[Butterfly] of the worm gear clamp is used as a cutting-edge technology to ensure the market, Clyde Valve Co., Ltd. [Shanghai] believe in the power of quality brands will be able to open the door, [butterfly] of the clip-worm in Shanghai butterfly valve series of Clyde, reliable quality, welcome inquiry purchase! 
 Butterfly Description: [butterfly valve opening and closing piece is a disc-shaped disc, the valve body around its own axis of rotation, or adjustments to achieve the opening and closing the valve called the butterfly. Valve fully open to fully closed is usually less than 90 degrees, and the butterfly valve lever does not have a strong self-locking, in order to position disc to install on worm gear on the stem. Using worm reducer, not only can make disc with self-locking capability, so that disc to stop at any position, but also to improve the operational performance of the valve. Industry-specific features to high temperature valve for high pressure range, the valve nominal diameter large, carbon steel valve body, valve plate metal ring seals instead of rubber ring. Large-scale manufacture of welded steel plate heat valve, mainly for high-temperature medium smoke duct and gas pipelines. ] 
 Butterfly effect: butterfly valve is open and close with a round disc with the stem pieces and turn to open, close and adjust a valve fluid channel. 
 Medium: air, water, sewage, steam, gas, oil, corrosive media, etc. 
 Valve applications: chemical, petrochemical, petroleum, paper, mining, electricity, gas, food, pharmaceutical, water supply and drainage, municipal, mechanical equipment support, electronic industry, urban construction and other fields. 
 The main performance parameters: 
 [1] Connection: Wafer, lug type wafer, flanged, welded (butt) and so 
 [2] Transmission: Manual, Worm gear, pneumatic, electric, etc. 
 [3] caliber from DN6-DN1200; pressure from 1.0MPA-32MPA; temperature of -100 ℃ -600 ℃ 
 [4] material: carbon steel, stainless steel, alloy steel, chrome molybdenum steel, cold steel, ductile iron, and other special steel; 

 Butterfly advantages: 
 [1] open and close easily and quickly, saving, fluid resistance small, can often operate. 
 [2] a simple structure, small size and light weight. 
 [3] to transport slurry, accumulation of fluid in the pipe outlet at least. 
 [4] under low pressure, can achieve a good seal. 
 [5] adjusted performance. 
 Valve defects are as follows: 
 [1] using the small range of pressure and temperature. 
 [2] poor sealing. 
 Category: 
 [1] butterfly structure can be divided according to the bias plate, vertical plate, inclined plate, and leveraged. 
 [2] can be classified according to the form enclosed and seal than the seal-type two kinds. Soft sealing type commonly used rubber ring seal, seal type commonly used metal ring seal. 
 [3] can be divided according to type of connection flange and the clip-on connection; press can be divided into manual transmission, gear, pneumatic, hydraulic and electric types. 
 Butterfly valve installation and maintenance should note the following: 
 [1] in the installation, the valve to stop in the closed position. 
 [2] the open position the disc rotation should be determined. 
 [3] with a bypass valve butterfly valve, open the bypass valve opening should be preceded. 
 [4] shall be the manufacturer's installation instructions for installation, the weight of a large butterfly, set a solid foundation. 
 [Butterfly] of the clip-worm technology to produce professional Clyde Valve Co., Ltd. [Shanghai] professional attitude [butterfly] import professional brand agent, find the folder-type worm [butterfly] of our services to you