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2. The 12 Best Bike Pumps of 2023 - AOL

   www.aol.com/best-bike-pumps-2022-193500120.html

   The Air Tool Comp V2 has a dual-range pressure gauge: Half of the gauge is for low pressures and runs from zero to 30 psi in one-psi gradients, while the other half is for high-pressure tires and ...

3. Bicycle pump - Wikipedia

   en.wikipedia.org/wiki/Bicycle_pump

   Some pumps have a gauge that shows the pressure of air that is forced into the tire. Once the tire is at the correct pressure, the pump valve can be removed from the tire, and the cap can be replaced on the tire valve. There are two main types of tire valves to which the bicycle tire pump attaches. These are the Presta valve and the Schrader ...

4. Diaphragm (mechanical device) - Wikipedia

   en.wikipedia.org/wiki/Diaphragm_(mechanical_device)

   It serves either as a barrier between two chambers, moving slightly up into one chamber or down into the other depending on differences in pressure, or as a device that vibrates when certain frequencies are applied to it. [1] A diaphragm pump uses a diaphragm to pump a fluid. A typical design is to have air on one side constantly vary in ...

5. Pressure measurement - Wikipedia

   en.wikipedia.org/wiki/Pressure_measurement

   Instruments used to measure and display pressure mechanically are called pressure gauges, vacuum gauges or compound gauges (vacuum & pressure). The widely used Bourdon gauge is a mechanical device, which both measures and indicates and is probably the best known type of gauge.

6. Flow control valve - Wikipedia

   en.wikipedia.org/wiki/Flow_control_valve

   These types of valves are also known as automatic control valves. The hydraulic actuators respond to changes of pressure or flow and will open/close the valve. Automatic control valves do not require an external power source, meaning that the fluid pressure is enough to open and close them.

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9. Needle valve - Wikipedia

   en.wikipedia.org/wiki/Needle_valve

   The intention here is to obtain a well-defined seat between two narrow mating surfaces, giving firm shutoff of the flow from only a light float pressure. Needle valves are also commonly used to provide shut off for the pressure gauge or on applicators to shut off the supply of NH3 to the knives in anhydrous ammonia (NH3) applications. [2]