Yes there is. Pneumatic valve springs. They are metal bellows that have air in them. Their use is in replacing metal wire springs in a high-speed combustion engine. An example would be Formula One engines.
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pneumatic (air): pneumatic tools- air hammers, grinders, etc. hydraulic system (liquid): bucket actuators on a front loader or on a bulldozer. Other examples in the automotive industry: pneumatic- air bag suspensions. hydraulic- brake system or steering system.
Some actuator or devices are operated by compressed air. These devices are known as pneumatic components
erm.... Pneumatic Drill Pneumatic Cylinder Pneumatic Actuator Pneumatic Switch Pneumatic Nailgun Pneumatic Air gun Pneumatic Launcher Bit more than four, but now you can choose, hope this helps,
It depends on the dam. Some dams are hydraulic and some are pneumatic. Short answer: Both
hydralics are used in car brakes,space ships,air planes,heavy equipment,lifts.
Pneumatic systems are usually closed systems. Blowing up a party balloon would be one example. A cycle pump would be another, and an air-based system for moving components in pipes would be another. A windmill or a hand fan would not usually be considered to be pneumatic systems because they do not enclose the air component.