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Flow bean
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Flow control valve
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Mixing valve
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Tide gauge
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Differential pressure responsive bellows device
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(en)
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Rotatable dial for determining amount of weight on formation
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(en)
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Flow governor
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锥面环形缝隙节流比可调节流器
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Apparatus for relaying a control function through compressed air
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Reciprocating mixing valve
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Hydro-pneumatic pressure regulator
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Fluid-mixing apparatus
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Constant volume flow control valve
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(ru)
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Improvements in Turbine Liquid Flow Meters
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Device for measuring steam and other fluids.
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Регул тор потока рабочей жидкости гидропривода
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Fluidic devices
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Dispositif déprimogène à action variable en fonction du débit d'un fluide
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(ru)
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Гидравлический датчик угловой скорости
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Improvements in fluid flow control valves
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