A topic that came up for discussion on the sun-setting FB group involved solenoid connection and usage for a Ruida controller. I wanted to bring this over into the new forum and post here my value-play $7 DIGITEN 24V 1/4" Inlet Feed Water Solenoid Valve. This thing has worked flawlessly for me for over a year now. It draws only 200mA (4.8W @ 24v) and can be directly connected to the controller.
I further regulate my air from my shop system 95 PSI at the laser down to about 20 PSI prior to the solenoid.