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Discussion in 'Irrigation' started by txirrigation, Oct 10, 2011.
I like air gaps, but I seem to recall you're not a fan of on-demand pumping systems?
Of course you can use float valves, one for each tank. Not a float SWITCH, a float VALVE. I have a customer with 4 water features all fed from the same well and all of them have float valves installed to keep them full. Works perfectly. You're making this way harder than it needs to be.
If you don't have a float switch/valve, then you would have a pressure transducer/sensor ~ a means of electrically 'knowing' when the irrigation storage is filled
a pressure-sustaining valve upstream of the tank might cover your needs - with an air break, you don't need any other isolation for the sprinkler system
Why do you need one? What is wrong with using an actuated ball valve?
How reliable are the float valves? I know what they are, but I woud rather something fail closed than open. A solenoid would fail closed and a float valve would fail open much like a leaking toilet.
I've had them in service outdoors for years and haven't had any problems with them. Everything needs maintenance periodically though, check it every once in a while, re-adjust as needed and you should be fine.
Maybe put float valves in both tanks, then put a pressure switch on the line feeding the float valves? That way, if they are both closed, pump shuts down. If one opens, pump starts up.
R-Co makes them. Longhorn, Sheeping, or any other major supplier should carry them.
The ones I use work on Irritrol valves.
These are typically the type of float valves I see inside of storage tanks: