waste valve closing problem

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Joined
Nov 21, 2012
Posts
21
Location
Indiana
I have an RV with an enclosed belly where I cannot easily access the waste valves.  I have had to remove the black water waste valve before to clean out the groove where the blade seals inside the valve.  It had a build up of fibrous material like hair and paper in the groove where the blade seals.  The valve does not leak but it is getting hard to get it closed all the way.  I am looking for a simple way to clean the valve without removing it.  Is there a brush made on the end of a flex extension that I can use with a battery drill? It would have to reach about 5 feet. Any other ideas?
 

Rene T

Site Team
Joined
May 20, 2011
Posts
19,479
Location
Farmington NH
Are your valves operated by a steel cable? I had the same issue. I ended up by removing the cables on all three of my tank valves and was able to drill a small hole through the frame and I installed long extensions for the valve stems.
Another thing you could do like many of us do is install a twist on valve on the end of your discharge pipe. Then mount the cap on that. This serves as a back up valve in case one of your tank valves leak a little. When you're ready to dump, remove the cap, connect your sewer hose, then open that valve. Any leakage behind that that valve will indicate a tank valve leaking by a little.  You can also close that valve, open up the tank valve that's leaking and 1/2 fill the tank with water. Let is sit for a few days. This may dissolve anything in the valve track. You can also add a septic tank cleaner.

https://www.amazon.com/Valterra-T58-Twist-On-Waste-Valve/dp/B000BGHYJS

https://www.amazon.com/Roebic-Laboratories-Septic-Treatment-32-Ounce/dp/B000BQU7IS/ref=sr_1_4?gclid=EAIaIQobChMIz973j_7Q4wIVBZ-fCh0KrgrkEAAYAiAAEgLOwvD_BwE&hvadid=313632841677&hvdev=c&hvlocphy=9002488&hvnetw=g&hvpos=1t2&hvqmt=b&hvrand=3107639307519893883&hvtargid=kwd-331092180625&hydadcr=21445_9712267&keywords=septic+tank+treatment+roebic&qid=1564089152&s=gateway&sr=8-4
 

grashley

Well-known member
Joined
May 7, 2015
Posts
6,591
Location
Western Kentucky
I agree with Rene.  I have a leaky gray valve, but that "end" valve keeps everything in place until the hose is attached and I am ready to dump.  No leakage that way.

In direct answer to your question, a dryer vent brush has bristles and is 4 inch diameter on a cable handle.  You may want to look at that.

https://smile.amazon.com/Brushtech-B68C-10-Feet-Dryer-Cleaning/dp/B000RL6HFY/ref=sr_1_11?crid=80VMUIBG68BY&keywords=dryer+vent+brush&qid=1564105456&s=gateway&sprefix=dryer+vent%2Caps%2C153&sr=8-11
 

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