CO2 Regulator with 8mm Male for Paintball PCP Airsoft CO2 Tank Cylinder Regulator & Adapter DIY Kit Adjustable Range 0~200psi, 0~800psi Optional

we can only ajust the pressure start with 0 psi up to how much you want it(the max. ajustable pressure is 200psi),the pressure will refresh when you shot once .(we can not ajust the pressure from high to low) Important-In order to prevent the gauge from exploding during installation,please follow the instructions. 1,Turn the knob clockwise until the adjusting lever is completely relaxed, so that the regulator is closed. 2,Then screw the regulator to the HPA bottle. 3,After installation, you can tighten the knob in clockwise direction, so that you can adjust the pressure you need.But please keep the pressure below 300psi, otherwise the pressure gauge will break. Turning the knob clockwise is tighten and increase psi; Turning the knob counterclockwise is loose,but will not decrease pressure, just let pressure return zero Please pay attention: The top quick disconnect size is 8mm. it can only be a single time, can't continuous for this regulator. It must wait the pressure drop to 0 psi. Input Pressure: 800-1000 psi.