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THETFORD RV Drain Valve Lubricant - 24 oz 15843

4.5 4.5 out of 5 stars 1,664 ratings

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  • [VERSATILITY]: Thetford's Drain Valve Lubricant is designed to work with RV and boat drain valves
  • [FUNCTIONALITY]: Coats the plumbing lines for a complete outflow of the tank contents
  • [UTILITY]: Prevents sticky valves, ensuring a smooth operation during the emptying process
  • [CONVENIENCE]: Formulated to work with grey or black water tanks
  • [SAFETY]: Drain Valve Lubricant is 100% biodegradable and safe for all waste treatment systems
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From the manufacturer

Thetford RV Drain Valve Lubricant

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.

  • Lubricates holding tank systems and drain valves from the inside
  • Restores easy valve operation
  • Coats plumbing lines for smooth tank evacuation
  • Works in both grey and black water tanks

About Us

As the manufacturer of mobile sanitation products for the RV, marine, camping and truck markets, Thetford Corporation makes mobile living a more pleasant experience. Thetford products include complete lineups of:

  • Lightweight, low-water-use toilets permanently mounted in RVs, boats or trucks
  • Hand-carried, fresh-water-flush, self-contained portable toilets that have a multitude of uses
  • Specially-formulated waste holding tank deodorants and treatments used with these toilets
  • Innovative, multi-capacity tote tanks
  • Other products that make mobile living more convenient, quicker, cleaner and easier

Product Description

Thetford's Drain Valve Lubricant is specially formulated to lubricate all waste treatment systems. The 100% biodegradable liquid work with both black and grey water tanks, on RVs or boats. Drain Valve Lubricant coats plumbing lines, preventing sticky valves and restoring the smooth operation of waste evacuation.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.

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THETFORD RV Drain Valve Lubricant - 24 oz 15843


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What's in the box

  • RV Drain Valve Lubricant - 24 oz - Thetford 15843
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    Customer reviews

    4.5 out of 5 stars
    4.5 out of 5
    1,664 global ratings

    Customers say

    Customers like the performance, ease of opening, and quality of the auto accessory. For example, they mention it works well, it helps with hard opening and closing, and it's a reliable product to keep valves lubricated. That said, opinions are mixed on leakage and stickiness.

    AI-generated from the text of customer reviews

    63 customers mention48 positive15 negative

    Customers like the performance of the auto accessory. They mention that it works great, makes the valves function better, and hasn't lost any water from the bowl.

    "...Will use again in a few months per direction. Good company with good product. Happy enough to recommend its use" Read more

    "I like the product it seem to have loosened up my tank drain valves on my RV they work better after using this product." Read more

    "Quality product." Read more

    "...The dump handles never really worked right even when it was new and soon go to the point where I couldn't close them all the way...." Read more

    13 customers mention10 positive3 negative

    Customers like the ease of opening the auto accessory. For example, they say it helps the valves open and close with ease, and it helps with the hard opening and closing of the lever. That said, some say it's a temporary fix.

    "...They are opening and closing with ease now. Gray 1 was not closed completely during those 5 days, so we’re working on that one today...." Read more

    "...I did hafta use it several times, but now I can open and close it easily. I ended up using three bottles of this lubricant to get the job done...." Read more

    "...They opened like new after a short trip..." Read more

    "This stuff helped get a sticky, almost stuck valve loosened and easier to open. I plan on buying more" Read more

    5 customers mention5 positive0 negative

    Customers are satisfied with the quality of the drain valve lubricator. They mention it's a reliable product that does a great job lubrating the valves.

    "Good, reliable product to keep valves lubricated on rv drain systems" Read more

    "Helped with a stiff drain valve. Couldn't completely fix and ended up replacing it...." Read more

    "Lubricates travel trailer drain valves." Read more

    "Was shipped to me extremely quickly. This product does a great job lubricating the valves in my RV. This is a must have product." Read more

    4 customers mention4 positive0 negative

    Customers find the auto accessory easy to operate. They mention it makes it easier to operate the drain valves.

    "...They were easier to operate then when the trailer was brand new and most importantly, the trickle of gross water stopped coming out...." Read more

    "This is the best stuff for sticking valves and very easy to use...." Read more

    "I’ve used this product before and it really makes it easier to operate the drain valves." Read more

    "Love it. Definitely works and easily noticed by the ease and smoothness of the operation of the valves." Read more

    4 customers mention4 positive0 negative

    Customers appreciate the value of the auto accessory. They say it saves them money and time.

    "...Will use on regular basis.Saved me a lot of work." Read more

    "Good price, great value" Read more

    "Great price for this size, works well" Read more

    "This product saves you money!..." Read more

    12 customers mention6 positive6 negative

    Customers are mixed about the stickiness of the product. Some mention it eliminates stickiness and keeps the RV toilet valves from sticking. However, others say that it helps somewhat but still encounters valve sticking issues.

    "...While storing I leave some in the toilet. Have not had any sticking issues since using regularly. Highly recommend!!!" Read more

    "...First use no noticable improvement in sticky valve...." Read more

    "...The levers aren’t sticking at all now. It’s become part of my regular routine." Read more

    "...tank valves (3) on my Montana 5th wheel were difficult to pull, very sticky. I was concerned about breaking them...." Read more

    9 customers mention3 positive6 negative

    Customers are mixed about the leakage of the auto accessory. Some mention that they have not had any problems with seals leaking or valves not functioning, while others say that it has a very small leak.

    "The bottle came in frozen and busted so it was leaking and I threw it away." Read more

    "...I used in both grey and black tanks, eliminated small leak and improved open /close sealing in valves." Read more

    "...the trailer was brand new and most importantly, the trickle of gross water stopped coming out...." Read more

    "...This freed them up. My toilet seal started leaking also and I used thetford toilet seal conditioner and didn't have to replace seal." Read more

    3 customers mention0 positive3 negative

    Customers are dissatisfied with the durability of the auto accessory. They mention that it's not long lasting, the bottle came in frozen and busted, and it'll leak.

    "The bottle came in frozen and busted so it was leaking and I threw it away." Read more

    "Not sure yet how to rate this product. It's not a one time use product or wasn't for me. First use no noticable improvement in sticky valve...." Read more

    "Not long lasting..." Read more

    Actually worked!
    5 Stars
    Actually worked!
    Long story short, I got a quote to replace both the black and grey valves on our 2017 5th wheel that we bought now. The dump handles never really worked right even when it was new and soon go to the point where I couldn't close them all the way. To prevent the trickle of nasty water from coming out I added external dump valves which worked, but it still bothered me that the factory dump valves were not working right.I got a quote for hundreds of dollars to replace both valves (RV center in Kelso, WA), but decided to buy this stuff first. I dumped a bottle in the black and a bottle in the grey tank and added water. (Yea, I didn't follow the instructions to the letter). As I started working the black valve in and out, I thought I broke the cable because it suddenly had very little resistance. Same with the grey valve.The valves were not broken, they were just working as designed. They were easier to operate then when the trailer was brand new and most importantly, the trickle of gross water stopped coming out. Just my experience but I think I've only done one other product review on here so this stuff really impressed me!
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    Customer image
    5.0 out of 5 stars Actually worked!
    Reviewed in the United States on December 7, 2020
    Long story short, I got a quote to replace both the black and grey valves on our 2017 5th wheel that we bought now. The dump handles never really worked right even when it was new and soon go to the point where I couldn't close them all the way. To prevent the trickle of nasty water from coming out I added external dump valves which worked, but it still bothered me that the factory dump valves were not working right.

    I got a quote for hundreds of dollars to replace both valves (RV center in Kelso, WA), but decided to buy this stuff first. I dumped a bottle in the black and a bottle in the grey tank and added water. (Yea, I didn't follow the instructions to the letter). As I started working the black valve in and out, I thought I broke the cable because it suddenly had very little resistance. Same with the grey valve.

    The valves were not broken, they were just working as designed. They were easier to operate then when the trailer was brand new and most importantly, the trickle of gross water stopped coming out. Just my experience but I think I've only done one other product review on here so this stuff really impressed me!
    Images in this review
    Customer image Customer image
    Customer imageCustomer image
    61 people found this helpful
    Report

    Top reviews from other countries

    Dv
    5.0 out of 5 stars This really worked Just like it said it would
    Reviewed in Canada on December 5, 2017