Pneumatic tidbits

* SMC part number decoding. I wish I had had this last year before i applied AC to a DC solenoid. The “-5” that I referred to has nothing to do with the negative 15 VDC terminal on your power supply. I was referring to the “dash five” in your SMC part number, VF3130-5xZ where, 1 – 100 VAC, 2 – 200 VAC, 3 – 110 to 120 VAC, 4 – 220 VAC, 5 – 24 VDC, 6 – 12 VDC, 7 – 240 VAC, 9 – Other
* Buy pneumatic couplings online at Homier
* OK not that pneumatic but here is a circuit design for driving something with sound — some people suggest hooking this to “a solid-state relay (110 VAC) or a Darlington sink driver (12 or 24 VDC) in order to switch your solenoid valve”.