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11-23-2022, 10:34 AM
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#1
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Junior Member
Join Date: Nov 2022
Location: Vancouver
Posts: 16
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Floor under shower not insulated.
So I just took the cover off at the bottom of the corner shower to see if there are any leak issues and it all looks nice and dry, BUT I noticed a cutout under the shower drain for whatever reason without any insulation. This normal? Wouldn't you think they throw some batting in there? Anyhow I was also curious what the measurements of the sandwiched floor was like and what I think I see is styrofoam sandwiched between a layer of 1/4' plywood floor and maybe a 1/8" bottom layer. No wonder these floors become soft in high traffic areas by 200lb+ users......
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Hans & Bobbi
2013 Keystone Cougar 21RBS
2006 VW Touareg V10 TDI
2005 VW Touareg V8
2008 VW EOS
1998 Porsche 993 S
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11-23-2022, 12:39 PM
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#2
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,325
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Just a WAG, but I bet it was for the P trap to fit, but they used the Hepvo instead.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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11-23-2022, 04:04 PM
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#3
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Senior Member
Join Date: Nov 2018
Location: Norwood, CO
Posts: 681
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OK, I will admit ignorance. What does Hepvo mean? How does it keep odors from coming up from the gray tank?
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German Shepherd Guy
2018 Keystone 26RBPR
2014 Suburban 2500, 6L with 3.73 rear
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11-23-2022, 04:45 PM
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#4
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Junior Member
Join Date: Nov 2022
Location: Vancouver
Posts: 16
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Quote:
Originally Posted by German Shepherd Guy
OK, I will admit ignorance. What does Hepvo mean? How does it keep odors from coming up from the gray tank?
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Google is your friend my friend
Click the link
https://hepvo.com/hepvo-waterless-valve/
__________________
Hans & Bobbi
2013 Keystone Cougar 21RBS
2006 VW Touareg V10 TDI
2005 VW Touareg V8
2008 VW EOS
1998 Porsche 993 S
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11-23-2022, 04:46 PM
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#5
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,674
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I'm with Chuck. Looks like a P trap cutout and either the threw in the Hepvo as OE or in the years since it was built someone changed the P trap to the hepvo.
https://hepvo.com/
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Danny and Susan, wife of 56 years
2019 Ram 3500 Laramie CC SWB SB 6.4 4x4 4.10
2020 Montana High Country 331RL
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11-23-2022, 04:56 PM
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#6
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Senior Member
Join Date: Dec 2017
Location: Shingle Springs
Posts: 338
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Quote:
Originally Posted by German Shepherd Guy
OK, I will admit ignorance. What does Hepvo mean? How does it keep odors from coming up from the gray tank?
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I know how it works but you sent me down the rabbit hole looking for the meaning of Hepvo.....I give up
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Tony & Donna & Murphy
2022 Montana HC 295RL, Solar Flex 400, Onan 3600 LPG, 2000 inverter, 200AH Lithium, 2020 GMC Denali 2500 6.6 Duramax, 10 speed Alison Trans, Demco 21K Auto Slide
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11-23-2022, 05:08 PM
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#7
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Junior Member
Join Date: Nov 2022
Location: Vancouver
Posts: 16
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Quote:
Originally Posted by chuckster57
Just a WAG, but I bet it was for the P trap to fit, but they used the Hepvo instead.
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Quote:
Originally Posted by sourdough
I'm with Chuck. Looks like a P trap cutout and either the threw in the Hepvo as OE or in the years since it was built someone changed the P trap to the hepvo.
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Thanks guys I get it now. Never heard of these devices but they have been around for many years it looks like.
A good option for people that don't use their RV showers.
__________________
Hans & Bobbi
2013 Keystone Cougar 21RBS
2006 VW Touareg V10 TDI
2005 VW Touareg V8
2008 VW EOS
1998 Porsche 993 S
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11-24-2022, 05:07 AM
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#8
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Senior Member
Join Date: Nov 2018
Location: Norwood, CO
Posts: 681
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Thanks guys. I had never heard of these devices and for all I know I might have one under my shower. One of the reasons I like this site, always learning.
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German Shepherd Guy
2018 Keystone 26RBPR
2014 Suburban 2500, 6L with 3.73 rear
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11-24-2022, 08:39 AM
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#9
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Senior Member
Join Date: Nov 2017
Location: Picacho, Az
Posts: 6,809
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Quote:
Originally Posted by Funny1
Thanks guys I get it now. Never heard of these devices but they have been around for many years it looks like.
A good option for people that don't use their RV showers.
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Your shower should drain just as well with the Hepvo as it would with a P trap.
If you check you may have one at the kitchen sink &/or the bath lavatory. They're used typically in rvs & modular homes where there's no space for a P trap.
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Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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11-24-2022, 09:07 AM
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#10
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Senior Member
Join Date: Apr 2019
Location: Henniker
Posts: 2,141
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I have the same floor cutout under my drain (it is a standard p-trap). Typical with RV manufacturers where nothing is precise, all openings tend to be much larger than necessary. At least yours has the Darco covering in place, mine was a big open hole to the underbelly space. I had the Coroplast opened for some other work at one point and screwed a piece of plywood over the hole from underneath. We don’t camp in cold weather so I am not worried about the lack of floor insulation in that area. The floor doesn’t have much R-value in the first place, especially considering all the other holes and openings.
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Rob & Amy
2019 Passport 240BH SL (current)
2024 Cougar 29BHL (on order, due early May)
2022 Ford F250 7.3L Godzilla Crew Cab FX4
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11-25-2022, 05:34 AM
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#11
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Senior Member
Join Date: Dec 2019
Location: Sun City West
Posts: 907
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Quote:
Originally Posted by foldbak
I know how it works but you sent me down the rabbit hole looking for the meaning of Hepvo.....I give up
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Here's 10 minutes I'll never get back....
I think I've got the 'Hep' part...the original patent was applied for in 2005 by 'Hepworth Building Products'. I thought maybe the 'v' was for valve, and the 'o' for one-way, but those letters appear in all the various pieces they make, so perhaps not.
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2022 Rockwood Signature 8324SB
2019 F350, SRW, 6.2L, 4.30 gears
Sold: 2020 Keystone Cougar '1/2 ton' TT, 29RLKWE
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11-27-2022, 06:39 AM
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#12
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Junior Member
Join Date: Nov 2022
Location: Vancouver
Posts: 16
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Quote:
Originally Posted by travelin texans
Your shower should drain just as well with the Hepvo as it would with a P trap.
If you check you may have one at the kitchen sink &/or the bath lavatory. They're used typically in rvs & modular homes where there's no space for a P trap.
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I only have the Hepvo under the shower. The bath sink and kitchen sink both have the P-trap. I see no reason to modify them as it won't give me much more storage space. From what I read it's common for people to switch to the Hepvo is when they don't use the shower in the RV and the P-trap will dry up.
Quote:
Originally Posted by NH_Bulldog
I have the same floor cutout under my drain (it is a standard p-trap). Typical with RV manufacturers where nothing is precise, all openings tend to be much larger than necessary. At least yours has the Darco covering in place, mine was a big open hole to the underbelly space. I had the Coroplast opened for some other work at one point and screwed a piece of plywood over the hole from underneath. We don’t camp in cold weather so I am not worried about the lack of floor insulation in that area. The floor doesn’t have much R-value in the first place, especially considering all the other holes and openings.
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We may camp in cold weather otherwise it's stored on my driveway so I will throw some insulation in there and cover it up with a thin sheet of ply I have laying around.
__________________
Hans & Bobbi
2013 Keystone Cougar 21RBS
2006 VW Touareg V10 TDI
2005 VW Touareg V8
2008 VW EOS
1998 Porsche 993 S
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12-01-2022, 08:50 AM
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#13
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Member
Join Date: Aug 2018
Location: SpringGrove
Posts: 31
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I had the same problem, but I installed a Henway instead...
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12-01-2022, 09:00 AM
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#14
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Senior Member
Join Date: Aug 2018
Location: Vacaville
Posts: 309
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I'm more concerned with them cutting the floor support framing with no reinforcement. But nothing the manufacturers let slide out the door surprises me anymore.
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2013 Premier 22RBPR
2022 GMC 2500HD 4x4 Gasser
2019 Beta 500 RR-s (Pasta Rocket!)
2015 Honda CRF250L (Wifes)
Camping, home brewing, and dirt bikes!
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12-01-2022, 10:40 AM
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#15
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Senior Member
Join Date: Jul 2011
Location: Fairhaven, MA
Posts: 354
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Quote:
Originally Posted by Moneyslinger
I had the same problem, but I installed a Henway instead...
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I put two of them in myself.
__________________
Greg
2022 Cougar 25RDS
2024 GMC Sierra 2500HD gas
Fairhaven, MA
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03-29-2023, 06:40 PM
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#16
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Senior Member
Join Date: Jul 2019
Location: delco
Posts: 148
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OK ill bite, whats a henway? about 2 pounds !Hardy har har!
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03-29-2023, 08:04 PM
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#17
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Senior Member
Join Date: Jul 2013
Location: Box Elder
Posts: 2,907
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__________________
Bob & Becky
2012 3402 Montana
2012 Chevy 2500HD D/A CC
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