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There is an drain pipe air vent under the kitchen sink of a…

There is an drain pipe...
There is an drain pipe air vent under the kitchen sink of a mobile home trailer that lets sewer gas into the kitchen when the central air conditioner turns on. Do you know what may be the cause?
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Answered in 1 minute by:
11/7/2017
WCohn
WCohn, Journeyman Plumber
Category: Plumbing
Satisfied Customers: 1,745
Experience: Journeyman Plumber/Estimator
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My name is ***** ***** I look forward to helping you!

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Sounds like a failed air admittance valve

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Please leave me a five star rating

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Customer reply replied 9 months ago
How is it replaced or repaired?

It is unscrewed and a new one screwed in

WCohn
WCohn, Journeyman Plumber
Category: Plumbing
Satisfied Customers: 1,745
Experience: Journeyman Plumber/Estimator
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WCohn and 87 other Plumbing Specialists are ready to help you
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Customer reply replied 9 months ago
OK, thanks.
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WCohn
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