Jump to content
Sign in to follow this  
JohnZ3

Black tank flush port question

Recommended Posts

<b>Hello, I wanted to try out the black tank flush port today for the first time (using  clean water on a previously emptied tank). I carefully read all of the instructions and reviewed the bathroom vent and drain diagram. Both reference a shutoff valve that must be opened before flushing the tank.  I located the incoming water line under the front dinette seat, but there was NO valve anywhere. I then hooked up a hose and slowly added water which I could see (clear inlet hose) and hear water filling the black tank. When I opened the black tank tee handle at the rear, everything appeared to flush properly. My question is.....did the factory forget to install a shutoff valve or has there been a design change?  I can cut in a valve, if needed. Thanks, John</b>


John & Eileen


2018 F150 EB Super Crew FX4


2018 Oliver Elite II Hull #405


 

Share this post


Link to post
Share on other sites

The shut off valve you are looking for should be under the dinette seat fairly close to where that line enters the black tank.  I'm not sure when the factory started adding that valve, but, I know that my Ollie (hull #117) does not have one.  Given that there is a "check" valve on that line and all other signs seem to indicate that the flush worked properly - I would not worry about it.  Next time you are at the factory you might want to ask about it or if it really bothers you, go ahead and cut it in yourself.

 

Bill

  • Thanks 2

2017 Ford F150 Lariat 3.5EB FX4 Max Towing 2016 Oliver Elite II - Hull #117 "Twist"

Share this post


Link to post
Share on other sites

I do believe that they changed the design.  There was a discussion here a month or so ago about it, and some trailers have both a check valve and a manual valve, and some only the check valve.

 

 

 

edit - Bill seems to be a faster typer than me today.  ;)

  • Thanks 1

Snowball • 256 • 2018 Ford Raptor

Share this post


Link to post
Share on other sites

Today?

  • Thanks 1

2017 Ford F150 Lariat 3.5EB FX4 Max Towing 2016 Oliver Elite II - Hull #117 "Twist"

Share this post


Link to post
Share on other sites

I can confirm the above. We do not have a black tank flush valve either (Elite I hull#409 completed in late November 2018).

 

That's good, because if we did it would be impossible to get to. I can see most of the tubing from where it enters the hull to where it enters the black tank with a flashlight and a mirror-on-a-stick, but most of it is buried under or behind the furnace and there is insufficient clearance to get a hand/arm into or around that space to operate such a valve if it did exist.

 

The 2019 Owner's Manual (dated 1/8/2019) has removed the prior reference to this valve. See the "Oliver University" link under "Travel Trailers" above to download the latest owner's manual (now a single, merged Elite I and Elite II manual).

 

Tom

  • Thanks 1

Tom


2018 Oliver Legacy Elite #409 - 2017 Silverado 1500, 5.3L, 4x4 Z71, Dbl Cab, Std Bed


 

Share this post


Link to post
Share on other sites

Page 75 of my 2018 owners manual shows this

Black-Tank.thumb.png.39d402cd9af5d748af00d36c8aad6d0c.png


The Wanderer setup


TV: 2018 Toyota Sequoia


Trailer Options: Trojan AGM Batteries, 320w Solar package, 30 Amp Convenience pkg, 2000w Inverter, Omni-directional Antenna, Dakota Fiber-Granite, Opaque cabinet doors, Flagstone flooring, KTT mattresses, Inside Basement Access, Black Marble cushions, Anderson hitch, 30# propane tanks, Front and Rear Propane Quick Connects, Truma  Tankless Water Heater, Micro Air, Storage Basket, Bike Rack, Additional Awning, Custom Graphics for the trailer name

Share this post


Link to post
Share on other sites

Thanks for your reply. The illustration is very helpful, but my unit (#405) clearly does not have a valve there.  Also, since there was a previous post from hull # 409 with the same findings, I'm guessing we were in the same class of not having one. Oh well.


John & Eileen


2018 F150 EB Super Crew FX4


2018 Oliver Elite II Hull #405


 

Share this post


Link to post
Share on other sites

To put this issue to rest, the factory stopped installing the valve in the black tank flush line. There is still a back flow preventer.

  • Thanks 2

Steve, Tali and the dogs: Reacher, Lucy and Rocky plus our beloved Storm and Maggie (both waiting at the Rainbow Bridge) 2008 Legacy Elite I - Outlaw Oliver, HULL NUMBER: 0026 2014 Legacy Elite II - Outlaw Oliver, HULL NUMBER: 0050 2017 Silverado High Country 2500HD Diesel 4x4 

 

      ALAKAZARCACOCTDEFLGAIDILINIAKSKYLAMEMDMA       ABBCMBNSYTsm.jpg

 

 

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
Sign in to follow this  

×
×
  • Create New...