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Ejector inlet capacities range from 20 CFM to 20,000 CFM (35 CMH to 34,000 CMH) or more at vacuum, and pressures as low as 0.001 mm Hg absolute can easily be accommodated. Ejectors can be manufactured in a variety of materials and require no moving parts, translating into trouble-free continuous ejector operation.
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* Two-stage COAX® cartridge - MICRO - probably the world's smallest multistage vacuum ejector.
* Vacuum level to 83 -kPa at extremly low feed pressure.
* High operational reliability in case of fluctuating or low compressed-air pressure.
* The low weight makes it suitable to integrate close to the suction point in high speed pick-and-place applications of small objects.
* Suitable for handling sealed objects.
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Multi-stage ejector
PIAB vacuum pumps are of the multi-stage ejector type – a technology patented by PIAB in 1973.
These vacuum pumps were developed to provide extra vacuum flow in combination with deep maximum vacuum levels while keeping energy consumption at a minimum.
PIAB pumps have no moving parts that vibrate or wear out – important features that contribute heavily to outstanding operational reliability and a pleasant, noise-free working environment.
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Multistage Steam Ejector Condenser Sets
Multistage ejectors are used in processes such as degassing, desalination, fractionating and distillation to evacuate a system and maintain the level of vacuum required. Applications are not limited to steam, we also offer water, gas and air operated ejectors for a wide variety of process applications.
Ejectors and condensers have no moving parts and so by nature are simple, reliable, inexpensive and have a long lifetime with low maintenance costs. They work as a vacuum pump or compressor by transferring some of the energy from motive steam to entrain air, gas or vapor to eject at a higher delivery pressure.
Multi-stage systems may incorporate a Edwards liquid ring pump as the final stage before discharge to atmosphere.
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• Steam jet vacuum pumps and steam jet compressors are the most widely used types of jet pumps. The driving medium is water steam (saturated
or superheated).
• The driving steam travels through the driving nozzle, which has a Laval-shaped contour to generate supersonic speed by converting the steam pressure to kinetic energy and the corresponding low pressure at the outlet.
• At this part of the pump any kind of vapour or gas is entrained, intensively
mixed with the driving medium and accelerated in the mixing nozzle. The velocity of the mixed flow is firstly reduced by a shockwave and further on in the outlet cone after the throat of the mixing nozzle to the required counterpressure and the kinetic energy is reconverted to pressure energy.
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Steam jet vacuum pumps are pumps without movable parts. The functional principle is described in sheet Design and principle of operation of jet pumps.
Steam jet air pumps are used for plants of rectification, evaporation, drying, sublimation, degassing, condensation, deodorisation and polymerization.
In similarity with steam jet vacuum pumps it is valid for steam jet air pumps that the reachable ratio of compression from the counterpressure to the suction pressure is limited. Therefore it is necessary at the suction from higher vacuum that the total compression ratio from the suction to the atmospheric pressure is splitted up to several steam ejectors. The number of stages is dependent on the driving steam pressure and the suction pressure.
The direct close to one another connection of several steam ejectors involves a high consumption of steam because each following stage has to suck and to compress the driving steam of the stage before. By interconnection of condensers the driving steam is condensed as far as possible.
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Electric and Compressed Air Powered Vacuum Pumps, Vacuum Generators and Vacuum Stations, Vacuum Valves and Switches, Vacuum Filters and Exhaust Mufflers, Air Movers and Transfer Tubes, and a wide range of Vacuum System Accessories, all available at competitive prices.
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Theis is most significant model base on the multi stage principle Low compressed air are required far massive evacuation volumes at high vacuum flow and high vacuum level rate. V-tec air saving kit is available in this pump in order to maximum reduce the energy usage. VITON & EPDM seals can be also stipulated as option.
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The Kavac series of vacuum products includes a wide variety of conventional vacuum components, as well as more specialised items such as variable vacuum pumps, material transfer and air amplification units. KV's vacuum division is also able to deliver customer-specific vacuum solutions; often developing customised pumps or completely integrated vacuum control systems. A comprehensive range of vacuum cups complements the Kavac range.
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* Large vacuum flows
* Short evacuation time
* Good for handling porous materials or if leakage is present
* Energy-Saving (ES) available
* Available with connection plate in aluminium (AD) and composite PPS (D).
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