| do I really need 3 vents [message #207437] |
Sun, 12 May 2013 04:23  |
appie
Messages: 902
Registered: April 2013
Location: denmark
Karma: 2
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Going through "Olga" and redoing the kitchen I am wondering : do I really need 3 vents from the black tank ?
Would make my life easier to omit the one at the kitchen
Appie
Eleganza
Denmark
Appie
eleganza 76 "Olga" now sadly sold
6 wheel discbrake
Quadrabags
Springfield stage 2 462 olds
Manny tranny
( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html
Fulltiming in Europe july 2014 til july 2016
Denmark
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| Re: do I really need 3 vents [message #207443 is a reply to message #207437] |
Sun, 12 May 2013 07:15  |
bobby5832708
Messages: 237
Registered: November 2006
Location: Winter Springs FL
Karma: 3
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You want to keep that vent in the kitchen because it's not a black tank vent, it's a 'siphon breaker' for the kitchen sink drain plumbing.
If you don't vent the drain plumbing what happens is when you let the water out of the sink it creates a siphon action and when the sink empties the p-trap will empty also. An empty p-trap would then let sewer gasses come back up the sink drain and cause a bad smell in the coach. The siphon action that is created in the p-trap is just like hpw a toilet works, only a toilet is refilled with water to keep it's trap full.
http://www.ehow.com/about_4673213_plumbing-vents.html
Bob Heller
2017 Winnebago 29VE
Winter Springs FL
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| Re: do I really need 3 vents [message #207444 is a reply to message #207437] |
Sun, 12 May 2013 07:36 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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You've always got to have "Air behind Water" or things won't drain properly or even drain at all. You could combine the vents INSIDE the coach and have fewer holes in the roof but you have to vent every drain. My house has lots of plumbing but due to some careful planning and good advice by my plumbing inspector, I only have two vents going through the roof.
Some of the ventless adapters could be used.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: do I really need 3 vents [message #207463 is a reply to message #207444] |
Sun, 12 May 2013 10:18 |
appie
Messages: 902
Registered: April 2013
Location: denmark
Karma: 2
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Thanks for all the sensible answers I will let it in. The reason I'd rather be without is that the Y connection is missing and ofcourse it is difficult to find the right (inch) stuff overhere
Appie
eleganza 76 "Olga" now sadly sold
6 wheel discbrake
Quadrabags
Springfield stage 2 462 olds
Manny tranny
( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html
Fulltiming in Europe july 2014 til july 2016
Denmark
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| Re: [GMCnet] do I really need 3 vents [message #207476 is a reply to message #207468] |
Sun, 12 May 2013 12:33 |
appie
Messages: 902
Registered: April 2013
Location: denmark
Karma: 2
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Senior Member |
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Yes I will have to look into that. hoses should be possible
Appie
'eleganza 76
Denmark
Appie
eleganza 76 "Olga" now sadly sold
6 wheel discbrake
Quadrabags
Springfield stage 2 462 olds
Manny tranny
( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html
Fulltiming in Europe july 2014 til july 2016
Denmark
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| Re: [GMCnet] do I really need 3 vents [message #207561 is a reply to message #207476] |
Mon, 13 May 2013 11:31 |
Jon payne
Messages: 495
Registered: May 2008
Karma: 1
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Speaking of vents, all three of mine are completely deteriorated and need to be replaced (vent caps). Anyone have a source for these. I looked at campersworld.com but I'm not sure they will fit properly.
Jon
Jon Payne
76 Palm Beach
Westfield,IN
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| Re: [GMCnet] do I really need 3 vents [message #207564 is a reply to message #207561] |
Mon, 13 May 2013 11:45 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Jon,
The vent caps are available at most RV stores. I know that my local RV dealer has the replacement cap that fit. You need to check our your local RV dealers parts.
JR Wright
78 Buskirk Stretch
Michigan
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> Speaking of vents, all three of mine are completely deteriorated and need to be replaced (vent caps). Anyone have a source for these. I looked at campersworld.com but I'm not sure they will fit properly.
>
> Jon
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: do I really need 3 vents [message #207579 is a reply to message #207577] |
Mon, 13 May 2013 12:50 |
appie
Messages: 902
Registered: April 2013
Location: denmark
Karma: 2
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Senior Member |
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No vents at all in Danish houses ?
Appie
eleganza 76 "Olga" now sadly sold
6 wheel discbrake
Quadrabags
Springfield stage 2 462 olds
Manny tranny
( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html
Fulltiming in Europe july 2014 til july 2016
Denmark
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| Re: do I really need 3 vents [message #207588 is a reply to message #207437] |
Mon, 13 May 2013 14:32 |
Craig Lechowicz
Messages: 541
Registered: October 2006
Location: Waterford, MI
Karma: 0
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I won't get this quite right, but in a combination vent (waste and vent combined in the same pipe), the highest part of the pipe where it joins an air only vent line has to be above the lowest part of the pipe where it meets the trap. So, with a traditional 1/4" per foot slope, and a 1-1/2" combined vent, it would have to be located less than 6' away from where the nearest air only vent pipe meets it.
Craig Lechowicz
'77 Kingsley, Waterford, MI
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