In practice, according to the need of different direction control valves can be divided into several categories: ( 1) According to the direction of the flow of gas in the pipeline, if allow air to flow in one direction only such a type called a one-way valve, such as one-way valve, shuttle valve, etc. Can change the gas flow control valve is called directional control valve, such as common way2port 2, 2 way3port, 2 way5port, 3 way5port etc. ( 2) According to the control mode can be divided into the solenoid valve, mechanical Industrial Valves, pneumatic valve, control valve. The solenoid valve and can be divided into single and double electric control valve; Roller mechanical valve can be divided into the ball head valve, valve, etc; Pneumatic valve can also be divided into single pneumatic valve of pneumatic and double; Human valve can be divided into manual valve, foot valve two kinds. ( 3) According to the principle of work can be divided into straight moving valve and pilot valve, straight moving valve is by manpower or electromagnetic force, aerodynamic force directly achieve the requirements of the reversing valve; Pilot valve is made up of the guide head and valve body part 2, has the guide piston head drive inside of the Industrial Valves stem to realize reversing valve body. ( 4) According to the working position of the reversing valve stem valves can be divided into 2 way, 3 way valve. ( 5) According to how much their valve on the porosity, the port can be divided into 2, 3 port, port valve 5. In this paper, the keyword search: more technical articles valve product supply information
Collectively, the effect of water gate valve on industrial society has been to eliminate y gate valve and drastically reduce the time long associated with resilient seated valve.
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