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* Integrated vacuum pump, Air supply/vacuum release control valve, vacuum switch/filter, blowing control valve and silencer in a body.
* Available of individual control
* Automatic vacuum filter cleaning system
* Built in check valve
* Compact size(10mm) and light weight
* Long life time and low noise level
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Extremely low compressed air consumption
High volumetric yield with capacities from 15 to 660 m3/h
Maximum vacuum level 700 mmHg (90% vacuum)
Extremely silent
Virtually maintenance free
The compactness and limited weight mean that these pumps can be fitted directly on the arm of an articulated robot
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Thanks to their weak weight (from 7 to 13 G according to versions') and their reduced dimensions, the ejectors “just plug it in” LASH are easy to integrate in a network of compressed air into nearest to the suction cups, even in the most inaccessible places of the machines. Utilisation COVAL advises the use of the ejectors in line LASH for the handling of electronic components and light parts, the feeding systems, the applications of “Pick and Place” and the systems of separation for the machining of sheet or the plastic. Advantages simple and effective Connection Rapid couplings, connections with nozzle, male threading M12 or male M14. Increased reliability No machine element moving. Silence of operation Combination tube-mixer exit of fluidic news COVAL.Performances optimized. The LASH are available in 3 diameters of tube (0,5 0,7 and 0,9 mm) and 2 levels of vacuum (60% and 90%).
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Exploits the Venturi tube principle
They are very compact and normally located near to the point of use
Very fast vacuum generation
Special versions with expulsion lung to facilitate release from the suckers
Capacity from 1 to 8 m3/h
Maximum vacuum level 650 mmHg (85% vacuum)
Maintenance free
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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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