Thank you for contacting us through our website. You wrote:
“What is the brand name of the valves used in your whole house sediment backwash filters”
We use two different control valves, depending on the size of system. So for the smaller residential models (0.75 cubic foot up to 1.5 cubic foot) we use the 5900e valve, and for the larger models, 2.0 cubic foot and up, we use the Fleck 7000-SXT.
The 5900e control head is manufactured by Chandler, a company based in Ohio. Chandler has been making valves for the Isobar and Watersoft brands since the 1980s and has partnered with Fleck numerous times to create particular valve brands. As a result, there is a lot of design overlap between the Chandler 5900e valve and Fleck valves. The 5900e valve and the Fleck 5000 valve share the same valve body design, and as a result, the small serviceable parts are interchangeable. You can get parts for it from us, or from any company selling Fleck parts.
Functionally, we like the 5900e valve quite a bit. It’s user-friendly, with easy to follow programming, and the parts are all readily-accessible for servicing and maintenance. The Fleck 7000-SXT is a higher-flow valve so we can use it for the bigger sizes.
In case you want to be enlightened on how the entire process works, check out this diagram:
I hope this helps, please email back or call with any questions or if you would like a specific size recommendation.