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What are the advantages of pneumatic valves? !

2018-04-08View Original

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In many places, most valves are electric, but a small number of valves are pneumatic. What are the advantages of these pneumatic ones? Faster opening and closing speed?
Reply #22018-04-08
No electricity is needed, so there’s no need to install any related electrical facilities: lol
Reply #32018-04-08
Use a pneumatic safety switch to avoid wasting electrical energy and save money: lol
Reply #42018-04-08
It has a low cost, can be implemented quickly, and offers higher safety performance.
Reply #52018-04-08
Main advantages of pneumatic actuators: 1. They accept continuous pneumatic signals and produce linear displacement (with an electric/pneumatic conversion device, they can also accept continuous electrical signals); some models, equipped with a rocker arm, can produce angular displacement. 2. It has positive and negative action functions. 3. It has a high moving speed, but the speed slows down when the load increases. 4. The output force is related to the operating pressure. 5. High reliability, but the valve cannot maintain its position in the event of a gas supply interruption (it can maintain its position with the use of a check valve). 6. Segmented control and program control are difficult to implement. 7. It is simple to maintain and repair, and has good adaptability to the environment. 8. High output power. 9. It has explosion-proof functionality. Disadvantages: Affected by fluctuations in air compressor pressure, it is prone to being impacted by moisture in the air compressor during winters in the north, leading to freezing and failure of the transmission components.
Reply #62018-04-08
The power industry makes more use of electric systems, while the petrochemical industry makes more use of pneumatic systems.
Reply #72018-04-08
Compressed air needs to have its water removed, right?
Reply #82018-04-08
Are there more advantages to electric ones?
Reply #92018-04-08
Price advantage, safety. If there’s an electric option, of course go with that – who wants to add another pneumatic system? It’s all due to considerations of safety and cost. How expensive are large electromagnetic valves, and how prone are they to burning out? Of course, using pneumatic systems is more convenient, cheaper, and less likely to fail
Reply #102018-04-08
I see, I’ve been upset about this all along.

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