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Pneumatic on off valve

A pneumatic on off valve is a type of valve that uses compressed air to control the flow of fluids or gases in a piping system. It operates in a binary manner, either fully open or fully closed, allowing for quick and efficient control of material flow.

Product Description

The pneumatic on off valve  is powered by a cylinder to achieve its switching function.

 

 

In terms of structure, there is no significant difference between the valve body of a pneumatic on-off valve and that of an electric switching control gate. The main difference lies in the driving forces that change the valve position.

 

The pneumatic on-off valve is driven by control air in the air circuit, which acts on the operating cylinder in the valve. This pressure pushes the piston to move, driving the slider to change the valve position.

 

In contrast, the electric flow control gate generates electromagnetic suction through a spiral coil, which drives the slider to change the valve position of the valve body.

 

 

The pneumatic switch control gate changes its position by controlling the air in its cylinder to create a certain pressure. This pressure then pushes the piston and slider to change the valve position. As a result, the actual control speed is relatively slow.

 

In contrast, the electric flow control gate generates suction force at a relatively fast speed. Therefore, from the perspective of working speed, the electric switch control gate operates faster.

 

 

In addition, the control signal connected to the pneumatic switch control gate is a pressure signal. This signal must be connected with a pipe and requires a large volume.

 

In contrast, the control signal of electric switching valves is generally a current signal. This signal can be connected by wires, and there is no operating plunger. Therefore, the volume of the electric flow control gate is smaller than that of pneumatic switch control gates.

 

Specification

 

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Specification

 

Unit

B200 B250 B300 B400 B500 B630 B800
Flow range m³/h 40-260 60-360 70-480 90-650 10-820 140-1450 160-1600
Circulation area 0.012 0.014 0.017 0.026 0.032 0.051 0.073
Power supply V AC38050Hz (can be determined according to customer requirements)
Corner θ° 0~90
Input signal mA 4~20
Feedback signal mA 4~20
Breathable area 0.057 0.064 0.07 0.09 0.13
Air consumption m³/min 0.4 0.5 0.6 0.7
Traffic characteristics Straight line or equal percentage
Action time 30s
Operating temperature ≤180℃

 

 

Drawing & Datas

Specification L La n*L1 L2 L3 L4 L5 n*L6 n*d H
B250 340 520 1*100 100 72 63 75 4*70 20*φ12 320
B300 390 520 2*85 90 72 63 75 4*70 22*φ12 320
B400 490 520 2*110 115 72 63 75 4*70 22*φ12 320
B500 580 590 4*90 90 90 75 95 3*95 24*φ14 370
B630 710 620 4*110 115 65 76 110 3*110 24*φ14 410

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