Reply
 
Thread Tools Display Modes
 
Old 08-05-2017, 04:28 PM   #1
Skoolie
 
druidwood's Avatar
 
Join Date: Aug 2017
Location: Gold Bar, WA
Posts: 124
Year: 1991
Coachwork: Bluebird
Chassis: TC 2000
Engine: 5.9 L Cummins Turbo
Rated Cap: 28
p-trap

If I only have a shower/kitchen sink going to a smaller grey water tank, any reason I need a p-trap if there are no sewage odors? Also rather than elaborate air intake vents like in a house, couldn't I just have a vent coming out of the tank, rather than going up through the roof? Idea is to put the tank under the shower/sink.

Also wondered about just having a hose drain at the grey tank, rather than the large mouthed type on most rvs. With a vent on top of the tank, wouldn't it drain pretty quickly out of a hose? Thinking of a 30 gallon grey tank.

I haven't seen any pictures that showed a clean out plug at the bottom of the tank, does one worry about hair or odd items getting into the tank and how to get them out?

Thank you.
druidwood is offline   Reply With Quote
Old 08-05-2017, 04:37 PM   #2
Bus Crazy
 
CaptSquid's Avatar
 
Join Date: Nov 2015
Location: Billings, MT
Posts: 1,236
Year: 2003
Coachwork: Thomas
Chassis: HDX
Engine: Cat C7
Rated Cap: 84 passenger
A P=Trap, while not a necessity on a single tank system, isn't going to hurt. But, you WILL need a vent for the tank. Try using a vent designed for island kitchen sinks. You won't have to penetrate the roof.
CaptSquid is offline   Reply With Quote
Old 08-05-2017, 05:05 PM   #3
Skoolie
 
druidwood's Avatar
 
Join Date: Aug 2017
Location: Gold Bar, WA
Posts: 124
Year: 1991
Coachwork: Bluebird
Chassis: TC 2000
Engine: 5.9 L Cummins Turbo
Rated Cap: 28
Looks like that would be a Air Admittance Valve (AAV), which I hadn't heard of before. Thanks.
druidwood is offline   Reply With Quote
Old 08-05-2017, 06:44 PM   #4
Bus Crazy
 
2kool4skool's Avatar
 
Join Date: Oct 2015
Location: Spring Valley AZ
Posts: 1,170
Year: 2000
Coachwork: Bluebird
Engine: 5.9 Cummins
Rated Cap: 2 elderly children, 1 cat
Only once have I wished I had a trap in the grey system. I had flushed out the water heater which was smelling really strong of sulphur and forgot to drain the holding tank. The next time I entered the bus...... Whew.
__________________
Don, Mary and Spooky the cat.
2kool4skool is offline   Reply With Quote
Old 08-05-2017, 06:59 PM   #5
Bus Crazy
 
turf's Avatar
 
Join Date: Apr 2013
Location: Colorado
Posts: 1,594
Year: 1993
Coachwork: bluebird
Engine: 5.9 Cummins, Allison AT1545
Rated Cap: 2
yep - tanks stink!!! any tank

try hepvo instead of a ptrap. waterless ptraps don't freeze and break
__________________
.
Turfmobile Build Thread
turf is offline   Reply With Quote
Old 08-06-2017, 11:14 AM   #6
Bus Geek
 
Join Date: May 2016
Location: Eastern WA
Posts: 4,440
Year: 2002
Coachwork: Bluebird
Chassis: All American RE (A3RE)
Engine: Cummins ISC (8.3)
Rated Cap: 72
I would STRONGLY recommend a trap for your shower and sink drains. If you spend any time boondocking in warm weather your grey water will get pretty stinky.

I have lived, full time, for close to nine years in buses and 5th wheel. Trust me, you don't want to smell your grey water after it has aged a week in 80 degree weather.
PNW_Steve is offline   Reply With Quote
Old 08-06-2017, 11:25 AM   #7
Bus Crazy
 
milkmania's Avatar
 
Join Date: May 2015
Location: Oklahoma aka "God's blind spot"
Posts: 2,360
Year: 1989
Coachwork: 1853FC International/Navistar
Chassis: 35' Retired Air Force Ambulance
Engine: DT466, MT643
Rated Cap: 6 souls and a driver
Quote:
Originally Posted by PNW_Steve View Post
I would STRONGLY recommend a trap for your shower and sink drains. If you spend any time boondocking in warm weather your grey water will get pretty stinky.

I have lived, full time, for close to nine years in buses and 5th wheel. Trust me, you don't want to smell your grey water after it has aged a week in 80 degree weather.
I STRONGLY concur!
Dead skin cells eventually start stinking. Then if you wash off an empty plate in the kitchen sink, you've given bacteria the food it needs to thrive.

Plus you'll have to contend with Pink Mold
Quote:
The pink bacteria that builds up on the grout between your shower tiles is known scientifically as Serratia marcescens, and it feeds on fatty substances such as soap scum. Pink mold can cause urinary tract infections and infection of wounds
__________________
I once complained I had no shoes....
Until I met a man with no feet
milkmania is offline   Reply With Quote
Old 08-06-2017, 12:34 PM   #8
Bus Crazy
 
Join Date: Mar 2011
Location: Oregon/Philippines
Posts: 1,660
use p trap... the plumbing code was put in place for a reason. also, do automotive wiring correctly...
__________________
Jesus Christ... Conversion in progress.
chev49 is offline   Reply With Quote
Old 08-06-2017, 12:46 PM   #9
Bus Nut
 
dredman's Avatar
 
Join Date: Dec 2014
Location: Birmingham Al
Posts: 577
Year: 2003
Coachwork: Blue Bird
I can testify to both, living with and without P-trap. My first bus was my trial and error bus, and without p-trap it was fine till you emptied grey....unless you ever got under way. Then I guess there was a vacuum in the bus with any windows open, thus pulling a vacuum on the tank, thus pulling a LOVELY scent from the tank - and if you have a kitchen/food sink you WILL have odor in the tank. I put a p-trap in
__________________
My Skoolie Story on YouTube
dredman is offline   Reply With Quote
Old 08-06-2017, 12:48 PM   #10
Skoolie
 
bigskypc50's Avatar
 
Join Date: Dec 2016
Location: Anaconda,MT
Posts: 205
Year: 1995
Coachwork: Amtran
Chassis: International
Engine: DT466 Turbo
Rated Cap: 90
I have an AAV under my kitchen sink, the fixture furthest away from the tank and a P-Trap on every single fixture along with a 1/2" vent on my tank. No problems thus far.
bigskypc50 is offline   Reply With Quote
Reply

Tags
grey water, plumbing, tank, trap

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT -5. The time now is 04:50 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.