The throttle valve is also known as a variable flow control.

Throttle valves are normally adjustable & the setting cannot be locked in the position.

The variable flow control valve should be fitted as close to the working element as possible and must be adjusted to match the requirements of the application.

Care must be taken that the throttle valve does close completely cutting off air to the system.

Quick exhaust valves are used to decrease the piston speed of cylinders.

Check\non return valves are devices preferentially stop the flow in______ the opposite direction.

Variable flow control valves influence the volumetric flow of the compressed air in______ directions.

Throttle valves are used for ________control of cylinders.

In order to release flow, pressure force must be_______ than spring force.

The speed of a cylinder can be _________considerably by allowing the return (exhaust)air from the cylinder to escape into the atmosphere from a position which is as close as possible to the cylinder port.