To minimize personal injury and equipment
damage when using compressed gases, observe all
practical operating safety precautions, including the
Do NOT use compressed air to clean parts of your
body or clothing or to perform general space cleanup
instead of sweeping.
NEVER attempt to stop or repair a leak while the
leaking portion is still under pressure. Always isolate.
depressurize. and tag out the portion of the system to be
Avoid the application of heat to the air piping
system or components, and avoid striking a sharp,
heavy blow on any pressurized part of the piping
Avoid rapid operation of manual valves. The
heat of compression caused by a sudden high-pressure
flow into an empty line or vessel can cause an explosion
if oil is present. Valves should be slowly cracked open
until air flow is noted and should be kept in this position
until pressures on both sides of the valve have
equalized. The rate of pressure rise should be kept under
200 psi per second, if possible. Valves may then be
Do NOT subject compressed gas cylinders to
temperatures greater than 130°F. Remember, any
pressurized system can be hazardous to your health if it is
not maintained and operated carefully and safely.
REVIEW 2 QUESTIONS
What two properties allow gas the ability to yield
to force and return to its original condition when
the force is removed?
What law states that when the temperature of a
gas is constant, the volume of enclosed gas
varies inversely with pressure?
What four qualities should the ideal gas have for
What is the most undesirable quality of
compressed air when used as a fluid medium for
a pneumatic system?
A pneumatic system with an operating
pressure of 500 psi is known as what type of
What are the three designs of air compressors?
What device in a rotary air compressor removes
oil from the compressed air before the air leaves
the service valves?