# Questions tagged [pneumatic]

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### I want to understand this pneumatic circuit

I have trouble understanding the following pneumatic circuit diagram: I am new to reading circuit diagrams and i am unfamiliar with some of the symbols. I would appreciate if somebody could explain ...
• 51
1k views

### Estimating Maximum Speed for a Pneumatic Cylinder

I am designing an machine that is going to use a pneumatic cylinder to accelerate a projectile. I have a tentative cylinder specified, and am working on the control and supply side. I have verified ...
• 4,501
216 views

### Do non-linear passive pneumatic throttles exist?

On of the more simple throttles is a channel, which is described by the Hagen-Poiseuille equation: $$\Delta P = \frac{8\mu L Q}{\pi r^4}$$ This equation, when rearranged, tells us that the Flowrate $Q$...
• 1,618
1 vote
17 views

### How to repair stripped, leaky pneumatic fitting?

I have a pneumatic cylinder with a stripped fitting, which causes a slow leak. I took it to a machine shop and he tried to re-thread it but there wasn't enough good metal left to get a good thread. He ...
• 111
1 vote
24 views

### Is this Proportional Electro-pneumatic valve a direct replacement for other valves listed?

In the midst of trying to redesign the pneumatic subsystem of a combined system, I'm at the point of validating a new valve would serve as a direct replacement. The reason for the redesign is an ...
• 111
1 vote
40 views

### Choosing a blower for a Pneumatic Conveyor

Basically we are designing a pneumatic conveyor system for transferring 11 tons of beans per hour. We need to decide on the specifications of the blower. What are the calculations necessary to decide ...
• 111
1 vote
385 views

### Pneumatic cylinder: Pressure rating

I want to create a Pneumatic cylinder, The purpose is, Inside it will will contain a Nylon piston, and one end will be filled with clay. Cylinder will be closed from either side using end caps, which ...
• 111
1 vote
376 views

### What type of pneumatic valves would represent the valves in the schematic?

What type of pneumatic solenoid valves would represent the valves in the schematic? Specifically, the lower valves could be represented by a 5 port 4 way 2 position valve. This is because there is ...
• 111
1 vote
27 views

### Air demand for powder fluidization system

I need a good estimate of the air demand for a system to fluidizde a powder. We a have silo with a 60° cone and a rotary cell feeder attached to the opening in the cone. The powder (fine powdered ...
• 4,618
1 vote
28 views

### Proper way to power/use a vacuum cylinder?

I'm considering using a vacuum cylinder in my project (like these ones) to lift sheets of cardboard, but being new to mechanical engineering I'm not at all sure what I need to attach to operate one, ...
40 views

### Differential pressure in manometer Mx

For the pneumatic command circuit, if you press button B1 for 0.3 s, after 2 s the differential pressure in manometer Mx will be: a) 0 bar; b) 6 bar I think the right answer is not 0 bar. However, I ...
• 13
21 views

I've been working on converting a 500Kg pneumatic press to use it for injection molding. In order to do that though I'd like to raise the cylinder up maybe 12". So I fabricated 4 5/8 CR rods and ...