sealed pump

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• Vacuum pump — A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The vacuum pump was invented in 1650 by Otto von Guericke. Types Pumps can be broadly categorized according to three… …   Wikipedia

• Circulator pump — A circulator pump is a specific type of pump used to circulate gases, liquids, or slurries in a closed circuit. They are commonly found circulating water in a hydronic heating or cooling system. Because they only circulate liquid within a closed… …   Wikipedia

• Sorption pump — The sorption pump is a vacuum pump that creates a vacuum by adsorbing molecules on a very porous material like molecular sieve which is cooled by a cryogen, typically liquid nitrogen. The ultimate pressure is about 10 2 mbar. With special… …   Wikipedia

• Progressive cavity pump — A progressive cavity pump is also known as a progressing cavity pump, eccentric screw pump or even just cavity pump and, as is common in engineering generally, these pumps can often be referred to by using a genericized trademark. Hence names can …   Wikipedia

• Metering pump — A metering pump is a pump used to pump liquids at adjustable flow rates which are precise when averaged over time. Delivery of fluids in precise adjustable flow rates is sometimes called metering. The term metering pump is based on the… …   Wikipedia

• Sump pump — A sump pump is a pump used to remove water that has accumulated in a sump pit. A sump pit, commonly found in the home basement, is simply a hole to collect water. The water may enter via the perimeter drains of a basement waterproofing system,… …   Wikipedia

• Diaphragm pump — schematic. A diaphragm pump is a positive displacement pump that uses a combination of the reciprocating action of a rubber, thermoplastic or teflon diaphragm and suitable non return check valves to pump a fluid. Sometimes this type of pump is… …   Wikipedia

• Bicycle pump — A bicycle pump is a type of positive displacement pump specifically designed for inflating bicycle tires. It has a connection or adapter for use with one or both of the two most common types of valves used on bicycles, Schrader or Presta. A third …   Wikipedia

• Submersible pump — A submersible pump is a pump which has a hermetically sealed motor close coupled to the pump body. The whole assembly is submerged in the fluid to be pumped. The advantage of this type of pump is that it can provide a significant lifting force as …   Wikipedia

• Axial flow pump — An axial flow pump, or AFP, is a common type of water pump that essentially consists of a propeller in a tube. The propeller can be driven directly by a sealed motor in the tube or by a right angle drive shaft that pierces the tube.The main… …   Wikipedia

• vacuum pump — n. 1. a pump used to draw air or gas out of sealed space 2. PULSOMETER (sense 1) …   English World dictionary