Quote:
Originally Posted by German Shepherd Guy
OK, I will admit ignorance. What does Hepvo mean? How does it keep odors from coming up from the gray tank?
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Google is your friend my friend 
Click the link 
https://hepvo.com/hepvo-waterless-valve/
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Hans & Bobbi
2013 Keystone Cougar 21RBS
2006 VW Touareg V10 TDI
2005 VW Touareg V8
2008 VW EOS
1998 Porsche 993 S
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