| Supply stainless steel flange butterfly valve 343W |
| DN40-1200 |
| 600 / |
| 500 |
Place of delivery:
| Shanghai |
| 2014-03-28 |
| 255 days |
| The function and principle of Shanghai Zhuoran Valve—Butterfly Valve: |
The butterfly valve opening and closing member is a disc-shaped butterfly plate that rotates around its own axis in the valve body, so that the valve that is opened or closed is called a butterfly valve. Butterfly valve fully open to fully closed is usually less than 90 ℃, the butterfly valve and the butterfly rod itself is not self-locking force, in order to position the butterfly plate, a worm gear reducer should be installed on the valve rod. The use of a worm gear reducer can not only make the butterfly plate self-locking, stop the butterfly plate at any position, but also improve the operating performance of the valve.
Industrial special butterfly valve features high temperature resistance, high applicable pressure range, large nominal diameter of valve, valve body made of carbon steel, valve ring using metal ring instead of rubber ring. Large high temperature butterfly valves are manufactured by welding steel plates, which are mainly used in flue ducts and gas pipes for high temperature media.
The advantages of butterfly valves are as follows:
1. Convenient and quick opening and closing, labor-saving, low fluid resistance, can be operated frequently
2. Simple structure, small size and light weight.
3. Mud can be transported with minimal liquid accumulation at the mouth of the pipeline.
4. Good sealing can be achieved under low pressure.
5. Good adjustment performance.
The disadvantages of butterfly valves are as follows:
1. The operating pressure and operating temperature range is small.
2. Poor sealing.
Butterfly valve can be divided into offset plate type, vertical plate type, inclined plate type and lever type according to the structure. According to the sealing form, it can be divided into two types: relatively sealed type and hard sealed type. The soft seal type generally uses a rubber ring seal, and the hard seal type usually uses a metal ring seal.
According to the connection type, it can be divided into flange connection and wafer connection; according to the transmission mode, it can be divided into manual, gear transmission, pneumatic, hydraulic and electric.
Attention should be paid to the installation and maintenance of butterfly valves:
1. The valve disc must be stopped in the closed position during installation.
2. The opening position should be determined according to the rotation angle of the butterfly plate.
3. Butterfly valves with bypass valves should be opened before opening.
4. It should be installed according to the manufacturer's installation instructions. Heavy-weight butterfly valves should be provided with a solid foundation.
The main products of butterfly valve series are: pneumatic butterfly valve, manual vacuum butterfly valve GI, pneumatic vacuum butterfly valve GIQ, electric vacuum butterfly valve, pneumatic flange soft seal butterfly valve D641X, pneumatic flange hard seal butterfly valve D643H, pneumatic wafer soft seal butterfly valve D671X, pneumatic wafer Hard seal butterfly valve D673H, transformer-specific plate butterfly valve BDB-150 / 25, electric wafer soft seal butterfly valve D971X, electric flange soft seal butterfly valve D941X, electric PTFE lined wafer butterfly valve D971F, electric lined PTFE flanged butterfly valve D941F, electric Hard seal flange butterfly valve D943H, electric hard seal wafer butterfly valve D971H, electric hard seal flange butterfly valve D943H, wafer soft seal butterfly valve D71X, flange soft seal butterfly valve D41X, worm soft seal wafer butterfly valve D371X, worm soft seal flange Butterfly valve D341X, Wafer type hard seal butterfly valve D73H, Flange type hard seal butterfly valve D43H, Worm gear double clamp hard seal butterfly D373H, Worm gear flange hard seal butterfly D343H, Butt welding type hard seal butterfly valve D363H, Stainless steel wafer type butterfly valve D373W, Stainless steel flange butterfly valve 343W, aluminum alloy butterfly valve D71X-16L, ceramic butterfly valve D41TC, pneumatic ceramic butterfly valve D641TC, electric ceramic butterfly valve D941TC. Triple eccentric hard seal butterfly valve, multi-level hard seal butterfly valve, elastic hard seal butterfly valve D43Y / D73Y, single eccentric soft seal butterfly valve FBEX, WBGX, WBEX, WBLX, FBPX, WBPX, telescopic hard seal butterfly valve SD343H, telescopic soft seal butterfly valve SD341X, branch Ear type butterfly valve LTD371X, signal butterfly valve WBSX (XD371X), rubber lined wafer butterfly valve D371J, rubber lined flange butterfly valve D341J, low temperature butterfly valve DD43Y, extended butterfly valve DJ41X, worm wheel lined fluorine flange butterfly valve D341F, half lined butterfly valve D371FH, high temperature Butterfly valve D73 / 43Y, thermal insulation butterfly valve BD343H, two-way hardened butterfly valve D43H-100C / P, ventilation butterfly valve D341W / D941W-6, electric ventilation multi-leaf butterfly valve DBD-0.5, electric regulating butterfly valve ZAJW-0.6, plastic butterfly valve D71X / 371X- 6S, cast steel butterfly valve, cast iron butterfly valve, high pressure butterfly valve, center line butterfly valve, pinless butterfly valve, etc.
Body materials are: cast iron, cast steel, stainless steel, forged steel, low temperature steel.
Working pressure: National standard: 1.6-10.0MPA, American standard: 150LB-600LB, Japanese standard: 10K-16K.
Working temperature: -196 ° C- 550 ° C.
Valve caliber: DN50-DN1800.
Connection method: flange, wafer, welding.
Drive mode: manual, worm gear, pneumatic, electric.
Applicable medium: water, oil, gas, steam, etc.
Application fields: mechanical equipment, chemical equipment, general parts, industrial equipment, water supply and drainage equipment, papermaking equipment, pharmaceutical equipment, general equipment, petrochemical equipment, power equipment, metallurgy powder equipment, mining equipment, municipal and electronic industries.
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