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10-11-2020, 04:14 PM
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#1
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Senior Member
Join Date: Oct 2011
Posts: 363
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3051 black tank flush check valve location?
Anybody know where the check valve is located on a 3051? Black tank flush hook up is on curbside so I’m assuming somewhere in a bay near the water pump or inside a wall?
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Jason and Karen
2015 Forester 3051S
2016 Ford Fiesta-Toad
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10-11-2020, 05:02 PM
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#2
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Senior Member
Join Date: Dec 2012
Posts: 7,652
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Where ever it is it will be above floor level at least 6" above the toilet rim height. Check under the lav vanity.
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10-11-2020, 05:18 PM
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#3
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Kanadian Kamper
Join Date: Sep 2010
Location: Southern Ontario
Posts: 8,185
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Check under the bathroom counter up high for one of these.
Could be all black too.
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Ken and Terry
2018 Sunseeker 2430S-CD, nicely modified and carried by a 2017 Ford E450 Sport
Former Georgetown 330TS owner for 10 years with more mods than I can count, pushed by our 2017 GMC Terrain
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10-12-2020, 07:53 AM
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#4
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Senior Member
Join Date: May 2019
Posts: 4,330
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Answers so far seem to talk about the tank venting valve, but I read the question as asking about a check valve for the black tank flush line.
I’d like to know the flush line check valve typical location, too. Our flush input fitting drips a little while after I flush out the black tank. It’s probably just dripping clean water, but annoying nonetheless.
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2020 Sunseeker 2440DS on 2019 Ford E-450, Trekker cap, Topaz paint
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10-12-2020, 08:03 AM
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#5
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Senior Member
Join Date: Dec 2012
Posts: 7,652
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Quote:
Originally Posted by BehindBars
Answers so far seem to talk about the tank venting valve, but I read the question as asking about a check valve for the black tank flush line.
I’d like to know the flush line check valve typical location, too. Our flush input fitting drips a little while after I flush out the black tank. It’s probably just dripping clean water, but annoying nonetheless.
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Your confused. This is a typical factory black tank cleanout plumbing install.
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10-12-2020, 08:05 AM
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#6
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Senior Member
Join Date: Dec 2012
Posts: 7,652
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the backflow/vacuum breaker could be as previously posted or this.
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10-12-2020, 08:54 AM
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#7
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Senior Member
Join Date: May 2019
Posts: 4,330
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Quote:
Originally Posted by bubbles
Your confused. This is a typical factory black tank cleanout plumbing install.
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Perhaps you’re right. Our previous motorhome had no such elevated valve. The hose was connected directly to the black tank, and the check valve was in the tank fitting itself. I have not located any such elevated check valve on our new Sunseeker, under the kitchen counter, lavatory vanity, etc.
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2020 Sunseeker 2440DS on 2019 Ford E-450, Trekker cap, Topaz paint
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10-12-2020, 09:02 AM
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#8
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Senior Member
Join Date: Dec 2012
Posts: 7,652
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Quote:
Originally Posted by BehindBars
Perhaps you’re right. Our previous motorhome had no such elevated valve. The hose was connected directly to the black tank, and the check valve was in the tank fitting itself. I have not located any such elevated check valve on our new Sunseeker, under the kitchen counter, lavatory vanity, etc.
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It was an after market install kit (tornado etc.) in the previous unit. Sometimes the factory installed valve is hidden in the least expected place but it will be above floor level if installed correctly. It will be very similar to this.
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10-12-2020, 09:13 AM
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#9
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Senior Member
Join Date: May 2019
Posts: 4,330
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Quote:
Originally Posted by bubbles
It was an after market install kit (tornado etc.) in the previous unit. Sometimes the factory installed valve is hidden in the least expected place but it will be above floor level if installed correctly. It will be very similar to this.
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No. Previous motorhome was a 1995 Fleetwood, and the hose connection for the black tank flush was a fitting mounted directly on the side of the black tank. It was factory installed that way.
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2020 Sunseeker 2440DS on 2019 Ford E-450, Trekker cap, Topaz paint
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10-12-2020, 09:43 AM
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#10
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Senior Member
Join Date: Dec 2012
Posts: 7,652
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Quote:
Originally Posted by BehindBars
No. Previous motorhome was a 1995 Fleetwood, and the hose connection for the black tank flush was a fitting mounted directly on the side of the black tank. It was factory installed that way.
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Wrong assumption on my part. That's what I installed in a 2000 Georgie Boy myself. Not FR factory installation done that way today.
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10-12-2020, 09:45 AM
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#11
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,152
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Quote:
Originally Posted by BehindBars
Perhaps you’re right. Our previous motorhome had no such elevated valve. The hose was connected directly to the black tank, and the check valve was in the tank fitting itself. I have not located any such elevated check valve on our new Sunseeker, under the kitchen counter, lavatory vanity, etc.
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I have read on this forum some models have the black tank flush anti-siphon/check valve located behind a shower wall. Tough to get to at best!
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2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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10-12-2020, 10:20 AM
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#12
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Certified Curmudgeon
Join Date: Mar 2013
Location: Here
Posts: 3,999
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Quote:
Originally Posted by KJcachers
Anybody know where the check valve is located on a 3051? Black tank flush hook up is on curbside so I’m assuming somewhere in a bay near the water pump or inside a wall?
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Do not know where yours is however this is in my ‘18 2800. It is located under the bathroom vanity and behind a drawer. The exterior flush connection is below it. At least you can see what to look for.
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Mike Dropped
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10-12-2020, 10:41 AM
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#13
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Senior Member
Join Date: Jun 2020
Posts: 1,361
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The last time I used the black tank flush I found water on the interior floor. It was clean water and it was in the area of the tank check valve. This is the first time this has happened. Is this the first sign of a failed valve? It looks just like the picture Duckogram posted and is located behind the draws of the wardrobe next to the bathroom.
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10-12-2020, 04:26 PM
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#14
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Senior Member
Join Date: Aug 2013
Location: Edmonton, Alberta
Posts: 112
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The back flow valve on our Columbus Black Tank Flush is located inside the wall behind the shower stall. A real PIA if I have to replace! After turning off the water source for the black flush, there is a fair bit of water that drains back out to the curb, this is water that is in the PEX from the back flow valve to my connection Point. Fortunately, the water that drains back (Invariably on my hands as I undo the hose connection) is clean! Any water In the PEX from the back flow valve to the sprayer, drains into the black tank.
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10-12-2020, 05:05 PM
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#15
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Senior Member
Join Date: Nov 2015
Posts: 4,223
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On the 3051 the vacuum check thingy is behind a screw off panel in the forward most cabinet, bedroom, pax side. Open it up and the valve is right there. Very easy to get to or replace.
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BIRDS AREN’T REAL
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10-14-2020, 12:51 PM
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#16
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Senior Member
Join Date: Jul 2017
Location: SO-CAL
Posts: 503
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not sure why you need to know this.
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RETIRED U.S. NAVY
2017 FORESTER 3051S
IN SO-CAL
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10-14-2020, 01:08 PM
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#17
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Site Team
Join Date: Sep 2014
Location: Northen IL
Posts: 8,336
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Quote:
Originally Posted by Philkaty
not sure why you need to know this.
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Because they can stop working and need to be replaced.
Or as many people have reported, they can be installed backwards from the factory.
It's never a bad idea to know more about your RV and where things are located and how they work.
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10-14-2020, 02:58 PM
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#18
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Senior Member
Join Date: Jul 2017
Location: SO-CAL
Posts: 503
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Quote:
Originally Posted by Iwritecode
Because they can stop working and need to be replaced.
Or as many people have reported, they can be installed backwards from the factory.
It's never a bad idea to know more about your RV and where things are located and how they work.
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True, I learn something new every time we go somewhere. Remember an Expert is someone that is done learning...
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RETIRED U.S. NAVY
2017 FORESTER 3051S
IN SO-CAL
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