I’m not sure what you’re asking about specifically, so I’ll guess from the picture you referenced.
The blast gates and the actuators were purchased from amazon.
[Blast Gate](POWERTEC 70227 6-Inch Aluminum Blast Gate for Dust Collector/Vacuum Fittings https://www.amazon.com/dp/B071RSDH23/ref=cm_sw_r_cp_api_i_GQ.zEbWKWHTYA)
[Air Cylinder](Sydien 16mm Bore 150mm Stroke Air Cylinder Double Action with Y Connector and 2Pcs Pneumatic Quick Fitting (MAL16x150) https://www.amazon.com/dp/B07DYNXDV8/ref=cm_sw_r_cp_api_i_nU.zEbWH5GPM1)
I made the blast gates pneumatically actuated on my own by creating my own brackets.
The air lines to the actuator are controlled with an electric 2 position 5 way solenoid valve Solenoid Valve along with the addition of a muffler / speed control.
[Two Way Valve](Baomain Electric Solenoid Valve 4V210-08 AC110V 2 Position 5 Way Inlet 1/4" https://www.amazon.com/dp/B01D9GXJSQ/ref=cm_sw_r_cp_api_i_kZ.zEbBS8NEN4)
[Speed Control](10pcs 1/8 Pneumatic Muffler Silencer Filter Air Flow Speed Controller Sintered Bronze NPT https://www.amazon.com/dp/B07D47VNKP/ref=cm_sw_r_cp_api_i_TV.zEbA5C1XWP)
