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04-01-2017, 10:54 AM
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#1
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Senior Member
Join Date: Sep 2004
Posts: 1,838
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Black Tank Rinse Vacuum Breaker
The Vacuum Breaker for our Black Tank Rinse is leaking when water is first turned on. What is the purpose of the green tape? See photo.
Since Newmar will no longer send warranty replacement parts I need to find one elsewhere. Does anyone know of an online source? And, are these vacuum breakers universal?
__________________
2022 New Aire 3545
Huey Pilot — Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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04-01-2017, 11:06 AM
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#2
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Senior Member
Join Date: Jun 2012
Location: AB
Posts: 7,587
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You can replace this plastic one with a much better brass device that is available at any Home Depot, Lowes, Ace etc. They are used on every residential hot water tank. Very common.
You will need to also buy two 1/2" NPT Close Nipples to go from the female to male connection. It will be a direct replacement. No other mods required.
__________________
2019 Unity LTV CB, pushed by a 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake
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04-01-2017, 05:53 PM
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#3
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Senior Member
Join Date: Sep 2004
Posts: 1,838
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Does anyone know why Newmar wrapped the vacuum breaker with green tape?
A guy at Camping World said the tape was causing the leak, but I doubt it.
__________________
2022 New Aire 3545
Huey Pilot — Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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04-01-2017, 06:02 PM
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#4
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Jun 2016
Location: Odessa, Tx.
Posts: 848
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you might remove the green tape and see what happens 
__________________
John and Sue from W. Texas
2001 DSDP, 3126B Cat
"the Oilfield PAID me to retire, so I did" :-)
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04-01-2017, 06:05 PM
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#5
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Senior Member
Join Date: Sep 2004
Posts: 1,838
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Since water is leaking out from underneath the tape I am reluctant to remove it. It might shoot water everywhere. I think I will wait until I get a replacement before removing the tape.
Our previous Tiffin Allegro Bus had the same tape on the vacuum breaker so I assume it has some function.
__________________
2022 New Aire 3545
Huey Pilot — Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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04-01-2017, 06:05 PM
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#6
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Senior Member
Join Date: Jun 2012
Location: AB
Posts: 7,587
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Quote:
Originally Posted by LK23
Does anyone know why Newmar wrapped the vacuum breaker with green tape?
A guy at Camping World said the tape was causing the leak, but I doubt it.
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Not sure why they would wrap that valve but if it did in fact cause it to leak, if you remove the tape the leak should quit.
I replaced that plastic valve twice after it leaked into my basement. Fortunately I had a plastic tub with my spare fluids just below the point where it came through so did not flood the basement. Second time around, it was replaced with a brass valve. (At a third the cost of the plastic valve)
__________________
2019 Unity LTV CB, pushed by a 2013 Honda CRV, BlueOx Baseplate, Aventa Bar & Patriot Brake
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04-01-2017, 09:10 PM
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#7
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Member
Join Date: Mar 2011
Posts: 92
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where is this valve located? I have a 2016 LADP - I have not located this valve - my black tank rinse is in the wet bay in the basement -
thanks
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04-01-2017, 09:14 PM
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#8
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Senior Member
Join Date: Mar 2015
Posts: 2,984
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Common sense would suggest that painters tape on a plumbing fixture is not the way it should properly work...
Get the brass replacement.
__________________
'04 Newmar Mountain Aire 4016
400ISL/Freightliner
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04-01-2017, 10:06 PM
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#9
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Senior Member
Join Date: Sep 2004
Posts: 1,838
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The vacuum breaker is under the sink in the half bath in mid coach.
__________________
2022 New Aire 3545
Huey Pilot — Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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04-02-2017, 08:10 PM
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#11
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Senior Member
Tiffin Owners Club Freightliner Owners Club
Join Date: Aug 2014
Posts: 1,899
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I never liked having this inside the RV, so I removed mine and replaced it with a 90 deg elbow.
People will say that you need this per plumbing code...and if you wanted, you could install a vacuum break on the hose connection in the wetbay.
Your fittings can be unscrewed by hand. Get a 90 Deg "Street Ell", it has male threads on one side, and also get a close nipple to give you male thread on the other side.
Regards,
Dan
__________________
2014 40QBH Phaeton DP Cummins 380HP ISL, Freightliner XC, 2019 Jeep Grand Cherokee Trailhawk TOAD
Blue Ox Aventa tow bar, SMI Air Force One -Cave Creek, AZ.
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04-03-2017, 04:10 PM
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#12
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Senior Member
Newmar Owners Club Freightliner Owners Club
Join Date: Aug 2015
Posts: 3,180
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Quote:
Originally Posted by LK23
Does anyone know why Newmar wrapped the vacuum breaker with green tape?
A guy at Camping World said the tape was causing the leak, but I doubt it.
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The one in my 5th wheel would get loose and leak. The cap twists on...
Maybe the tape is supposed to keep it from backing off and leaking. I haven't stuck my head under the sink to check our Ventana yet..,or to see if the cap can be loosened or tightened by a simple twist.
__________________
Charlie & Ronni
2016 Ventana 4037
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04-08-2017, 10:06 PM
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#13
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Junior Member
Join Date: Mar 2017
Location: Sparks, NV
Posts: 8
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Here's a link to the installation instructions utilizing the B&B 571 Vacuum Breaker which details that a leak can occur if the water pressure is too low to seat the valve (page 4).
http://www.bandbmolders.com/files/Th...2_Install_.pdf
In this link in post 12 there is a sketch of a vacuum breaker and how it basically works. This is a good thread detailing a leak and many reply discussions.
http://www.irv2.com/forums/f54/maide...ht-332510.html
BTW, i bought a new B&B 571 Vacuum Breaker and I bought an additional 90 degree elbow with 1/2" male fittings. If the new one leaks I can change it out to with the elbow and continue to flush the black tank. As suggested, it's a code thing to have it from the factory. You can put an elbow on and use a water hose mounted vacuum breaker. They're available at HD and other hardware stores.
If yours is leaking significantly, it's probably bad. It's common.
Hope this helps...
Art
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04-09-2017, 07:29 AM
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#14
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Senior Member
Join Date: Sep 2004
Posts: 1,838
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Thanks for that information. Evidently the B&B vacuum breaker is prone to leaking when water pressure is first applied.
Valterra makes a clear plastic vacuum breaker. Does anyone know if it leaks as well?
__________________
2022 New Aire 3545
Huey Pilot — Vietnam 1971-72
Author of: ACE, The Story of Lt. Col. Ace Cozzalio
and: The Aviators: Stories of Helicopter Combat in Vietnam 1971-72
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