo?
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Last edited by neolitic; 07-15-2008 at 10:41 AM.
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Old 07-15-2008, 10:40 AM   #23
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Re: Whole-House Trap


Quote:
Originally Posted by neolitic View Post
Okay, so this is all anecdotal but,
it's my experience from being on roofs
that the smell around the vents is
both more pronounced and more odiferous
when connected to septic.
Further, a house where we did a deck
was almost unbearable outdoor in the summer,
and the HO had a septic outfit come in to replace
clay vit line from house to tank with PVC.
They also put in what was descrbed as,
and appeared to to be a trap and clean out.
When they finished it was much more pleasant
to work back there regardless of the wind direction.
Was that all voodoo?
Yeah, it was all your imagination.

Kidding!

I don't like to use house traps but it would do exactly what you described.
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Old 07-15-2008, 10:45 AM   #24
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Re: Whole-House Trap


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Originally Posted by 22rifle View Post
Yeah, it was all your imagination.

Kidding!

I don't like to use house traps but it would do exactly what you described.
Thanks, that's why I thought that was their purpose.
I never thought about the un-trapped drain senario.
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Old 07-15-2008, 09:48 PM   #25
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Re: Whole-House Trap


Welp, - - the guy came out today and cleared the lines. I wasn't there, - - I was out ordering her siding and windows, - - but she said the clog was indeed right at the house trap, - - he cleared it out for about $300. And then he suggested she get rid of both the house trap and the house vent and just run a straight line (for another $1000, - - which she didn't go for). Although that was my initial call, too, - - logic tells me that killer is right, - - how can you be sure everything has it's own trap??
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Old 07-15-2008, 09:53 PM   #26
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Re: Whole-House Trap


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Originally Posted by Tom R View Post
how can you be sure everything has it's own trap??
A smoke test could clear that right up.
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Old 07-15-2008, 09:56 PM   #27
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Re: Whole-House Trap


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Originally Posted by 22rifle View Post
A smoke test could clear that right up.

The job is done and the sh!t is flowing freely again, - - but you're on, - - how do you go about 'clearing' things up with smoke?? . . .


P.S. That $1000 would give her up to 3 more clean-outs, - - I figure probably a good 20 years at least, - - she's 73 now . . .

Last edited by Tom R; 07-15-2008 at 10:02 PM.
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Old 07-15-2008, 10:00 PM   #28
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Re: Whole-House Trap


Cap off all the vents through the roof. Hook up a smoke machine (you can buy them made for this purpose) to the plumbing system (remove a trap at lav?) and let'er rip.

If smoke comes out into the house you know where there is an untrapped drain.
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Old 07-15-2008, 10:06 PM   #29
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Re: Whole-House Trap


Interesting, - - I've never heard of that . . .
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Old 07-15-2008, 10:15 PM   #30
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Re: Whole-House Trap


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Originally Posted by Tom R View Post
Interesting, - - I've never heard of that . . .
You can make your own. Pretty simple. PM me for a link if you ever need one.
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Old 07-15-2008, 10:17 PM   #31
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Re: Whole-House Trap


Quote:
Originally Posted by 22rifle View Post
The purpose of a plumbing vent is to equalize the pressure in a plumbing system in order to protect the trap seals. That's it. There is no other purpose. It's purpose is not to "vent" sewer gasses.

(There is one specific, and relatively rare, vent that has another purpose. It is found only when using a whole house trap.)

The purpose of a trap is to prevent sewer gasses from entering the space. That's it.

(Again, a whole house trap may have an alternate purpose, but not always.)

It's (the vent) purpose is to act like a vent, the same as the vent on a gas cap or gas can, that's why they call it a vent.



Main Entry:
2vent
Function:
noun
Etymology:
Middle English, anus, outlet, probably from Anglo-French, wind, draft, outlet
Date:
15th century

1: an opening for the escape of a gas or liquid or for the relief of pressure: as a: the external opening of the rectum or cloaca : anus b (1): pipe 3c, fumarole (2): hydrothermal vent c: an opening at the breech of a muzzle-loading gun through which fire is touched to the powder dchiefly Scottish : chimney, flue 2: an opportunity or means of escape, passage, or release : outlet <finally gave vent to his pent-up hostility>
Ś ventĚless Listen to the pronunciation of ventless \-ləs\ adjective


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Old 07-15-2008, 10:24 PM   #32
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Re: Whole-House Trap


Quote:
Originally Posted by mickeyco View Post
It's (the vent) purpose is to act like a vent, the same as the vent on a gas cap or gas can, that's why they call it a vent.



Main Entry:
2vent
Function:
noun
Etymology:
Middle English, anus, outlet, probably from Anglo-French, wind, draft, outlet
Date:
15th century

1: an opening for the escape of a gas or liquid or for the relief of pressure: as a: the external opening of the rectum or cloaca : anus b (1): pipe 3c, fumarole (2): hydrothermal vent c: an opening at the breech of a muzzle-loading gun through which fire is touched to the powder dchiefly Scottish : chimney, flue 2: an opportunity or means of escape, passage, or release : outlet <finally gave vent to his pent-up hostility>
— ventĚless Listen to the pronunciation of ventless \-ləs\ adjective


.
The PRIMARY purpose of a plumbing vent is to equalize pressure in a plumbing system in order to protect the traps.

It's PRIMARY purpose is not to vent sewer gasses. That may happen but that is not why code requires each fixture to be vented.

Last edited by 22rifle; 07-15-2008 at 10:29 PM.
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Old 07-15-2008, 10:27 PM   #33
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Re: Whole-House Trap


Quote:
Originally Posted by 22rifle View Post
You can make your own. Pretty simple. PM me for a link if you ever need one.

Thanks, - - I would never really need one myself, - - but the info you've given is great to know in case this ever comes up with a customer again.

Now it does make me curious if the guy was going to do a smoke test, - - or if he was just going to eliminate the trap either way.

Anyway, - - I will let her know that if she was ever to decide to get it done, - - to make sure they do that test . . .

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