4.5 5 14
Thetford Drain Valve Lubricant - 24 oz.
Item No. 4179
Thetford Drain Valve Lubricant - 24 oz. is rated 4.4 out of 5 by 19.
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Thetford Drain Valve Lubricant - 24 oz.

Thetford Drain Valve Lubricant - 24 oz. is rated 4.4 out of 5 by 19.
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Item No. 4179
$6.64 $10.79
Save $4.15 ( 38% Off )
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Additional Information
Thetford Drain Valve Lubricant solves holding tank problems.

Here's an ounce of prevention in a 24-ounce bottle. Our special formula prevents seal wear, sticky drain valves and keeps all the plumbing lines operating smoothly.
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  • Non-staining, formaldehyde-free and environmentally safe
  • Non-staining
  • Made in the USA
Unit Weight 1.66 lb
Brand Thetford
MFG Part No. 15843
Rated 5 out of 5 by from worked After taking a couple of sewage showers, one treatment restored full closure of the valve with no more seepage! For a valve that won't close all the way, this is good stuff!
Date published: 2013-07-08
Rated 5 out of 5 by from Great product. I have used this for quite some time and have never had issues with stuck valves.
Date published: 2012-04-02
Rated 2 out of 5 by from Didn't do much I could not tell if this product did anything. Instead, I pour a half cup of cooking oil into an empty tank, flush it in with a little water, then go exercise the valve. Worked better than this stuff for me.
Date published: 2020-12-04
Rated 5 out of 5 by from Good Product I've used this product for years. It lubricates the valves on the gray and black tanks. Have had no problems with the valves since using this.
Date published: 2021-06-29
Rated 5 out of 5 by from was stuck...now open Frees up a stuck drain valve that hadn't been used for a long time.
Date published: 2021-09-07
Rated 5 out of 5 by from keep flushing Seems to work well. hard to know lol It is a bit to soon to tell
Date published: 2020-08-02
Rated 5 out of 5 by from Nice product I've found this to work well when used as described.
Date published: 2021-07-22
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How do you use this product ?

Asked by: Anonymous
you pour 1/5 of the bottle into the holding tanks after emptying them and closing them back up. They will lubricate the tanks.
Answered by: cw_staff
Date published: 2019-09-08
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