This product should have a higher rating. For those complaining about having to slip the flange over the flared end of this discharge tube: this flange has a slightly larger hole than the one that comes with the disposal. This is so you can gently force the flange over the lip of the tube. I'm sixty years old with arthritis in both hands, and I didn't have any trouble.
And, yes, there are no instructions, but common sense tells me the grey washer goes inside the tube and the black washer goes over the lip and sits below the flange.
I was expecting this to be a pain in the neck, but it made the job so easy. I didn't have a disposal before, so the discharge tube didn't line up with the existing plumbing. It was about an inch high. I was able to curve this tube, line it up, and tighten it down in just a couple of minutes.
I used this to install an Insinkerator Badger disposal.
I found it easy to slip on the red plate over the lip of the pipe by inserting it through the hole and then used thumb pressure to push it over. Took only a few seconds and no heating used. I then fitted the black washer with the inner groove over the lip. I did not use the grey washer at all, did not see the need for it.
I had a screw type fitting at the drain end on my plumbing and used the existing washer and threaded cap to fit this pipe to the drain line.
Connected the flexible drain pipe assembly to the new disposal unit before installation, Everything worked fine, no leaks.
This product works once you figure out how to install it. The product itself has very little information. You must go online or to YouTube to see it better.
One thing I would add is that when using this tube and a disposal unit that has a flange, DO NOT USE THE BLACK RUBBER GASKET PROVIDED WITH THE DISPOSAL UNIT. THE RUBBER SEAL PROVIDED WITH ( AND THEN INSTALLED OVER ) THE FLEXIBLE TUBING ACTS AS THE SEAL.
You install the tube with the rubber seal into the discharge hole and then tighten with the flange. This may seem obvious to some but it was not to me. The disposal installation instructions and the tube instructions are independent of each other. So, if you had a previously installed disposal unit or are installing one for the first time you probably will have installed the gasket first before installing the tube. This leads to using two seals, one inside the disposal unit and one on the tube. This resulted in a huge water leak once installed and run.
Only after thinking it over did I figure out the problem. This should be included in the instructions and not left for one to discover the hard way.
In summary, the part works but the installation instructions ( or lack thereof ) need to be revised.
Pros: works ok
Cons: not easy to install without proper instructions
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Response from INSINKERATORJuly 27, 2020
Hi Bobus, I’m sorry for the inconvenience this has caused and truly understand your frustration with our product. Your feedback is important to us and will be shared with our product marketing team. From time to time, we review and update our product manuals to ensure our instructions are clear and easy to follow. Again, we appreciate your taking time to reach out and thank you for being an InSinkErator customer.
Took too much time to install. The written instruction on the website is extremely confusing. Should have image showing how the parts should be assembled on the Package. Instead of letting the customer go and find the install instruction. Why not provide instruction on how to assemble via a simple image diagram on the package? Need new packaging with assembly image instruction to improve selling of your product?
Cons: must change packaging, show assembly picture on packaging
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Response from INSINKERATORJune 16, 2020
Hi, I'm sorry to hear of the experience you had with our product. Your feedback is important to us and will be shared with our product marketing team. From time to time, we review and update our product manuals to ensure our instructions are clear and easy to follow. Again, we appreciate your taking time to share feedback as all comments help us to continuously improve.
I've replaced disposers at two houses recently, and both of them had old InSinkErator units with the drain line offset 6" from the disposer centerline. The new units have a 5" offset using the drain tube provided with the disposer. This flexible tube can be used to match the old 6" offset without the need to modify the existing drain piping under the sink. This worked great at both houses and makes the replacement job much easier.