I never knew for sure if I was getting the black tank clean this removes any doubt.
This backflush valve was cheaper than the alternative name brand. The hose adapter wasn't put together well on delivery and leaked, but once tightened, it worked great to flush the tanks on my trailer. Happy I purchased it.
Probably the best accessory I have bought for my RV. Since I don't have a black tank flush, I use this to refill the black tank and flush it two to three times works perfectly! I also use it to flush the gray tank, and it removes residue easily. Highly recommend!
We had a bad clog. Tried different chemicals nothing worked. Got this item, only took a few minutes for the clog to flush down. Worth the money!
This functions as it should. Seems like it's durable and is easy to use. It's on our RV cleanout tank pipe well. Was a great value compared to stores near me.