Pneumatic valves with different accessories, can reach all sorts of different control mode, the user can according to the different work needs of the valve, to carry out the corresponding configuration. The following detailed introduce for everybody pneumatic valve attachment collocation have what effect?

1, pneumatic triple pieces is for common accessories of pneumatic valves, its action can be simply summarized as: filtration + stress + oil mist. The pressure reducing valve is with attachment, whatever the function of the pneumatic valve must be configured, its role is to give a pneumatic valve standard dynamic air supply pressure, the standard value is 0. 4 - 0. 7MPa。

pressure reducing valve is by regulating, reduced the inlet pressure to a particular need to export pressure force, and depend on the energy of the medium itself, make the outlet pressure automatically keep the stability of the valve.

。 Duplex ( Filters, pressure reducing valve) Action: complete the compression of the instrument air filter and reducing function

b. Sanlian pieces ( Filter, pressure reducing valve, oil mist device) Function: complete decompression for instrument air filtration and compression function, and the air lubrication.

2, pneumatic solenoid valve, also called the direction control valve, the only need to open and close function of two valves, solenoid valve is a necessary configuration, electromagnetic valve through the excitation/degaussing to achieve control of the pneumatic valve open/close. Solenoid valves are often used to switch valve, gas source gas path through voltage signal control on and off, to control the switch of the valve. Definition: electromagnet for valve control valve core movement, the general is realized by controlling the pneumatic actuators movement process of opening and closing of the valve.

3 limit switch, valve, also known as the travel switch, also can call letter. It is the state of the automatic control system to detect the valve a kind of field instruments, to the valve open or closed position to switch ( Contact) The signal output, accepted by the programmable device or a computer search for sampling, confirm and executing the next program. The product also can be used as the important valve interlock protection system and the remote alarm indication. If you want to grasp two valve valve position, limit switch valve is a valid configuration, is used to indicate mechanical equipment and feedback of movement limit position of the electric switch.

4, valve positioner, it is the necessary configuration, pneumatic control valve can be controlled by the valve positioner of the opening of the valve in any position, it will stem the displacement feedback signal as the input signals, as set in the controller output signal, comparing, when there is deviation, change of its output signal to the actuator, the actuator movement, the valve stem is established displacement times and one to one correspondence relation between the controller output signal.

note: if there is a safety control regulator must also configure the electromagnetic valve, through the electromagnetic valve to force control valve in case accident in safety valve position. 。

for the large capacity of the cylinder Industrial Valves, in order to speed up the action of the valve, pilot valve is also must be configured, the role of the pilot valve is driven by a small volume of gas signal to pilot valve to switch large gas pipe line, make the cylinder valve has fast charge/discharge gas gas path, there are many types of pilot valve type, it selected according to the specific needs of pneumatic valve.

if you want to master valve is the regulator, then you must install the valve opening transmitter, it can feedback the valve in any position opening signal. Due to the needs of the process equipment, the valve may be normal, slow, slow or open, normally closed, then you need to configure the pneumatic damper, by the size of the damper is the control volume, the movement speed by adjusting the need to achieve the valve.

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