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.
Butterfly valve series: import butterfly valve, imported from Germany, butterfly valve, British imports butterfly valve, imported from Japan, butterfly valve, U.S. imports of butterfly valves. Wafer type butterfly valve, butt weld butterfly valve, flanged butterfly valve. Pneumatic butterfly valve, pneumatic vacuum butterfly valve, pneumatic butterfly valve flange d643, d641, pneumatic wafer butterfly valve d671, d673, pneumatic soft sealing butterfly valve d671, d672, d641, Pneumatic Hard Seal Butterfly Valve d673h, d643h, d663h, electric butterfly valve, electric butterfly valve wafer d973, d971, electric butterfly valve flange d941, the d943 electric soft sealing butterfly valve d971x, d972x, d941x electric hard sealing butterfly valve d943h the d973h, d963h. The manual butterfly 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, a single eccentric soft seal butterfly valve fbex, wbgx, wbex wblx, fbpx, wbpx. Telescopic butterfly valve sd343h, sd341x. Lug butterfly valve ltd371x. Signal butterfly wbsx (xd371x). Rubber lined butterfly valve d371j. The fluorine butterfly valve d341f, half lining butterfly valve d371fh. The insulation butterfly valve bd343h. High temperature butterfly valves, high pressure butterfly valve, two-way pressure hard sealed d373, d343h-100c / p. Ventilation butterfly d341w/d941w-6 electric ventilated multi-leaf butterfly valve dbd-0.5. Electrically adjustable butterfly valve zajw-0.6. The plastics butterfly valve d71x/371x-6s. Manual vacuum butterfly 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
Operating temperature -40 ° c-550 ° c.
Valve size dn15-dn1000 The.
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.
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
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, you 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 butterfly valve defects are 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, during installation, the valve 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.
Butterfly valve series products have been widely used in a variety of chemicals, liquefied petroleum gas, to water supply and drainage, food, pharmaceutical, boiler and steam system, mining, paper, power generation, urban construction, municipal, and other areas, and the daily lives of residents.