--- product_id: 148413258 title: "Valterra Flush King™ 45 Degree Reverse Flush Valve Attachment for RV, Camper, Trailer" brand: "valterra" price: "£67.74" currency: GBP in_stock: true reviews_count: 6 url: https://www.desertcart.co.uk/products/148413258-valterra-flush-king-45-degree-reverse-flush-valve-attachment-rv store_origin: GB region: United Kingdom --- # 45° Angle Design Leak-Proof Connection Sewer Tank Rinser Valterra Flush King™ 45 Degree Reverse Flush Valve Attachment for RV, Camper, Trailer **Brand:** valterra **Price:** £67.74 **Availability:** ✅ In Stock ## Summary > 🚐 Keep Your RV Fresh and Clean with Ease! ## Quick Answers - **What is this?** Valterra Flush King™ 45 Degree Reverse Flush Valve Attachment for RV, Camper, Trailer by valterra - **How much does it cost?** £67.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/148413258-valterra-flush-king-45-degree-reverse-flush-valve-attachment-rv) ## Best For - valterra enthusiasts ## Why This Product - Trusted valterra brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Safety First:** Anti-siphon valve protects your fresh water supply from backflow. - • **Smart Design:** The 45-degree angle ensures optimal draining without the hassle. - • **Universal Fit:** Designed to fit most RVs, campers, and trailers effortlessly. - • **Flush Away Worries:** Experience a cleaner RV with our powerful sewer tank rinser! - • **See the Difference:** Clear construction lets you monitor your tank's cleanliness in real-time. ## Overview The ValterraFlush King™ 45 Degree Reverse Flush Valve Attachment is a must-have for RV, camper, and trailer owners. This innovative sewer tank rinser breaks up plugged tanks and cleans pipes, ensuring a hassle-free experience. With its universal fit, clear construction for visibility, and leak-proof design, it guarantees optimal performance and safety for your fresh water supply. ## Description Drain your RV with ease with the Valterra Flush King™ Reverse RV Flush Valve! This sewer hose attachment features bayonet fittings to ensure a leak-proof draining experience. The clear construction allows you to see when the water runs clear. With an anti-siphon valve, you can protect your fresh water supply from possible backflow. The water flow from this valve helps break up plugged pipes tanks and cleans the tank, pipe, valve, and drain hose. With the Valterra Flush King™, you can flush and rinse both your tank and hose in one operation, saving you time so you can get back on the road. Review: Eco friendly to clear blockage. - Cleared my blockage very quickly. Easy to connect and operate. No chemicals needed. Review: Good Rv waist flushing valve - 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 ## Features - SEWER TANK RINSER: Breaks up plugged tanks pipes and cleans tank, pipe, valve, drain hose.Fit Type: Universal Fit - FUNCTIONAL: Anti-siphon valve with internal backflow preventer protects the fresh water supply from possible backflow - CLEAR CONSTRUCTION: Clear walls allow you to see when water is running clear - 45 DEGREE ANGLE: Ideal angled shape allows for easy draining - LEAK-PROOF: Tight bayonet attachments with 360-degree swivel and pre-installed fittings ensure a leak-proof connection ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B008O9DV78 | | Best Sellers Rank | 261,771 in Automotive ( See Top 100 in Automotive ) 4,122 in Motorhome Parts & Accessories | | Brand | Valterra | | Customer Reviews | 4.7 out of 5 stars 4,362 Reviews | | Exterior Finish | Smooth | | Exterior finish | Smooth | | Global Trade Identification Number | 00019079243508 | | Included Components | Valterra F02-4350 Flush King Reverse RV Flush Valve | | Inlet Connection Type | Barb | | Inlet connection type | Barb | | Item Dimensions | 27.3 x 12.7 x 18.7 centimetres | | Item Type Name | Valterra F02-4350 Flush King Reverse RV Flush Valve | | Item Weight | 1 Pounds | | Item dimensions L x W x H | 27.3 x 12.7 x 18.7 centimetres | | Manufacturer | Valterra | | Material | Acrylonitrile Butadiene Styrene (ABS) | | Model Number | F02-4350 | | Outlet Connection Type | Barb | | Outlet connection type | Barb | | Part Number | F02-4350 | | Size | (Pack of 1) | | UPC | 019079243508 | | Unit Count | 1.0 count | ## Images ![Valterra Flush King™ 45 Degree Reverse Flush Valve Attachment for RV, Camper, Trailer - Image 1](https://m.media-amazon.com/images/I/51dYcCtrjqL.jpg) ![Valterra Flush King™ 45 Degree Reverse Flush Valve Attachment for RV, Camper, Trailer - Image 2](https://m.media-amazon.com/images/I/81JWVGU4O4L.jpg) ## Questions & Answers **Q: how does it install?** A: P.S. BEFORE you turn the fresh water on, make sure either the black or gray valve on your unit is open after you close the valve on the flush king . If you turn on the fresh water and ALL the valves are closed, the pressure can easily cause the unit to disconnect and break off some of the plastic hooks that hold the flush king in place. **Q: My sewer hose stays connected to the rv. If I buy another sewer hose to connect to black side, can I connect the clear side to the other hose?** A: The clear end - with the four locking 'ears' - is designed to lock onto the four pins on the end of the rigid drain pipe of your RV. If you have a flexible hose attached to the end of the rigid pipe you likely can attach the Reverse RV Flush valve assembly to the end of the hose, but as most hoses have the four ear bayonet mount on only ONE end of the hose, and no connecting fitting on the discharge end of the hose, you'll likely need another four pin hose end like that available in a kit such as the Camco 39543 RV Twist Connect Kit Sewer Fitting from Amazon - http://www.amazon.com/Camco-39543-Twist-Connect-Fitting/dp/B000BQR8TE/ref=sr_1_27?s=automotive&ie=UTF8&qid=1393204739&sr=1-27&keywords=camco - if you wish to install the RV Flush Valve between two flexible hoses. (Not certain why you'd want to go this route... I find it much easier to attach the RV Flush Valve directly to the RV's rigid pipe, then attach flexible hose(s) to it to reach the sewage tank, but I don't leave any of the items attached permanently.) Remember - this is designed to do TWO different tasks. #1 - allows fresh water to flow backwards through the rigid drain pipe, thus allowing water to flow into both the grey and black water tanks, which then are emptied - perhaps more than once. (Many newer RVs have built-in 'sprinkler' type devices inside their holding tanks to allow fresh water to flush the tanks, but for older RVs like mine this Flush Valve does a fantastic job. #2 - fresh water discharged from the holding tanks flush out the valve and drain hose(s). **Q: Is it me or should the hose inlet be facing the black water tank to help flush the tank?** A: All trailers are different angle pipes so it can't be made like that. The design of this is not to spray a water jet up the pipe but to back up fresh water into the tank to flush it out (rather than stand on the peddle of the toilet for 10 minutes). Because of how easy it is to do, I will flush it in the middle of the camping trip if i get bored and keep the smell down that way. Anyway, there are flushers designed to shoot a jet up the black water pipe, but they have very poor reviews because you only get one angle which most likely wont reach the tank because of trailers all being made with different angle pipes. **Q: Would this work with a 2004 170p roadtrek class b camping van rv? i'm a newbie rver. don't quite understand the concept...** A: It appears you have a macerater pump on your unit that pumps the waste out thru a small hose. The f02-4350 is for a different system (gravity) with a three inch hose. It is so you can hook a garden hose to it and add water to the holding tanks to flush out. No it will not work on your system. They do make a sprayer that can be installed to the side of the tank to rinse it out. Hope this helps you. I like the gravity system as there is less to go wrong. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Eco friendly to clear blockage. *by J***O on 11 October 2025* Cleared my blockage very quickly. Easy to connect and operate. No chemicals needed. ### ⭐⭐⭐⭐⭐ Good Rv waist flushing valve *by J***D on 30 June 2025* 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 ### ⭐⭐⭐⭐⭐ Works great and ensures a clean tank. *by R***H on 24 August 2019* 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 ## Frequently Bought Together - Valterra Flush King™ 45 Degree Reverse Flush Valve Attachment for RV, Camper, Trailer - Save A Drop Water Flow Meter | Measure Gallon Usage from an Outdoor Garden Hose | Helps Conserve Water - Calgon Ageless Bath Series Renewing Pearls, 16 oz. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.co.uk/products/148413258-valterra-flush-king-45-degree-reverse-flush-valve-attachment-rv](https://www.desertcart.co.uk/products/148413258-valterra-flush-king-45-degree-reverse-flush-valve-attachment-rv) --- *Product available on Desertcart United Kingdom* *Store origin: GB* *Last updated: 2026-06-02*