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Old 05-25-2012, 10:58 AM   #1
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Drain Valve Lubricant

The valve on our grey tank valve is very sticky and hard to operate. Am curious to know if the stuff sold in dealer accessory shops (i.e. Thetford Drain Valve lubricant) actually works. I would appreciate comments, pro or con, from anyone with experience with valve lubricants.

...VTX-Al
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Old 05-25-2012, 11:00 AM   #2
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Quote:
Originally Posted by VTX Al
The valve on our grey tank valve is very sticky and hard to operate. Am curious to know if the stuff sold in dealer accessory shops (i.e. Thetford Drain Valve lubricant) actually works. I would appreciate comments, pro or con, from anyone with experience with valve lubricants.

...VTX-Al
I've used pump and seal lube.
Seems to help.
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Old 05-25-2012, 11:45 AM   #3
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Can you just use a silicone lubricant spray or WD40?
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Old 05-25-2012, 12:54 PM   #4
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Can you just use a silicone lubricant spray or WD40?
...Now why didn't I think of that ??? I use WD40 for just about everything ! Couple squirts and the things works perfectly now. Thanks

...VTX-Al
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Old 05-25-2012, 12:59 PM   #5
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If you can get to the valve gate and seals, you can use the "OLE" standby Vasoline. I keep a jar of the stuff in my sewer box that I keep all of my sewer fittings in, works great. lubricate the valve shaft with WD-40.
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Old 05-28-2012, 11:50 AM   #6
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Two things here: IMO: WD-40 is not a lubricant. WD-40 is actually a very light weight petroleum based product that uses water as a carrier. Vaseline is harmful to most "rubber" type gaskets, it will actually deteriorate the gasket, O-ring, etc. There are some excellent lubricants out there for "rubber" type gaskets, O-rings, etc. I believe the Thetford branded lubricant is meant to be placed into the grey/black holding tanks and lubricates the seals as the water is draining out. My local RV repair guy told me he uses the Thetford ONLY with clean water in the tanks and moves the valve in/out as the water passes out of the tanks. I recently replaced both valves on my unit (2005) and the seals were as hard as concrete.
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