I used to sell SMC Pneumatics. I can attest to Claudius statement. SMC and Festo are quality products.
I've been doing some research, and have come across the Alfa Laval valves, but am hesitant to ask how much: "...If you have to ask, you probably can't afford"
http://www.alfalaval.us/products/fluid-handling/valves/Double-seat-valves/unique-cp-3/?id=170380
Anyone have any experience with these? True sanitary 3-way valves, but I'm sure interface with BCS/Arduino will be problematic.
I'm hoping Johnson can come up with something, but "if" they do, will likely take some time. For my build plans, I may just stick with manual 3-piece valves and silicon hoses until I can wrap my head around where and what I want automated valves for.
Anyone have recommendations for building out the BCS control panel with room for future expansion?
Not trying to pat myself on the back here... but I fixed this problem with a proportional valve. Using an arduino, flowmeter, and proportional valve, the sparge rate is automatically maintained, independent of pressure/temperature conditions. If has very fine control and a V-groove cut into the ball for more linear response to input signals.
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