Valterra Flush King™ 45 Degree Reverse Flush Valve Attachment for RV, Camper, Trailer

Cleared my blockage very quickly. Easy to connect and operate. No chemicals needed.

This is the second type of back-flush attachment I have tried the first orange one with a 360 swivel blow apart on me while flushing, not the best experience. I figured this was due to the weakness of the swivel design, so this one being fixed does not have that potential flaw. I have to say on receipt I was impressed just how well made a sturdy this was, look stronger than the previous one. Having now given this a good test, I have to say, get one. The amount of additional waste I flushed was shocking, but I also noticed that I did not get any unpleasant smells while camping. So a really clean tank is a happy tank. I only have a small trailer, so smaller tanks, but back filling did not really take much time at all, flow from the hose attachment was significant and strong, enough to flush more out without back-filling. If you want a clean tank get one, then you'll wonder why you never purchased one sooner. Now for the observations; I found it a little annoying that the hose connection brings the hose right over the main dump valve on the device. While it does not stop you using it you do need to turn the valve handle 90 degrees to open it as the hose is in the way. Just wondering why they did not offset the hose connection and valve by 90 degrees, it does look like something you could do yourself, but its does not affect functionality. The other observation is one of time, to do the backflush it does take time and if its a single dump station you can end up with people waiting. I performed 2 full back flushes last time out which takes around 20-30 minutes with the initial dump, so allow for that. That said we waited for the trailer in front of us to dump and use their internal flush system, which was not much quicker anyway. Would recommend, but please get a separate hose for this only as we have seen people using their fresh water hose, which is not to be recommended, we have the bright orange hose so there's no mistakes. Happy camping

The best you can buy in my opinion! Keep your tanks clean with this backwash, easy to use, works great!

I beleive Valterra is a high quality brand and I own the Dominator sewer hoses that are used in conjuction with the Flush King. My RV does not have a built in black tank flush valve, so it was important that I have some way of flushing the black tank after camping trips. This product works well. I would caution anyone who uses a flush valve like this to make sure you keep an eye on water level or use a water regulator to determine the GPM. After figuring that out and using a timer, flushing your tank is easy. I usually do two to three flushes after each use, and I have not any ill effects.

Hi there, probably the best accessory I have bought for my RV as I don't have a black tank flush I use this to refill the black tank and flush it 2 to 3 times and it works perfectly I also use it to flush the gray tank and it's amazing how it works to remove residue from there as well I would highly recommend this product.