Pneumatics 3

Question 1

COMPOSITION OF PNEUMATIC
CONTROL SYSTEM

Answer 1

• Energy Supply
• Input Elements
• Processing Element
• Final Control Element
• Actuating Devices

Question 2

are devices for controlling or regulating “start”, “stop” and direction as well as pressure or flow of a pressure medium conveyed by hydro pump or stored in s container.

Answer 2

Valves

Question 3

is a device that determine the flow of air between its ports by opening, closing or changing its internal connections.

Answer 3

Directional Valve

Question 4

this can stop the flow completely in one direction, and their flows in the opposite direction with as low as pressure loss as possible. Blocking of the one direction can be affected by cones, balls, plates or diaphragms.

Answer 4

Check Valve

Question 5

this valve is also called
double control valve or double check valve.
This non return valve has two inlets X and Y
and one outlet A. If compressed air applied to
inlet X, the ball seals off inlet Y and the air
flows from X to A. Alternatively, the air flows
from Y to A inlet X is closed. It is also called
OR valve/component.

Answer 5

Shuttle Valve

Question 6

this is also known
as a speed regulating valve. The air flow is
throttled in one direction. A check valve blocks
the flow of air in one direction, and the air
flow can flow only through the regulated
cross section. In the opposite direction, the air
can flow freely through the opened check

Answer 6

Throttle Relief Valve

Question 7

are used to
increase the piston speeds in cylinders.
This enables lengthy return times to be
avoided, particularly with acting cylinders.
The valve has a blockable pressure
connection P, blockable exhaust R and an

Answer 7

Quick Exhaust Valves

Question 8

is also known as
an AND valve. It is used mainly for
interlocking controls, check function or
logic operations.

Answer 8

Two Pressure Valve

Question 9

are elements which predominantly
influence the pressure, or are
controlled by the magnitude of the
pressure.

Answer 9

Pressure Control Valves

Question 10

Three Categories in pressure control valve

Answer 10

1. Pressure Regulating Valve
2. Pressure Limiting Valve
3. Sequence Valve

Question 11

influence the volumetric flow of
the compressed air, in both
directions.

Answer 11

Flow Control Valve