---
product_id: 266416606
title: "Valterra Flush King™ 45 Degree Reverse Flush Valve Attachment for RV, Camper, Trailer"
brand: "valterra"
price: "€ 82.83"
currency: EUR
in_stock: true
reviews_count: 5
category: "Valterra"
url: https://www.desertcart.nl/products/266416606-valterra-flush-king-45-degree-reverse-flush-valve-attachment-rv
store_origin: NL
region: Netherlands
---

# 360° leak-proof swivel 45° reverse flush angle clear walls for visual rinse check Valterra Flush King™ 45 Degree Reverse Flush Valve Attachment for RV, Camper, Trailer

**Brand:** valterra
**Price:** € 82.83
**Availability:** ✅ In Stock

## Summary

> 🚐 Flush like a pro, hit the road faster!

## 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?** € 82.83 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/266416606-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

- • **Fresh Water Safety:** Built-in anti-siphon valve prevents backflow contamination
- • **Visual Confirmation:** Clear construction lets you see when water runs crystal clear—no guesswork
- • **Optimized Angle Design:** 45° reverse flush angle for easy draining and faster rinsing
- • **Effortless Tank Cleaning:** Breaks up clogs and flushes tanks in one smooth operation
- • **Universal Fit & Leak-Proof:** Bayonet fittings with 360° swivel ensure a secure, drip-free connection

## Overview

The Valterra Flush King™ 45 Degree Reverse Flush Valve Attachment is a universal-fit RV sewer tank rinser designed to break up clogs and clean tanks efficiently. Featuring a leak-proof 360° swivel bayonet connection, clear walls for visual rinse confirmation, and an anti-siphon valve to protect fresh water, its 45° angled design ensures easy draining and faster maintenance—perfect for the savvy RV owner who values time and hygiene on the go.

## 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: 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!
Review: Cleared my blockage very quickly. Easy to connect and operate. No chemicals needed.

## 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 | #59,009 in Automotive ( See Top 100 in Automotive ) #41 in RV Sewer Hose Carriers & Fittings |
| Brand | Valterra |
| Customer Reviews | 4.7 4.7 out of 5 stars (4,297) |
| Date First Available | 21 September 2023 |
| Exterior | Smooth |
| Item Weight | 454 g |
| Item model number | F02-4350 |
| Manufacturer | Valterra |
| Manufacturer Part Number | F02-4350 |
| Model | F02-4350 |
| Product Dimensions | 27.31 x 12.7 x 18.72 cm; 453.59 g |

## 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)

## 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

### ⭐⭐⭐⭐⭐ Review
*by O***R on 15 August 2024*

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!

### ⭐⭐⭐⭐⭐ Review
*by J***O on 11 October 2025*

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

### ⭐⭐⭐⭐⭐ Review
*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.

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*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-22*