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.

If you own a rv or travel trailer this is a must have. I'm new to trailer ownership and want to keep my rig in good working order. It is constructed well and easy to attach to your drain connection. It does look different from the image shown on site but it does rotate to make it easier to use. The length is good if you have room and it does clean well. The clear tube makes it easy to see if your black or gray tanks are cleaned out. It is easy to over fill the tanks with the back flush so get a gauge or keep a close eye on it. This kit has made emptying the tanks so much easier and more efficient. Very pleased with this product

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

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.

This thing works amazing like other reviews say. Iv tried the wands and all the tank blaster chemicals, nothing compairs to how well this works. It gets more crud out than ever imagined that was still in there. I did a regular dump after camping and then used this to do a back flush. I was amazed on how much was still left in the tank and come out after the back wash. The pressure and vortex this makes once you open the gate to let all the water out is very impressive and satisfying to watch. I did the back wash 4 times to get 10 years of crap out of my tank. I like how it swivels as well. The first time you go to swivel it, it will be rather hard but it gets easier as it gets worked in.

Highly recommend for anyone with an RV. This allows you to back flush your tanks and do a more thorough job in draining/flushing the mess out of both your black and grey tanks. Use in conjunction with a flow meter so you don't over fill the tanks. Flushing the tanks is a time consuming process though so mayne skip this step if there are people behind you waiting to use the dump station. If you're at a campsite with full hookups and sewer, then take advantage of that and make the time to do a few flushes.