The butterfly valve is shut down (disc or disc) disc around the valve axis to achieve the opening and closing a valve in the pipe from the main cut and throttle use. 
 Pao-teh valves - butterfly valve series products: wafer type butterfly valve D71, butt welding butterfly valve D61, flange butterfly valve D41/D43. Pneumatic butterfly valve D671/D673/D641/D643 vacuum butterfly valve the GI, pneumatic vacuum butterfly valve GIQ, pneumatic flange butterfly valve D643, D641, pneumatic clip butterfly valve D671, D673, pneumatic soft sealing butterfly valve D671, D672, D641 , Pneumatic Hard Seal Butterfly Valve D673H, D643H, D663H, electric butterfly valve D971, electric vacuum butterfly GID-50-1200 electric wafer butterfly valve D973, D971, electric flange butterfly valve D941, D943, electric soft sealing butterfly valve D971X , D972X, D941X, electric hard sealing butterfly valve D943H, D973H, D963H. Manual butterfly valves D71, D73, D41, D43, D63, worm gear butterfly valve D373, D343, D371, D341, D363. Eccentric hard sealing butterfly valve, multi-level hard sealing butterfly valve, elastic hard seal butterfly valves soft seal butterfly valve manually, single eccentric soft seal butterfly valves FBEX, WBGX, WBEX WBLX, FBPX WBPX. Telescopic butterfly valve SD343H, SD341X. Lug butterfly valve LTD371X. Signal butterfly WBSX (XD371X). D371J/D341J rubber lined butterfly valves. The fluorine butterfly valve D341F/D371J, half lining butterfly valve D371FH. Insulation butterfly valve BD343H. High temperature butterfly valves, high pressure butterfly valve, two-way pressure hard sealed D373, D343H-100C / P. The ventilation Butterfly Valves D341W/D941W-6, electric ventilated multi-leaf butterfly valve DBD-0.5. Electric adjust butterfly valve ZAJW-0.6. The plastics butterfly valve D71X/371X-6S. Manual vacuum butterfly valve of the GI. The butterfly valve of stainless steel, aluminum alloy butterfly valves, cast steel butterfly valves, cast iron butterfly valves, center line butterfly valve. Pin butterfly valve, sanitary butterfly valve products 
 Imports butterfly valve butterfly chart butterfly details of standard butterfly valve butterfly valve model butterfly valve for / application of butterfly valves size butterfly valve price list butterfly specifications butterfly valve working principle butterfly valve installation schematic butterfly valve internal structure 
 Body material: cast iron, cast steel, stainless steel, chrome molybdenum steel, aluminum, brass, sealing surface material: H, J, F46, Y,, W. Working pressure 0.6-10MPA The working temperature of -40 ° C to 550 ° C. Valve size DN 15-of DN1000. Connection: flange, welded on the folder. Transmission: Manual, worm gear, pneumatic, electric. Applicable medium: water, oil, gas, steam, mud, water, acids. Manufacturing Standard: (configured flange standard) GB, American Standard, Japanese Standard. 
 Butterfly valve, opening and closing parts of a disc-shaped disc in the valve body around its own axis of rotation, so as to achieve the purpose of opening and closing or regulation. Butterfly valve fully open to fully closed is usually less than 90 °, butterfly valves and butterfly rod itself is not self-locking capability for positioning of the disc, install worm gear on the stem. Worm gear reducer, not only can make the disc capable of self-locking, stop in any position, but also to improve the operational performance of the valve disc. Characteristics of industrial butterfly valves to high temperature, the applicable pressure range is also high, the valve nominal diameter, the body uses carbon steel, the valve plate seal with a metal ring instead of the rubber ring. Large-scale high-temperature butterfly valve with welded steel plate manufacturing, mainly for medium heat, smoke duct and gas pipelines. 
 The butterfly valve has the following advantages: 1, open and close easily and quickly, saving, small fluid resistance, and can often operating. Simple structure, small size and light weight. 3 to transport the mud to a minimum accumulation of liquid in the pipe outlet. 4, low voltage, you can achieve a good seal. 5, good regulating performance. 
 The disadvantage of the butterfly valve is as follows: 1, the use of pressure and temperature range. 2, poor sealing. 
 Butterfly valve structure can be divided into the offset plate, vertical plate, swash plate and leveraged. According to the sealing form can be divided into the relatively closed-type and two hard seal. Soft seal commonly used rubber ring seal and hard seal type commonly used metal ring seal. Connection type can be divided into a flange connection and the transmission mode can be divided into manual gear, pneumatic, hydraulic and electrical several clip-on connection; 
 Installation and maintenance of the butterfly valve should note the following: 1, in the installation, the valve flap to stop in the closed position. 2, the open position shall be the disc rotation angle. With bypass valve, butterfly valve, open the bypass valve opening should be preceded. 4, the weight of a large butterfly valve, should be set a solid foundation. 
 Proudly butterfly valve series products have been widely used in a variety of chemicals, liquefied petroleum gas, to drainage, food, pharmaceutical, boiler and steam system, mining, paper, power generation, urban construction, municipal, and other fields, as well as the daily lives of residents. Pao-teh, products sold throughout the country, high quality, efficient service, won the trust of users and the widespread praise.