# POE 3.2

### 34 terms by ccentivany

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### Absolute Pressure

The total pressure exerted on a system, including atmospheric pressure.

### Atmospheric Pressure

The pressure exerted by the weight of the atmosphere above the point of measurement.

### Boyle's Law

The volume of a gas at constant temperature varies inversely with the pressure exerted on it.

### Charles' Law

States that the volume of a confined gas is proportional to its temperature, provided its pressure remains constant

### Check Valve

A valve that allows flow in one direction but prevents flow in the opposite direction.

### Compressor

An air pump that compresses air into a receiver tank.

### Crank

A part of an axle or shaft bent out at right angles, for converting reciprocal to circular motion and vice versa.

### Cylinder

A device used to convert fluid power into mechanical power in the form of linear motion.

### Directional-Control Valve

Used to control which path fluid takes in a circuit.

### Double-Acting Cylinder

A cylinder that can act under pressure in both directions (extend and retract) to move a load.

### Filter

A device used to remove contamination from a fluid

### Flow Meter

A device used to measure flow rate.

### Flow Rate

The volume of fluid that moves through a system in a given period of time.

### Flow Velocity

The distance the fluid travels through a system in a given period of time.

### Flow-Control Valve

Used to start and stop flow in a circuit

### Fluid Power

The use of a fluid (liquid or gas) to transmit power from one location to another.

### Gay-Lussac's Law

The absolute pressure of a confined gas is proportional to its temperature, provided its volume stays constant

### Hydraulics

The use of a liquid flowing under pressure to transmit power from one location to another

### Lubricator

A device used to spray an oil mist into the stream of a pneumatic system.

### Pascal's Law

Pressure exerted by a confined fluid acts undiminished equally in all directions

### Piston

A sliding piece moved by or moving against fluid pressure which usually consists of a short cylindrical body fitting within a cylindrical chamber or vessel along which it moves back and forth.

### Pneumatics

The use of gas flowing under pressure to transmit power from one location to another.

### Pressure

The force per unit area exerted by a fluid against a surface

### Pressure Regulator

A type of pneumatic pressure control valve that controls the maximum pressure in a branch of a circuit.

### Pressure Relief Valve

A type of pressure control valve that limits the maximum pressure in a hydraulic or pneumatic circuit.

### Pump

A device used to create flow in a hydraulic system.

A device that holds the compressed air in a pneumatic system.

### Reservoir

The tank that holds the fluid in a hydraulic system.

### Single-Acting Cylinder

A cylinder that acts under pressure in one direction only and returns automatically when the pressure is released.

### Solenoid

A switching device that uses the magnetic field generated by an electrical current for actuation.

### Transmission Lines

Used to transport fluid in a circuit

### Valve

Any device that controls, either automatically or manually, the flow of a fluid.

### Viscosity

A measure of a fluid's thickness or resistance to flow.

### Volume

The amount or quantity of something.

Example:

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