The disadvantage of the rubber-sealed butterfly valve is that when it is used for throttling, cavitation may occur due to improper use, causing the rubber seat to peel and damage. To this end, the international development of metal seal butterfly valve, cavitation area decreases in recent years, China has also developed a metal seal butterfly valve in Japan in recent years also developed cavitation-resistant, low vibration, low noise comb-shaped butterfly valve. General seal seat life under normal circumstances, rubber 15 years - 20 years, 80 years of metal - 90 years. But how to choose correctly according to working conditions. The relationship between the opening of the butterfly valve and the flow rate changes substantially linearly. If it is used to control the flow, its flow characteristics are closely related to the flow resistance of the pipe. For example, the diameters and forms of the valves installed in the two pipes are all the same, while the pipe loss coefficient is different, and the flow difference of the valve will also be very large. If the valve is in a state of large throttling, the back of the valve plate is prone to cavitation, the possibility of damage to the valve, are generally used at 15 °. When the butterfly valve is at the opening degree, the shape of the opening formed by the valve body and the front end of the butterfly valve takes the valve shaft as the center and the two sides form different states. The front end of the butterfly plate on one side moves in the direction of flowing water while the other side flows in the direction of flowing water Therefore, one side of the valve body and the valve plate is formed like a nozzle-shaped opening, the other side is similar to the throttle-shaped opening, the nozzle side than the throttling side of the flow rate is much faster, and throttling side of the valve will produce negative pressure, often There will be a rubber seal off. Butterfly valve operating torque, due to the opening and the valve opening and closing direction of different values, horizontal butterfly valve, especially large-diameter valve, due to the depth of the valve shaft, the difference between the head and the resulting torque can not be ignored. In addition, the valve inlet side of the device elbow, the formation of bias current, the torque will increase. Valve in the middle of the opening, due to the role of water flow torque, the operating mechanism needs self-locking. More Keywords Search: Butterfly valve
CO2 Metal Nonmetal Laser Cutting Machine is a mixed laser cutter engraver, it can cut both metal and nonmetal, it can also engrave on almost all nonmetal. For metal, it can cut only stainless steel and carbon steel. The nonmetal it can cut and engrave include almost all material include wood, MDF, Acrylic, plastic, paper, leather, rubber, fabric, etc. It can also engrave on marble, stone and glass.
Compared with Fiber Laser Cutting Machine, co2 mixed laser cutting machine with the advantage of low machine cost wide usage, as it can cut engrave nonmetal and metal. What's more, a mixed laser cutting machine can add rotary device to cut both metal sheet and metal tube. If customer do not have strict metal cut effect but also want work on nonmetal, our mixed co2 laser cutting machine is a idea choice.
Co2 mixed laser cutter with 150W tube cut 2mm stainless steel
CO2 mixed laser cutting machine with 150W tube cut 13mm plywood
CO2 mixed laser cutting machine with 150W tube engrave on plywood
The optional laser power for co2 metal laser cutting machine we have 150W 180W 260W 300W 350W.
We still have more, and we support OEM.
Applicable Materials
Stainless steel, carbon steel, galvanized steel, acrylic, plywood, MDF and other materials
Application Industries
Advertising industry (stainless steel and acrylic), sheet metal industry (carbon steel), packaging industry (plywood), arts and crafts, awards and trophies, paper-cutting, architectural models, lights and lamps, electronic appliances, photo frame and album, garment leather and other industries
Metal Nonmetal Laser Cutting Machine
Metal Laser Cutting Machine,Mix Laser Cutting Machine,Metal Laser Cutter,2mm stainless steel co2 laser cutting machine
Jinan Transon Cnc Equipment Co., Ltd. , https://www.csjiguang.com