Machinery & Equipment
Helium Gas Cryogenic Purifiers
- Types
- Cryogenic Adsorption Purifiers · Cryogenic Distillation Purifiers · Membrane Purifiers
- Applications
- Military Industry · Petrochemical · Medical Treatment
5 editions3 May 2026
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Circulator Pump is a pump designed to circulate a fluid through a closed system. A closed system is one which runs in a loop, with the pump discharge line eventually returning back to the pump suction, often without ever being exposed to atmospheric pressure. They are generally considered centrifugal pumps, although there are also a few types that use positive displacement technology.
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Automatic train control (ATC) is a general class of train protection systems for railways that involves a speed control mechanism in response to external inputs. An automatic train control (ATC) system integrates all the vital and non-vital functions that guarantee the safe operation of trains.
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