CMI Inc - 3/4 Inch Tankless Water Heater Isolation Service Valve with Pressure Relief Valve – Female to Female Connection – Flush Kit for Gas & Electric Models, PEX Core

This is exactly as described, it arrived as promised, appears to be well made, and a good value for the money I just wish they would put a packing slip in the package. This came in the manufacturers packaging 👍 Limited or no single use plastic 👍 No polystyrene foam packing (styrofoam) 👍👍

Good quality solid brass construction. I had my on-demand water heater installed over 14 years ago and the plumber did not have these bypass valves on it. I only just became aware of the need for yearly flushing on these water heaters recently. Watched some YouTube videos and saw similar bypass valves so I ordered these on Amazon. With a little copper plumbing skills including soldering, I had these valves installed in about an hour. Then ran my vinegar solution thru the water heater for about 2 hours. I was amazed at how much build up was washed out of the heater. My pressure seems better and my water heats up quicker than it has in years.

Installed a tankless water heater and these worked perfectly. A must have when installing a tankless water heater and the price was the best I found. And as opposed to another reviewer that said it doesn't come with the free water pressure gauge.. mine did.. came with everything as in the posting. It was included separate from the box with the valves so maybe his just didn't get thrown in by mistake.

Did a good job and helped me with cleaning out the water heater during maintenance.

This kit is a must have for tankless water heaters. Hook up is simple and easy. Cost is reasonable. When you flush your tankless water heater every year, this kit will make it super easy. And will add many extra years of life to your tankless water heater. (Almost like when you clean your coffee pot.)