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The main characteristics and the use of chrome molybdenum steel gate valve

time:2015/11/21from:Hangzhou Kaiwei Valve Group Co., LTD
Chrome molybdenum steel gate valve imported equipment specializing in the production of valve soft sealing gate valve, for many years engaged in the localization of the valve inlet, and continue to absorb foreign advanced valve technology, accumulated rich experience in the design, manufacturing and quality control area.
For the common problems of domestic valve, the development of the following characteristics of the flange connection electric gate valve. Chrome molybdenum steel gate valve is mainly used in petroleum, chemical, metallurgy, pharmaceutical and other kinds of systems, the valve jacket is welded in the valve between the two flanges, valve side, bottom set jacket connection port, the jacket can be freely through the steam or other thermal insulation medium, to ensure that the viscous medium can smoothly flow through the valve.
The main characteristics and the use of chrome molybdenum steel gate valve:
1, the structure of Cr Mo steel gate has the advantages of compact structure, reasonable design, good rigidity, smooth channel, small coefficient of flow resistance.
The sealing surface 2, chromium molybdenum steel gate made of stainless steel and hard alloy, long service life.
3, chrome molybdenum steel valve with flexible graphite packing, reliable sealing, flexible operation.
Drive 4, manual gate valve, chrome molybdenum steel, electric, pneumatic, gear transmission
Structure 5, chrome molybdenum steel gate valve: single flexible wedge gate, rigid wedge type single gate type.
6, chrome molybdenum steel gate valve is widely used as an opening and closing device to connect or disconnect the line media in the petroleum chemical industry, thermal power plant, oil, water vapor line.
Chrome molybdenum steel gate valve is a gate opening and closing parts, perpendicular to the direction of movement and direction of flow of the gate, gate valve can be fully open and fully closed, can not be adjusted and the throttle. Wedge gate valve gate can be made into a whole, called the rigid gate; also can be made to produce micro deformation of the gate, in order to improve its process, to make up the sealing surface angle in the process of deviation, which is called the gate.
Chrome molybdenum steel gate valve opening and closing is controlled by the electric device, electric device respectively, with special motor, reducer, torque control mechanism, field operating agencies, manual and electric switching mechanism. In addition to the local operation, but also can carry out remote operation.
Gate valve is closed, the sealing surface can only rely on media pressure to seal, that is, on the media pressure to seal the sealing surface of the gate to the other side of the valve seat to ensure the sealing surface of the seal, which is self sealing. Most of the valve is sealed by force, that is, when the valve is closed, to rely on external forces to force the gate valve to the valve seat, to ensure the sealing surface of the seal.
Chrome molybdenum steel gate valve is closed, the sealing surface can only rely on media pressure to seal, that is, to rely on medium pressure of the gate sealing surface pressure to the other side of the seat to ensure the sealing surface of the seal, which is self sealing. Most of the valve is sealed by force, that is, when the valve is closed, to rely on external forces to force the gate valve to the valve seat, to ensure the sealing surface of the seal.
The gate of the gate of Cr Mo steel with the stem with a straight line, called the lift rod valve is also called the next bar gate. Usually in the lift rod with a trapezoidal thread, through the valve at the top of the nut and the body of the guide groove, the rotary motion into linear motion, that is, the operating torque into the operating thrust. When the valve is opened, when the gate valve to increase the height of the 1:1 times the diameter of the fluid, the fluid channel is completely smooth, but at run time, this position is unable to monitor.
When the actual use, is the stem of the apex as a symbol, that is, open position, as it is the full open position. In order to consider temperature changes occur locked phenomenon, usually open to the vertex position, and then rewind 1 / 2-1 circle, as a fully open valve position. Therefore, the valve fully open position, the disc position that trip to determine. Some gate valve, valve stem nut on the gate, hand wheel rotation to drive the valve stem rotation, and so that the gate valve, this valve is called the rotating rod valve or gate valve.
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