No-Stick Drain Valves

November 25, 2015
Filed under 10-Minute-Tech

 

Even with regular use of expensive drain-valve lubricants that are poured in tanks, I’ve struggled for years to operate sticky dump valves. Removing and lubricating at least the black-water valve once a year, and sometimes even replacing valves, was just a temporary fix. Then I came up with a simple and very effective solution: 1) With the valve closed, drill a small hole on the handle end of the valve. 2) Insert the strawlike nozzle that is typically supplied with spray lubricants into the hole and fill the cavity behind the valve slide gate with the lubricant. 3) Operate the valve several times to be sure to distribute the lubricant, which will make the valve easy to open and close. 4) Seal the hole with a small screw. 5) After a number of uses, when you notice that operating the valve takes more effort again, relubricate. I use white lithium grease or a silicone lubricant.

I wish I had come up with this idea 25 years ago! I can tell you from firsthand experience that it is not fun to lie down under the trailer at a dump station and remove a firmly stuck valve when your RV’s black tank is full.

Ralph Clark, Albuquerque | New Mexico

 


 

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Comments

One Response to “No-Stick Drain Valves”

  1. Nathan Keith on November 5th, 2016 10:40 pm

    A great idea that needs one minor modification I hope you will change to a food safe grease. You would not pour motor oil or other petroleum products down the drain for all the environmental and legal reasons, and that is where the grease is going.

    I am going to use your idea and try non-stick cooking spray.

    [Reply]

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