Jayco RV Owners Forum
 


Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-15-2020, 08:01 PM   #1
Junior Member
 
Join Date: Apr 2019
Location: Brunswick
Posts: 4
Black Water Flush

When flushing my black water tank, do I need to use a separate hose, or can I use my portable water hose?
__________________

Camper Bob is offline   Reply With Quote
Old 07-15-2020, 08:53 PM   #2
Senior Member
 
AndyO's Avatar
 
Join Date: Apr 2020
Location: Jefferson
Posts: 165
I use a separate, different colored hose. The one time you get a"few"nasties backed up into your water hose, then relocate them into your fresh water system, will ruin a trip quickly, especially for what a second, short hose will cost you.
__________________

__________________
Happy Camping!


Andy, Sherrie, Dixie, and Daisy
2020 Chevy Silverado 2500 SRW Duramax 10 speed GM/ Allison
2020 Jayco 336FBOK Modern Farmhouse
CURT Q20 on R20 Slider
AndyO is offline   Reply With Quote
Old 07-15-2020, 08:53 PM   #3
Site Team
 
JFlightRisk's Avatar
 
Join Date: Apr 2012
Location: Newark, NY
Posts: 6,162
For sanitary reasons, it's best to use a separate and dedicated hose for that, just in case there's a backflow. You don't want that contaminating your fresh water hose. Any hose will do for that.
__________________
Every day's a learning experience, though sometimes not what we expected.

2012 Jay Flight 19RD
2016 Ford F150 XLT 2X4 SC 3.5L Eco Max Tow
2010 Tundra TRD DBL Cab (Traded)
1 Spoiled Dog
JFlightRisk is offline   Reply With Quote
Old 07-15-2020, 09:00 PM   #4
Senior Member
 
Join Date: Jun 2016
Location: Newburgh
Posts: 3,094
Fully agree separate hose without a doubt...
__________________
2016 28BHBE
Progressive Industries EMS - Hardwired
Marineco Detachable Shore Cord
CRE 3000 Equalizer / Wet Bolt Kit
Equalizer 4 Point WDH
2016 Ford F250 6.2 Gasser
Air Lift Rear Bags w/ On Board Compressor
Marcm157 is online now   Reply With Quote
Old 07-15-2020, 09:23 PM   #5
Senior Member
 
NCMFFD's Avatar
 
Join Date: Jun 2017
Location: North County
Posts: 626
I also agree with the others and use separate hose for the black water tank flush.
__________________
2017 Nissan Titan XD 5.0 CTD SV 4wd Crewcab
2017 Jayco JayFeather 23BHM

NCMFFD is offline   Reply With Quote
Old 07-15-2020, 09:28 PM   #6
Senior Member
 
RetiredOne's Avatar
 
Join Date: Apr 2019
Location: Ocean County
Posts: 2,465
Why can't you use the same water hose?

1) Most rigs have a backflow preventer or a vacuum breaker on that flush line. The water line to the black tank is plumbed higher than the tank, so gravity can do it's thing.

2) There's no back pressure coming from the black tank, so it's not pressurized. How can it force contaminated water back into the flush line.

I believe you can use the same water line, and if you're concerned, just flush water and let it run through the hose when you disconnect it from the black flush.
__________________
----------------

2019 Redhawk 24B

RetiredOne is offline   Reply With Quote
Old 07-16-2020, 06:01 AM   #7
Senior Member
 
Join Date: Oct 2018
Location: Houston
Posts: 140
Not worth the risk no matter how small. Use a separate hose. My regulator set up has a separate faucet just for a black colored hose for the flushing purpose. I also use a bleach solution to clean camp faucets prior to hooking up to them. To each there own.

Enjoy the journey
__________________
Full timed in Newmar Essex. Off road now back in house.
Part time in 2020 Entegra esteem 29 v
2017 Jeep rubicon tow vehicle
Trapper2020 is offline   Reply With Quote
Old 07-16-2020, 06:09 AM   #8
Senior Member
 
Join Date: Oct 2018
Location: Colorado Springs
Posts: 557
Quote:
Originally Posted by RetiredOne View Post
Why can't you use the same water hose?

1) Most rigs have a backflow preventer or a vacuum breaker on that flush line. The water line to the black tank is plumbed higher than the tank, so gravity can do it's thing.

2) There's no back pressure coming from the black tank, so it's not pressurized. How can it force contaminated water back into the flush line.

I believe you can use the same water line, and if you're concerned, just flush water and let it run through the hose when you disconnect it from the black flush.
LOL. You can, I won't.

Seriously though, many people would be performing a tank flush at a dump station. That water hose typically isn't potable to start with. You want that in your hose?

How many of those cheap backflow preventers are noted as bad or failed on RV forums? My Dilbert math says, lots.
madmaxmutt is offline   Reply With Quote
Old 07-16-2020, 07:48 AM   #9
Junior Member
 
Join Date: Apr 2019
Location: Brunswick
Posts: 4
Thanks for your help!
Camper Bob is offline   Reply With Quote
Old 07-16-2020, 07:49 AM   #10
Junior Member
 
Join Date: Jul 2020
Location: Modesto
Posts: 2
For complete rundown on the black water tank visit www.trbowlin.com. He tells you how to flush and keep your black and gray water tank clean and odor free.
Rubber Man is offline   Reply With Quote
Old 07-16-2020, 07:56 AM   #11
Senior Member
 
Camper_bob's Avatar
 
Join Date: Sep 2013
Location: South Texas
Posts: 6,104
I would (and do) use a separate hose. But I use that hose for other stuff too.

I agree with RetiredOne to some extent that it is HIGHLY unlikely that hose will get contaminated, but still ... Potable water hose is for potable water ONLY.

And you stole my "handle"!!
__________________

-2018 Greyhawk 29MV
-2020 Jeep Wrangler Unlimited (JLU) (Primary Toad)
-1994 Jeep Wrangler YJ (Secondary Toad)
-2014 Jay Flight 28BHBE & Ram 2500 6.4L CC 4x4 (sold)
Camper_bob is offline   Reply With Quote
Old 07-16-2020, 08:57 AM   #12
Senior Member
 
RetiredOne's Avatar
 
Join Date: Apr 2019
Location: Ocean County
Posts: 2,465
Quote:
Originally Posted by madmaxmutt View Post
LOL. You can, I won't.

Seriously though, many people would be performing a tank flush at a dump station. That water hose typically isn't potable to start with. You want that in your hose?
Don't many dump stations already have a hose there to use? Why would you use your own hose?

Quote:
How many of those cheap backflow preventers are noted as bad or failed on RV forums
Many... and if they haven't yet, they probably will. That's why I cut mine out and put a Pex loop in, instead.
__________________
----------------

2019 Redhawk 24B

RetiredOne is offline   Reply With Quote
Old 07-16-2020, 09:14 AM   #13
Senior Member
 
RetiredOne's Avatar
 
Join Date: Apr 2019
Location: Ocean County
Posts: 2,465
Quote:
Originally Posted by Camper_bob View Post
I agree with RetiredOne to some extent that it is HIGHLY unlikely that hose will get contaminated, but still ... Potable water hose is for potable water ONLY.
I think this is a Ewwww topic for most. I think, it's more of an emotional response versus a physical possibility.

I know in my rig, the black flush Pex tubing runs in a loop up into a cabinet and back down under the floor to the black tank. The top of that loop is approximately 3 feet above the black tank connection. In all my decades of doing plumbing work, I've NEVER seen water run uphill against gravity... Never. Water seeks it's own level, and the flush line has 40+ PSI of pressure. That water is going ONE direction only, into the black tank.

So, I believe your water line contamination from the black tank flush connector is a physical impossibility. In my case, I use a brass elbow with a shutoff valve when I connect my water line at the rig, so I can shut off the flow. This kills the incoming water supply right at the connector on the rig. Once the valve gets shut off from the pressurized water, it's another physical impossibility for any backup into the water hose. Once I disconnect that elbow, I can crack the water back on and flush that connector, if I'm concerned.

Just think how many gallons get pushed though the black flush piping in during the flush.
__________________
----------------

2019 Redhawk 24B

RetiredOne is offline   Reply With Quote
Old 07-16-2020, 09:33 AM   #14
Senior Member
 
Atlee's Avatar
 
Join Date: Jun 2016
Location: Mechanicsville
Posts: 1,378
Always use a separate hose. Don't want any possibility of contamination of fresh water with the black water stuff.

Quote:
Originally Posted by Camper Bob View Post
When flushing my black water tank, do I need to use a separate hose, or can I use my portable water hose?
__________________
Erroll and Mary Doss and Duffy (RIP)
2017 Jayco Jay Flight 23RB
2014 F150 SC, 4x4, HD Pkg, Sterling Gray
Atlee is offline   Reply With Quote
Old 07-16-2020, 10:41 AM   #15
Senior Member
 
Join Date: Jun 2016
Location: Denver
Posts: 1,802
Quote:
Originally Posted by RetiredOne View Post
Why can't you use the same water hose?



I'm more in your camp - I think the odds of contamination are really small.


However, I too use a separate hose.
It was a couple of bucks at Walmart. And I sometimes leave both connected at the campground.


Makes its easier to quick flush.
__________________
2016 Greyhawk 31FK
pconroy is offline   Reply With Quote
Old 07-16-2020, 10:48 AM   #16
CAG
Senior Member
 
CAG's Avatar
 
Join Date: Oct 2019
Location: Phoenix
Posts: 857
I was returning from an elk hunt in northern Arizona and stopped at the Flagstaff Giant station as they have a dump station and I wanted to dump the black tank before going down the hill. There was a rig just finishing with the tank dump and I watched the owner drop the end flush hose that is always there with the water bib into the gutter below where most of the black hose hookups are made. I have no idea what the fluid was in the gutter but I then watched the next rig owner pick that hose up, put it in his freshwater inlet and begin filling his fresh tank. It was at that point that I decided I would never use the supplied hose, nor would I fill fresh water from that or any other dump station.

Sit back and watch those who use the public dump stations and then make up your own mind whether it is a ewww factor, or a sanitary issue. Some say no problem, I don't use that water to drink, but you probably do use it to wash dished or shower in.

I use separate hoses on fresh and black tanks.
__________________
2018 Jayco Greyhawk 29MVP
2019 Jeep Sahara Unlimited
2011 Cyclone 3010 Toy Hauler- Sold
2014 Chevy Silverado Duramax LML -Sold
CAG is offline   Reply With Quote
Old 07-16-2020, 05:11 PM   #17
Senior Member
 
Join Date: Oct 2018
Location: Colorado Springs
Posts: 557
Quote:
Originally Posted by RetiredOne View Post
Don't many dump stations already have a hose there to use? Why would you use your own hose?


Many... and if they haven't yet, they probably will. That's why I cut mine out and put a Pex loop in, instead.
They typically do have a separate hose. That nasty hose connects to the RV inlet. The next time the owner uses his own freshwater hose. He connects it to that same now contaminated RV inlet connection. That is enough for me to never want to tempt fate even if the backflow preventer were a sure thing.
madmaxmutt is offline   Reply With Quote
Old 07-16-2020, 05:13 PM   #18
Senior Member
 
Join Date: Oct 2018
Location: Colorado Springs
Posts: 557
Quote:
Originally Posted by CAG View Post
I was returning from an elk hunt in northern Arizona and stopped at the Flagstaff Giant station as they have a dump station and I wanted to dump the black tank before going down the hill. There was a rig just finishing with the tank dump and I watched the owner drop the end flush hose that is always there with the water bib into the gutter below where most of the black hose hookups are made. I have no idea what the fluid was in the gutter but I then watched the next rig owner pick that hose up, put it in his freshwater inlet and begin filling his fresh tank. It was at that point that I decided I would never use the supplied hose, nor would I fill fresh water from that or any other dump station.

Sit back and watch those who use the public dump stations and then make up your own mind whether it is a ewww factor, or a sanitary issue. Some say no problem, I don't use that water to drink, but you probably do use it to wash dished or shower in.

I use separate hoses on fresh and black tanks.
Similar reason caused me to stop renting RVs when I got out of the military. German couple at Yellowstone filled their Rental RV tank with non-potable water, at the dump station in front of us.
madmaxmutt is offline   Reply With Quote
Old 07-17-2020, 12:30 PM   #19
Senior Member
 
Join Date: Oct 2018
Location: MATTAPOISETT
Posts: 114
Not that i think you need to use a second hose but it sure does keep the tension down when my wife see me filling the tank with the black hose instead of the white one...... white hose good , black hose bad LOL
Berjr is offline   Reply With Quote
Old 07-17-2020, 02:13 PM   #20
Senior Member
 
Join Date: Feb 2019
Location: Pensacola
Posts: 278
Let us know how your case of diarrhea works out for you. Yes,,it is a personal preference on using 2 different hoses. It is more convenient to already have a separate hose hooked up to flush black tank. Then you do not have to un-hook your fresh water hose to your camper, flush tank ,then hook hose back up to camper. ( just more convenient in my opinion). This applies only when you have a full hook up campsite. When using dump station use thier hose not yours to flush with...
__________________

Florida Ranger is online now   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Disclaimer:

This website is not affiliated with or endorsed by Jayco, Inc. or any of its affiliates. This is an independent, unofficial site.


All times are GMT -6. The time now is 08:03 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Copyright 2002-2016 Social Knowledge, LLC All Rights Reserved.
×