A pneumatic valve is an actuator that operates the valve by means of a compressed air. It opens and closes relatively quickly and is often used for quick two-position shutoff or flow regulation Therefore, in inflammable and explosive occasions, with high practicality, can be used to control the gas, liquid, oil, and various corrosive media.
Pneumatic valve accessories often change, with different accessories, can not reach a variety of different control mode, users can be based on the different work needs of the valve, to the corresponding configuration. The main products of pneumatic actuator valve are pneumatic control valve, pneumatic ball valve, pneumatic gate valve, pneumatic butterfly valve and other valves.
Introduction Of Pneumatic Triplet:
1. Pneumatic triplet is the most common accessory in pneumatic valve, its function can be simply summarized as: filtration + decompression + oil mist. The pressure reducing valve is a necessary accessory, no matter what kind of function pneumatic valve must be configured, its role is to pneumatic valve a standard power gas source pressure, the standard value is 0.4-0.7 MPA.
2.Pressure reducing valve is a kind of valve which can reduce the inlet pressure to a certain required outlet pressure by adjusting, and can keep the outlet pressure stable automatically by the energy of the medium itself.
Product Description Of Pneumatic Solenoid Valve:
1. Pneumatic solenoid valve, also known as the direction control valve, for only need to open and close the role of the two-position valve, solenoid valve is necessary configuration, solenoid valve through excitation / degaussing to achieve the pneumatic valve open / close control.
2. Solenoid valve is often used in on-off valve, through the voltage signal to control the gas supply circuit on-off, to control the valve switch. Definition: Solenoid valve movement of the control spool, generally through the control of the pneumatic actuator movement process to achieve the opening and closing of the valve.
Introduction of Limit Switch Of Pneumatic Actuator Valve:
1. Pneumatic limit, also known as the trip switch, can also be called a return. It is the automatic control system to detect the state of a valve in a field instrument, to open or close the position of the valve to the switch (contact) signal output, by the program controller or computer access sampling, confirm the next procedure.
2. The product can also be used as important valve interlock protection and remote alarm indication. The valve limit switch is effectively configured to indicate and feedback the movement limit position of the mechanical equipment if the valve position of the two-position valve is to be mastered.
Pneumatic Positioner:
Pneumatic positioner, it is the necessary configuration of pneumatic control valve, through the valve positioner can control the position of the valve at any opening, it will stem displacement signal as input feedback measurement signal, the output signal of the controller is used as the setting signal, and when the two are deviant, the output signal to the actuator is changed to make the actuator act The one-to-one correspondence between the displacement multiple of the valve stem and the output signal of the controller is established.
Points To Note When Selecting Pneumatic Actuator Valve:
1. If there is a safety condition control valve must also be equipped with solenoid valve, solenoid valve to force the control valve in an unexpected situation in the safe valve position.
2. For large capacity cylinder valve, in order to speed up the action of the valve, the guiding valve must be equipped, the role of the guiding valve is small gas signal to drive the guiding valve to switch the air pipeline The cylinder valve has a faster charging / deflating air path, there are a variety of guiding valve, which depends on the specific needs of pneumatic valve to match.
3. If the valve position to be controlled is the regulator, then a valve opening transmitter must be installed, which can feedback the valve opening signal in any position. Due to process requirements, the valve may be open normally, closed slowly, or open slowly, closed normally, then need to be equipped with pneumatic damper, damper is to control the amount of air through the size, through regulation to achieve the required valve speed.
Post time: Nov-25-2021