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Topic: Black water valve repair/replace (Read 199 times) previous topic - next topic
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Black water valve repair/replace
Someone here recently commented about replacing either the valve or just the seals and mentioned it being difficult to manage.

When I replaced our valve a few years ago my main problem was keeping the seals in place when reassembling. This link indicates you should coat them with a grease on both sides like Dow-Corning 111.

Sticky black water valve perplexes – RV Travel

Jim
Re: Black water valve repair/replace
Reply #1 –
You can also use vaseline, BUT - long term, any petroleum based product will degrade a neoprene rubber.  For something like the seals, it would take some years.  Mine are two years old since changing, using vaseline, and so far they are fine.  If you have a dive shop nearby, you can get silicone O-ring lube.  It works like vaseline but will not degrade the rubber.

Ken F in NM
'08 MB
Re: Black water valve repair/replace
Reply #2 –
Quote from: Kenneth Fears  - 
You can also use vaseline, BUT - long term, any petroleum based product will degrade a neoprene rubber.  For something like the seals, it would take some years.  Mine are two years old since changing, using vaseline, and so far they are fine.  If you have a dive shop nearby, you can get silicone O-ring lube.  It works like vaseline but will not degrade the rubber.
In a pinch, dielectric grease will also work, having a silicone base.

Larry
Larry
2003 23.5' Front Lounge, since new.  Previously 1983 22' Front Lounge.
Tow vehicles  2020 Jeep Wrangler Rubicon, 2001 Jeep Cherokee
Photo Collection: Lazy Daze