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02-06-2017, 09:01 AM
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#1
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2 Rivet Member
1968 30' Sovereign
Baltimore
, Maryland
Join Date: Sep 2008
Posts: 20
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Trapless Shower Drain
Am I crazy? Because I am very tall, I'm thinking of draining my shower directly into my grey tank using a trapless drain. Can anyone think why this could not work?
__________________
dreamin' of streamin'
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02-06-2017, 09:13 AM
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#2
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Rivet Master
2009 27' FB Flying Cloud
1982 31' International
1991 35' Airstream 350
Jay
, Oklahoma
Join Date: Oct 2006
Posts: 1,706
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The smells from the grey tank will vent directly into the shower.
Regards,
JD
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Jeff & Cindy
'09 27FB Flying Cloud;'82 31 International
'91 350 LE MH; '21 Interstate 24GT
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02-06-2017, 09:16 AM
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#3
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2 Rivet Member
1968 30' Sovereign
Baltimore
, Maryland
Join Date: Sep 2008
Posts: 20
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Quote:
Originally Posted by jdalrymple
The smells from the grey tank will vent directly into the shower.
Regards,
JD
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A trapless drain does not allow gasses to escape.
http://proventsystems.com/product-so...uard/overview/
__________________
dreamin' of streamin'
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02-06-2017, 09:19 AM
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#4
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Rivet Master
2009 27' FB Flying Cloud
1982 31' International
1991 35' Airstream 350
Jay
, Oklahoma
Join Date: Oct 2006
Posts: 1,706
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My bad,
I didn't see you mentioned a special drain fitting.
Regards,
JD
__________________
Jeff & Cindy
'09 27FB Flying Cloud;'82 31 International
'91 350 LE MH; '21 Interstate 24GT
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02-06-2017, 09:26 AM
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#5
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4 Rivet Member
1978 25' Tradewind
1954 15' Byam Holiday
Vintage Kin Owner
Linden
, Michigan
Join Date: Jun 2014
Posts: 294
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Future Considerations
Over time, you will have to replace the drain once the SMELL starts entering your shower. They do not last forever.
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02-06-2017, 10:18 AM
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#6
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Rivet Master
2014 20' Flying Cloud
Sag Harbor
, New York
Join Date: Jun 2015
Posts: 17,523
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Could you post a link or spec sheet for that drain? Never heard of one, but maybe it would work OK. What prevents the gases from the grey tank coming back up into the shower?
PS -- edit -- like these?
http://www.supplyhouse.com/SureSeal-...FQiBswodE_8PZA
http://www.kessel.com/products/drain...multistop.html
Do you have to manually engage the rubber seal each time you leave the shower? If it does not seal well, and the grey tank is really full, won't the contents slosh out/up into the shower while the trailer is being towed?
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02-06-2017, 11:30 AM
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#8
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Rivet Master
2014 20' Flying Cloud
Sag Harbor
, New York
Join Date: Jun 2015
Posts: 17,523
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Thanks. Pretty neat.
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02-06-2017, 11:40 AM
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#9
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Rivets?
1992 29' Excella
2010 22' Interstate
Van By The River
, Georgia
Join Date: Feb 2002
Posts: 2,363
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Seems like an interesting product. I watched the video as well as looking at several of the PDF files showing dimensions for the installed drain. The dimensions were not entirely conclusive.
Do you really save any vertical space? It appears the "tongue" of the trapless drain will end up submerged in gray water as the tank approaches the full level. Will the drain still work when it's submerged? If it still works when submerged then you may be saving some space. Be sure to double-check all the dimensions before designing this into your system.
Keep us posted if you decide to use the system.
__________________
Lucius and Danielle
1992 29' Excella Classic / 2010 Interstate
2005 Chevrolet Suburban K2500 8.1L
2018 GMC Sierra K1500 SLT, 6.2L, Max Trailering
Got a cooped-up feeling, gotta get out of town, got those Airstream campin' blues...
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02-06-2017, 12:05 PM
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#10
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2 Rivet Member
1968 30' Sovereign
Baltimore
, Maryland
Join Date: Sep 2008
Posts: 20
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Quote:
Originally Posted by nvestysly
Seems like an interesting product. I watched the video as well as looking at several of the PDF files showing dimensions for the installed drain. The dimensions were not entirely conclusive.
Do you really save any vertical space? It appears the "tongue" of the trapless drain will end up submerged in gray water as the tank approaches the full level. Will the drain still work when it's submerged? If it still works when submerged then you may be saving some space. Be sure to double-check all the dimensions before designing this into your system.
Keep us posted if you decide to use the system.
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I have to think if there is space in the tank, the higher water will find it's way down. Yes, I would purchase the drain and internals prior to committing to the install.
__________________
dreamin' of streamin'
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02-06-2017, 12:46 PM
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#11
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Rivet Master
1991 25' Excella
2011 19' Flying Cloud
Santa Ynez
, California
Join Date: Jan 2017
Posts: 1,185
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If I were to try using this I would design for the tip of that flapper to be no lower than the top of the tank and not submerged at all, so whether that gains you anything or not you need to calculate.
My thought of keeping it out of the tank is to keep it flushed every use so that hair or any other nasties don't build up and keep it from sealing 100%, I also doubt it does seal 100% so tank slouching on the road could leak thru.
My 2 cents
Alan
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02-06-2017, 03:13 PM
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#12
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2 Rivet Member
1968 30' Sovereign
Baltimore
, Maryland
Join Date: Sep 2008
Posts: 20
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Quote:
Originally Posted by AlinCal
If I were to try using this I would design for the tip of that flapper to be no lower than the top of the tank and not submerged at all, so whether that gains you anything or not you need to calculate.
My thought of keeping it out of the tank is to keep it flushed every use so that hair or any other nasties don't build up and keep it from sealing 100%, I also doubt it does seal 100% so tank slouching on the road could leak thru.
My 2 cents
Alan
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I was sort of thinking the same thing, but then again, who runs their grey tank that full? If you notice the drain slowing, you can always let out some grey water.
__________________
dreamin' of streamin'
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02-06-2017, 03:48 PM
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#13
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Moderator
Vintage Kin Owner
...
, ...
Join Date: Jul 2007
Posts: 11,696
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I think this will work fine and my bet is that once the tank is full and there is no water flowing into the gray tank, the rubber flap will simply close, eliminating any significant backup.
BTW when we have full hookups I typically leave the bath gray tank valve open.
Might try contacting the manufacturer.
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"One of the best lessons I've learned is that you don't worry about criticism from people you wouldn't seek advice from."
William C. Swinney
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