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2. Air-operated valve - Wikipedia

   en.wikipedia.org/wiki/Air-operated_valve

   An air-operated valve, also known as a pneumatic valve, is a type of power-operated pipe valve that uses air pressure to perform a function similar to a solenoid. As air pressure is increased, the compressed air starts to push against the piston or diaphragm walls which causes the valve to actuate. Whether the valve opens or closes depends on ...

3. Valve actuator - Wikipedia

   en.wikipedia.org/wiki/Valve_actuator

   Air (or other gas) pressure is the power source for pneumatic valve actuators. [1] They are used on linear or quarter-turn valves. Air pressure acts on a piston or bellows diaphragm creating linear force on a valve stem. Alternatively, a quarter-turn vane-type actuator produces torque to provide rotary motion to operate a quarter-turn valve.

4. Hand pump - Wikipedia

   en.wikipedia.org/wiki/Hand_pump

   Hand-powered force pump, with an air chamber to smooth out variations in flow rate. Hand pumps are manually operated pumps; they use human power and mechanical advantage to move fluids or air from one place to another. They are widely used in every country in the world for a variety of industrial, marine, irrigation and leisure activities.

5. Control valve - Wikipedia

   en.wikipedia.org/wiki/Control_valve

   Globe control valve with pneumatic diaphragm actuator and "smart" positioner which will also feed back to the controller the actual valve position. Taking the example of an air-operated valve, there are two control actions possible: "Air or current to open" – The flow restriction decreases with increased control signal value. "Air or current ...

6. Bicycle pump - Wikipedia

   en.wikipedia.org/wiki/Bicycle_pump

   A third type of valve called the Dunlop (or Woods) valve exists, but tubes with these valves can be filled using a Presta pump. [1] [2] Several basic types are available: Floor pumps; Frame-mounted; Compact or mini; Foot-operated; Double-action; Blast or tubeless; In its most basic form, a bicycle pump functions via a hand-operated piston.

7. Railway air brake - Wikipedia

   en.wikipedia.org/wiki/Railway_air_brake

   In his patent application, Westinghouse refers to his 'triple-valve device' because of the three component valvular parts comprising it: the diaphragm-operated poppet valve feeding reservoir air to the brake cylinder, the reservoir charging valve, and the brake cylinder release valve. Westinghouse soon improved the device by removing the poppet ...