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TieLing ZG Valve Technology Co.,Ltd
Add:Fuzhou Road,Economic Development Zone,Tieling,Liaoning,China
Tel:+86-24-72690555
Fax:+86-24-72690111
Ph:+8615941025678
E-mail:tlvalve@aliyun.com
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Butterfly Valve The Valve Can Be Used For Control
- May 11, 2017 -

Butterfly valve, also known as the flap valve, is a simple structure of the control valve can be used for low-pressure pipe media switch control butterfly valve is closed (disc or butterfly plate) for the disc, around the valve shaft rotation to achieve opening and closing A valve that can be used to control the flow of various types of fluids such as air, water, steam, corrosive media, mud, oil, liquid metal, and radioactive media. In the pipeline from the main cut off and throttling effect. Butterfly valve opening and closing parts is a disc-shaped disc, in the valve body around its own axis of rotation, so as to achieve the purpose of opening or closing or adjustment.

Butterfly valve is the opening and closing parts (butterfly plate) around the fixed shaft rotation of the valve, mainly through the disc-shaped valve reciprocating turn to open, close or adjust the flow. It has the characteristics of small volume, light weight and small installation size. It is mainly used for conveying large temperature pipes with temperature less than 80 ℃ and less than 1MPa pressure water, air, gas and other medium.

Before installation, check the drive limit bolt opening and closing conditions, the media flow is consistent with the logo, the installation, the butterfly plate to stop in the closed position, and try to install on the vertical pipe, if the need for horizontal installation, the valve shaft Should not use the vertical installation, the best horizontal installation, if not the level of installation, can be used to install the valve shaft tilt, but not allowed more than 45 degrees.

Butterfly valve (butterfly valve) refers to the closure (disc or butterfly plate) for the disc, around the valve shaft rotation to achieve the opening and closing of a valve in the pipeline from the main cut and throttling effect. Butterfly valve opening and closing parts is a disc-shaped disc, Butterfly Valve in the valve body around its own axis of rotation, so as to achieve the purpose of opening or closing or adjustment. Butterfly valve fully open to the whole is usually less than 90 °, butterfly valve and butterfly rod itself does not have self-locking ability, in order to butterfly plate positioning, to install the worm on the stem reducer. The use of worm reducer, not only can make the disc with self-locking ability, so that the butterfly plate to stop at any position, but also improve the valve operating performance. The characteristics of industrial butterfly valve can be high temperature, suitable pressure range is also high, the valve nominal diameter, the valve body made of carbon steel, valve plate sealing ring with metal ring instead of rubber ring. Large-scale high-temperature butterfly valve made of steel welding, mainly used for high-temperature media, smoke duct and gas pipeline.

    Electrically adjustable type

    Electric adjustment butterfly valve is an electric valve and electric control valve in a variety. The main ways are: flange type and folder type. Is an important executive unit in the field of industrial automation and control. Electric adjustment butterfly valve installation points two analysis: installation location, height, import and export direction must meet the design requirements, pay attention to the direction of media flow should be consistent with the direction of the valve body arrow, the connection should be firmly close. Electric control butterfly valve must be installed before the appearance of inspection, Butterfly Valve the valve nameplate should be consistent with the existing national standard "common valve mark" GB12220 requirements. For working pressure greater than 1.0MPa and in the trunk pipe to play a role in the cut off the valve, the installation should be carried out before the strength and rigidity test. Qualified after use. Strength test, the test pressure of 1.5 times the nominal pressure, the duration of not less than 5min, the valve shell, the filler should be no leakage for the qualified. The electrically adjustable butterfly valve can be divided into biased plate type, vertical plate type, inclined plate type and lever type according to structure. According to the seal can be divided into soft seal and hard seal type two. Soft seal type is generally sealed with rubber ring, hard seal type is usually sealed with metal ring.