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

Perfect product for its purpose; shoot water into tanks and flush until clean. It absolutely works. I have flush valves in my Black Water Tank but using this valve helps to flood and flush your black and Grey tanks. I flushed the black then the Grey. I was concerned by the leaking videos and complaints, I used Teflon tape both valve and hose connections; no leaks, no issues. I'm hoping to upload a video for everyone to see. Cheers.....

I've had this for 2 plus weeks and been procrastinating. But today, I am "alone" with no neighbors to my left, right, front or back so my best shot at first time with no witnesses :) . Naturally, no issues. As a solo, with no one inside to check things and not wanting to leave outside, I was cautious. My black tank is 22 gallons so 80% would be 17 but I started with 2, then 4, etc. At 8 gallons, I was getting all clear, but went to 12 and still clear. Similar with gray except I only went to 8 of 34 as it was clear and no suds. I had no issues, but new to me RV. Previous owner said they didn't use toilet, but ??? I use no chem, just lots of water and no paper in toilet. No smells and no issues, but I want to keep it that way. This is far easier than the Sani-flush!

THIS IS A MUST HAVE FOR ANY RV'ER. GOT A 10FT WATER HOSE I LEAVE ON IT, ALONG WITH SEW HOSE! SO FAST SO CLEAN SOOOOO NICE!!! THE CLEAR WINDOW MAKE IT EZ TO SEE WHAT YOU'VE BEEN MISSING. YOU'LL BE HAPPY YOU GOT IT. OTHER CAMPERS WILL ASK YOU ALL ABOUT IT SAYING THEY HAVE TO GOT ONE.

Anyone paying to have someone clean out your takes because of a little fecal matter issue.....This Flush king is amazing and will save you so much money and keep your hands clean....When somewhat, lets not get crazy and not wear gloves

Overall this is an indispensable item on my RV accessory list. I try to keep my black tank as clean as possible so I don't have any build up. For backflushing the Flush King is perfect because you can see the contents emptying from the tank. The hose attachment has a valve that does a reasonably good job turning the water on and off. I had to knock one star off because of a couple nitpicks. The valve that connects to the water hose probably should have some teflon tape installed to avoid leaks. Fortunately you can install teflon tape on your own. Also, if the water hose valve is open and water is running you must have either your black tank valve open or the flush valve open. Both cannot be closed otherwise pressure will build up and you will get leaks. Aside from these minor issues, this is a totally legitimate product that makes a big difference keeping the black tank cleaner. Certainly more clean than just using an onboard black tank rinse system. I'm giving this product my recommendation and two thumbs up.

Works great. Vacuum break leaks a little, but no big deal. Would get again.

This great product. I have 2017 Salem cruise light. We bought the trailer used. We noticed that the gage wasn't reading right on our black, at least that was our thoughts.this trailer does not have a flush valve or spickit, so trying to get our black water emptied, we would have to fill up a 5gl bucket of water and pour down the toilet to flush it out completely. We thought it was cleaned when the wat would come out clear, and the gage would still read full! I couldn't figure it out. Paid over $200 for someone to come out and flush it.then I seen a TikTok video of this. Well, I thought it would be expensive. I looked for it on Amazon and it wasn't as expensive as I thought. The flush king saved us from having to pay another $200 to have someone come and flush it again. The flush king is simple for both me and my disabled daughter can use. Just connecte it as it is shown, hook a garden hose up and open the valve. That simple. To clean the part was even more simple. Close all your holding tanks, turn water on (with the flush king valve closed) wait a couple of seconds, open the flush valve on the flush king and and keep the water running until rinsed thoroughly. This not only cleans the neck of your holding tanks and the flush king, but your septic hose (stinky slinky) too. If you are a full time RVer, this is a must have. There is also an adjustable sprayer valve for cleaning the tank. I would give this product a 10 out of 10. Much cheaper than having the septic guy do it.❣️

I finally had the opportunity to use my week old purchase. I saw this product as I was scanning YouTube and found a 55 minute video (yes, long but found it to be very worth my time for this important chore), put on with an employee of ‘Kleen Tank’ (KleenTank.com), a business that flushes out holding tanks for clients that hire them to clear out tanks for many different reasons. After purchasing a water flow gauge for my garden hose (as they recommended, for obvious reasons), and the required ‘Flush gate’ (above), I took my trailer to a local dump site rather than wait to do it at a campground dump location and risk a back up line that would push me beyond a typical timeline to complete the task. It went perfectly the first time with zero issues. The flush gate valve is so slick and reverse filling both tanks went quicker than I expected (roughly 1 gallon per 10 seconds, for me). My wife was in the trailer just this 1st time, to make sure we didn’t overflow anything as it progressed filling. I wanted 80% of the tank filled as recommended ( 30 gallon tank so 24 gallons for my rig). We stopped filling at 22 gallons when she called out to me as it filled. We ended up doing 2 flushes until clean on the Black, and then 2 on the gray. This system is really a quality accessory to get, then keep my holding tanks maintained properly. Check out the website mentioned above, it’s important to know that they recommend NOT using a Black Tank additive to break down solids, as it becomes a ‘pancake mix’ type mud in your tank and if allowed to dry AT ALL, it’ll be very tough to clean with a normal flush at a campground dump. More important info on that company’s website and worth the time, trust me. If you use any type of RV and need to use a dump station, get this accessory along with a water flow gauge. You’ll be very happy in future rinsing chores……..I promise!

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

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.

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.

This product serves two purposes, provided you leave it connected while camping. First, the gate valve traps that waste water that loves to slowly trickle down the pipes, once you have emptied your tanks. So now when you connect your sewer hose for your next tank empty chore, you don't get that wonderful little burp of waste water all over your hands when you open the factory cap, as it will be trapped behind the gate valve. Second, when comes time you want to make sure your black water tank is as empty as it can be, you can now hook up your water connection and force clean water back into your tank to flush out "bonus material" that has been left behind. If you do this flush and drain several times, you should get most of the bonus material removed. Just be careful, to never force more clean water into your black tank, than the black tank can hold. No explanation needed for this precaution.