ZRDR Standard CO2 Regulator Solenoid Valve (Double Head)  Part # W00-05B
 
Features 
US Power Plug
Input - AC100-240V AC 50/60Hz
Output Voltage - 12VDC 200mA
Top (output) fitting 4*6MM
Bottom (intake) fitting 4*6MM
 
Note - If you are in need of the Single Head Solenoid Value  Order the following.
Single head version ( size heads)  Part # W00-05A