Electromagnetic emergency shut-off valve action principle and structure description
Second, the role of principle and structure description:
1. Single-acting working principle: When the valve is in the condition of no external pressure operation, the valve disc is normally closed. When it is used on the pipeline or storage tank system, the valve is opened by the pressure of the power source and the gas source, and the pressure in the gas path When the valve is used in the open state, when the valve needs to be closed, the pressure of the power source or the air source can be vented, and the valve is automatically closed.
2. When the flap is closed, the pressure is achieved by opening the pressure relief valve.
3 , normally open type can be replaced by single action or customized according to requirements.
4. Double-acting working principle: When the controller presses a pre-programmed program to output an electrical signal to an electromagnetic reversing valve, the electromagnetic reversing valve acts so that the pressurized instrument air source is switched by the electromagnetic reversing valve. The lower chamber of the pneumatic actuator pushes the piston upward, the piston drives the valve stem, the valve stem moves the valve core to open the valve, and the electric signal of the reversing valve is cut off, so that the piston moves in reverse to close the valve. Such a valve configuration is called Closed. On the other hand, to make a normally open type, it is only necessary to change the connection mode between the electromagnetic directional valve and the pneumatic actuator.Face Mask Machine,Sleep Apnea Machine ,Sleep Apnea Mask ,Fruit Mask Machine
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