Introduction to use:OOTDTY1. Make sure the cylinder is stationary and tightly closed.2. Please do not add any lubricant.3. Please do not disassemble the device.4. With the control counter bubble counter, the reading is accurate, the built-in reverse flow can prevent the reverse flow phenomenon when the cylinder pressure drops. Adjustment method: Close the CO2 indicator, install the reducing valve, connect the equipment. Open the relief valve and adjust the gas output. Less than required. Adjusting the pressure reducing valve 8 hours later. Warm Tips: Please note that this m22-14 does not fit US and Canada cylinder. The thread is made according to British, European, Japanese and Taiwan standard (JIS m22-14) with a diameter of 22mm. Specifications: Material: Aluminum Alloy Color: Silver Thread Diameter: 22mm/0.87" Input Pressure: 0-10mpa Intake Link: GB G5/8 Cylinder Interface Degassing Cell: M10x1 Outer Fiber Output Pressure: Fine-tune the second bubble calculations Quantity: 1 setNote: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering. Please understand that colors may contain chromatic aberration as different placement of photos. Package Included:1 x CO21 Pressure Gauge x Ring Washer