Mikey
Aspiring Old Fart, EE, computer & networking geek
Basically, yes. I have Fleck valves on my tanks, all with bypasses. To rebed a filter or work on the valve, I turn off the main water valve and relieve system water pressure, then put the valve in bypass. At this point there's no pressure in the tank, so I can separate the valve from the bypass module and do whatever I need to do with it. Normally, I don't want any water to be used at all with a tank out of the system (for example, with the GAC tank out, there's a nasty chlorine taste and smell, and it doesn't do the softener media any good), but I can get along without softened water if need be, so if I'm working on the softener, I can turn system water back on while I'm working on the valve. I have a spare tank, so if I'm just rebedding one, I can have the old tank out and the rebedded tank in in about 10 minutes.