With solenoid with adjustable working pressure. 

360° rotatable high precision needle valve.

• Include bubble counter with built in check valve
• Working pressure: 0 - 0.5Mpa (5Bar)
• For CO2 cylinder W21.8-1/14 or 5/8-18UNF
• AV100-24V / 50-60Hz (UK plug)
• Low power DC12V/3W USB connection solenoid valve