I am aware of the pneumatic options for blast gates, but I will have say, so far, I have been happy with the Ecogate System. ?I purchased the product years ago and it served me well. ?It was at the time a green box for up to 8 machines. ?The setup was very simple. ?I installed the duct work and blast gates. ?Then, I connected the vibration sensor to the motors, and ran the wire along the duct between the machine and the blast gate for each machine. ?Then, I ran the wires from the blast gates to the inputs on the Green box that was placed near the dust collector for each machine. ?Then, the green box was wired to the dust collector (works with single phase or 3 phase with their power relay). ?Thats it. ?When I turn on a machine, the vibration sensor triggers the blast gate to open to that machine and all other gates to close and the dust collector to turn on. ?Then I turn the machine off, after a short delay to allow time for the duct to clear, the dust collector turns off. ?No air so no air leak concern.
Now that I am about to exceed 8 machines, I took Ecogate up on their offer of a trade in on my "legacy" green box for their new Green Box 12 that I guess has more features (that I probably do not need or want to take the time to figure out) and more importantly, more than 8 ?inputs. ?Also the vibration sensors have been replaced with sensors that detect voltage rather than vibration and are more reliable.?