A shuttle valve is designed to allow fluid or gas flow from one of two inlet sources to a common outlet by automatically selecting the higher pressure source. It functions using a movable shuttle that blocks the lower pressure inlet and is commonly used in hydraulic and pneumatic systems, as well as emergency backup systems. Shuttle valves are vital for ensuring continuous operation in the event of pressure failure from one source.

1. Shuttle Valve: A
Comprehensive Guide
Understanding its Function, Types, and Applications

2. What is a Shuttle Valve?
● A shuttle valve is a type of
valve that allows fluid or gas
to flow from one of two inlet
sources to a common outlet.
● It automatically selects the
source with higher pressure
and blocks the lower
pressure source.
● Used in systems requiring
redundancy or alternate
pressure sources.

4. How Does a Shuttle Valve Work?
Content:
● Inlet A and Inlet B are two pressure sources.
● The valve contains a movable shuttle or piston that shifts based on which inlet has
higher pressure.
● The shuttle blocks the inlet with lower pressure, allowing flow from the higher-
pressure source.

5. Types of Shuttle Valves
Content:
Hydraulic Shuttle Valves: Used in hydraulic systems for controlling oil
flow.
Pneumatic Shuttle Valves: Common in pneumatic systems for air flow
control.
Pilot Operated Shuttle Valves: Controlled using a pilot signal, suitable
for complex systems.

6. Where Are Shuttle Valves Used?
Used in emergency
backup systems where
alternate pressure
sources are needed.
Common in braking
systems, pneumatic
systems, and hydraulic
circuits.
Ensures
continuous
operation in case of
pressure failure
from one source.

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