Twist on Waste Valve Question

I have traveled with one for years and never had a problem. Some clerks are clueless.

Keep mine on all the time. Leaking gray tank. I turn the handle straight up to lessen drag.

Sounds like the clerk didn't know what he was talking about to me. I put one of those on my 5er last year because of a nuisance leak (randomly a few ounces to a gallon of water when I opened the cap). We've run a few thousand miles since, I'm not worried about it causing an issue.

Be sure the drain pipe hangers are close enough to the outlet to support the extra weight. If too far away add a hanger for support.

I have one as well and it never comes off. If I had a very light trailer that gets shaken by road rash I might consider removing it.

BluegrassBill wrote:
Be sure the drain pipe hangers are close enough to the outlet to support the extra weight. If too far away add a hanger for support.

Exactly!
And just maybe the clerk knew what he was talking about. So many people are too quick to judge. :R

How much does the valve weigh?
If you had the cap on and a gallon of water in the pipe, wouldn't that weight pull the pipe loose from the black tank?

Chippendale wrote:
Just purchased a Valterra twist on waste valve as a temp fix for my leaking black tank valve until I can get home. On the way out of the store, the clerk warned not to travel with it on the drain pipe because the weight of it might cause excessive vibration that could cause the sewer drain pipe to break loose from the black tank. Seems like that defeats the purpose of purchasing it. Anyone out there have experience pro or con with this product?

Sounds like B.S. advice to me! Some clerk needs to get some new RV training:):)

WOW....everyone is so quick to call clerk an idiot.

Sound like clerk was giving some insight that could apply. :S

Seeing as none us know OPs sewer drain line set up OP might head clerks advise and at least check it the weight of twist on valve does cause problem.
Simple...install it and then using ones hand wiggle the valve up/down--back/forth


I have an extra valve permanently installed on drain line because of the exact reason clerk warned about (except I figured it out on my own).....plus it stuck out/down to far to leave on while traveling.
SO I also questioned why use it if I had to remove hence the permanently installed one on horizontal section before drain pipe turned outward.

I have one that has been on for 9 years No problems. I use it as a safety valve,
after forgetting to close the grey tank valve after dumping. Luckily it was not the black!