The SMC VX222HGKXB solenoid valve comes with a 7W coil energized by 24VDC through its 80Ω winding.
This normally closed valve has one inlet (shown above) and one outlet which are both ¼" ports, and the orifice is of diameter 4mm.
The 24VDC is supplied through the DIN electrical interface across pins 1 and 2. Polarity is unimportant to the coil. Pin 3 is unused and missing. GND pin is supplied but may not be relevant to 24VDC.
Without power supplied, the valve is down and normally closed.
With 24VDC applied, the valve has moved up and is opened.