This compressors use inward stroke of piston to draw gas into a chamber and then use an outward stroke to positively displace the gas.

A compressor is a fluid handling machine that takes in gas at a higher density and pressure via suction nozzle and compresses it.

In the multi-stage compressor, the high temperature damages the cylinder head and burns lubricating oil.

In the multistage compressor, the temperature is low and intercooling is more efficient than cooling with a cylinder wall surface. It also reduces thermal stress.

Air compressors force air in a chamber where the volume is decreased to compress the air.

Have two compression chambers on either side of a piston.

Friction between the packing and piston rod is increased by the injection of lubricating oil into the stuffing box.

Prevent process gases from leaking to the atmosphere where the compressor shaft exits the casing.

Is a form of aerodynamic instability in axial compressors or centrifugal compressors

The pressure differential across the machine increases when flow is reduced by throttling in either the suction or discharge

The lowest continuous flow at which the pump was permitted to operate.