This gas meter is connected to a pipe to measure unidirectional gas flow Made of high quality acrylic, it is transparent and can withstand a pressure of 0.6 MPa It is simple to use and features 8mm barbs for convenient connection to pipes Can measure blast furnace gas, coke oven gas, coal gas, air, nitrogen, acetylene, phosgene , hydrogen, natural gas, liquefied petroleum gas, hydrogen peroxide, flue gas, methane, butane, chlorine gas, methane, carbon dioxide, oxygen, compressed air, argon Mainly used to detect flow oxygen, control the oxygen flow and can be used in industry Specifications: Material: acrylic + plastic + metal Connection: 8mm barbed fitting Accuracy: 5% Range: 2.5 ~ 25LPM Pressure: 0.6MPa (recommended 101.3KPa) Temperature: 0 ~ 60C (recommended 20) Package includes: 1 x Gas Flow Meter Note: This does not include other things , the color is based on the first picture and other pictures only show the effect Due to differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!