Pneumatic flange butterfly valve: pneumatic flange butterfly valve is composed of rubber sealed butterfly valve, carbon steel or stainless steel valve plate and valve stem. It is applicable to the water supply and drainage of food, chemical industry, petroleum, electric power, textile, papermaking, etc. the temperature is ≤ 80 ~ 120 ℃, regulating the gas pipe flow and intercepting medium.

气动调节蝶阀：是一种（阀板）垂直于通道的固定轴旋转阀，由活塞双作用或单作用（弹簧复位）气动执行器和蝶阀组成，属于旋转高性能调节或切断阀、电、气阀定位器或电磁阀、空气过滤减压器、限位开关（阀回信器），可实现流体介质比例调节和二切断控制，实现流体介质流量、压力、温度、液位等参数的自动控制。

Pneumatic regulating butterfly valve: it is a fixed shaft rotary valve (valve plate) perpendicular to the channel, which is composed of piston double acting or single acting (spring return) pneumatic actuator and butterfly valve. It belongs to rotary high-performance regulating or shut-off valve, electric and pneumatic valve positioner or solenoid valve, air filter pressure reducer and limit switch (valve feedback). It can realize the proportional regulation and secondary cut-off control of fluid medium, and realize the flow, pressure, temperature Automatic control of liquid level and other parameters.

气动夹式蝶阀：结构新颖，阀体结构为短距离夹式结构，满足管道空间狭窄，外部零泄漏，内部泄漏符合标准。

Pneumatic clip butterfly valve: the structure is novel. The valve body structure is a short-distance clip structure, which meets the requirements of narrow pipe space, zero external leakage and internal leakage in line with national standards.

气动衬胶蝶阀：根据介质的化学性质，根据介质的化学性质，连接法兰、乙丙橡胶、耐热乙丙橡胶、氯丁橡胶和氟橡胶。

Pneumatic rubber lined butterfly valve: according to the chemical properties of the medium and the chemical properties of the medium, connect the flange, ethylene propylene rubber, heat-resistant ethylene propylene rubber, neoprene and fluororubber.

气动衬里氟蝶阀：防腐衬里氟蝶阀分为两个阀体组合，阀座和阀体衬里集成，阀门工作，只有塑料阀座和衬里塑料蝶板和介质接触，产品可承受熔融碱金属和元素氟以外的任何介质腐蚀，包括D71F46阀杆和蝶板（锻造），表面均匀覆盖一层FEP。阀体通道内表面光滑，流体阻力小，CV值高，循环能力强，扭矩适中，采用四级密封结构，采用耐温耐老化的SI橡胶弹性衬垫阀座，完全实现介质零泄漏。

Pneumatic lining fluorine butterfly valve: the anti-corrosion lining fluorine butterfly valve is divided into two valve body combinations. The valve seat and valve body lining are integrated. The valve works. Only the plastic valve seat and lining plastic butterfly plate are in contact with the medium. The product can withstand the corrosion of any medium other than molten alkali metal and elemental fluorine, including d71f46 valve stem and butterfly plate (forging), and the surface is evenly covered with a layer of FEP. The inner surface of the valve body channel is smooth, the fluid resistance is small, the CV value is high, the circulation capacity is strong, and the torque is moderate. The four-stage sealing structure is adopted, and the temperature and aging resistant Si rubber elastic gasket valve seat is adopted to completely realize zero medium leakage.

气动通风蝶阀：阀板阀座间有一条细缝，适用于空气流通较差的环境。

Pneumatic ventilation butterfly valve: there is a fine seam between the valve plate and valve seat, which is suitable for the environment with poor air circulation.

气动伸缩蝶阀：设计新颖，结构合理，结构独特，重量轻，操作方便，启闭快；伸缩蝶阀不仅可以调节和截流，补偿管道温差引起的热膨胀和冷收缩功能，还可以方便安装和更换和维护阀门。密封件可调更换，密封性能可靠。

Pneumatic telescopic butterfly valve: novel design, reasonable structure, unique structure, light weight, convenient operation and fast opening and closing; The telescopic butterfly valve can not only adjust and shut off the flow and compensate the thermal expansion and cold contraction caused by the pipeline temperature difference, but also facilitate the installation, replacement and maintenance of the valve. The seal can be adjusted and replaced, and the sealing performance is reliable.

气动硬密封蝶阀：结构简单，体积小，重量轻，成本低。气动盘阀的特点特别明显。安装在高空黑暗道路上。经过两个五通电磁阀控制，操作方便，流量介质也可调节。流体阻力小，中大口径气动盘阀全开时循环面积大，启闭快捷省力，盘扳机旋转90角度即可完成启闭。由于转轴两侧盘板手介质的作用力接近相等，转矩方向相反，启闭扭矩小，低压下密封良好。盘阀密封材料包括丁青橡胶、氟橡胶、食用橡胶和衬四氟化物，因此密封性能良好。硬密封盘阀是软硬层叠金属片，具有金属硬密封和弹性密封的优点，在低温下密封性能优异。

Pneumatic hard seal butterfly valve: simple structure, small volume, light weight and low cost. The characteristics of pneumatic disc valve are particularly obvious. Installed on high-altitude dark roads. Controlled by two five way solenoid valves, the operation is convenient, and the flow medium can also be adjusted. Small fluid resistance, large circulation area when the medium and large diameter pneumatic disc valve is fully opened, fast and labor-saving opening and closing, and the opening and closing can be completed by turning the trigger 90 degrees. As the force of the medium on both sides of the rotating shaft is nearly equal, the torque direction is opposite, the opening and closing torque is small, and the sealing is good under low pressure. Disc valve sealing materials include butadiene rubber, fluororubber, edible rubber and lining tetrafluoride, so the sealing performance is good. Hard seal disc valve is a soft and hard laminated metal sheet, which has the advantages of metal hard seal and elastic seal. It has excellent sealing performance at low temperature.

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