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Old 08-29-2018, 02:08 PM   #1
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Help - Keep black tank flush vacuum break for half bath

2017 Dutch Star 4369 - The plastic Vacuum Breaker under the sink in the half bath was leaking. I replaced with a brass Watts LF-288. No leaks but we are getting black tank odors—terrible smell when traveling!

I need to find the original Vacuum Breaker and order it online. Hopefully at Amazon. Can anyone provide the Manufacturer Name and model number?

I called Newmar and all they could provide is the number 125337. Also 571 Vacuum.

Any assistance in identifying this vacuum breaker would be greatly appreciated.

Rex
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Old 08-29-2018, 02:26 PM   #2
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I just replaced mine with this one.
Valterra A10-3050 Check Valve/Vacuum Breaker
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 08-29-2018, 04:04 PM   #3
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Just install a backflow preventer between the vacuum break and the black tank. That will block sewer gas from even getting to the vacuum break.
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Old 08-29-2018, 04:49 PM   #4
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Do you mean a check valve instead of a back flow preventer.
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Old 09-02-2018, 12:27 PM   #5
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Use one of these on the outlet side of your Watts vacuum breaker. On the line going to the black tank.

https://smile.amazon.com/Valterra-P2...29+Check+Valve

Since replacing the junk plastic one that failed with the Watts brass version, wife has been complaining about odor when the black tank is around half full. Not realizing that the original plastic job had a check valve built in and the Watts did not.
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Old 09-03-2018, 03:34 PM   #6
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I installed the Valterra ˝ inch Check Valve on the outlet side of the Watts Vacuum Breaker. Once I removed the Brass vacuum breaker, it was obvious that black tank odors could escape through the cap end of the breaker. Hopefully, the check valve will stop the odors in the half bath. We will know when we travel next week.

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