How to Select Vacuum Pumps and Vacuum Generators           Image Credit: Clark Solutions | Gast Group | Agilent Technologies, Inc.   Vacuum pumps and vacuum generators provide sub-atmospheric pressure for a variety of industrial and scientific applications. Vacuum pump technologies are used for industrial gripping and chucking, laboratory degassing, and purification in the fields of chemical and semiconductor processing. Vacuum...
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Q & A on Vacuum Pumps and Vacuum Generators

We asked our users for their input on Vacuum Pumps and Vacuum Generators. Here are the results of 108 users familiar with Vacuum Pumps and Vacuum Generators.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing vacuum pump and generator design?
13 answers
Answers:
Electronic technologies, printed circuit board controllers, and some of the new accessories they have come out with on the market.
~Mike Law, Facilities Manager, Sarasota, FL
Computational electronics, ceramic and piezoelectric materials, nanotechnology.
~Beer Sheva, Israel
Material science design of vacuum coating and sealing.
~Oleg Nerushev, Research & Development, Edinburgh, UK
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Q:
From your perspective, which companies are creating the most innovative vacuum pumps and generators?
18 answers
Answers:
I'm not updated with the ultimate technology. I don't need it. I work with many companies (Leybold, Varian, Alcatel, Edward, local companies) and innovation is not what I look for.
~Flavio Sives, Technical Support, La Plata, Argentina
Hard to say, I do not change the equipment very often. Pfeiffer, Varian(Agilent now?) for pumps, might be.
~Oleg Nerushev, Research & Development, Edinburgh, UK
Ritchie& Robinaire are coming out with new items all the time for the HVAC industry.
~Mike Law, Facilities Manager, Sarasota, FL
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Applications and UseTop

Q:
What are some of the applications you have used vacuum pumps and generators for?
30 answers
Answers:
Chemical & pharmaceutical processes, thin film coating, freeze drying, thermal metallizing, low temperature thermal desalination (LTTD)- evaporation of surface sea water under vacuum using ocean thermal energy, etc.
~Rajesh Malhotra, Engineering Consultant, New delhi, India
I sell the pump and solution for : - create vacuum for vacuum chamber in evaporation application. - create vacuum for biomedical - for web coating, 3D coating - food & brewery industry
~Steven Luu, Marketing/Sales, HCMC, Vietnam
Dehydration of a/c and refrigeration systems and lines. Dropping enclosed containers below atmospheric pressure.
~Mike Law, Facilities Manager, Sarasota, FL
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Q:
Please share with us any “non-standard” applications that vacuum pumps and generators have been used for.
8 answers
Answers:
- In steel molding, they create the sample for engine block by spongy, put it in a hole, then fill by sand, and plastic sheet on top cover. They use the vacuum to create the pressure as to fix the sand in to hardness (the sand will trap by tank and water, prevent it going in to vacuum pump). After, they fill the hot steel into, the hot steel will melt the spongy, when the hot steel melting all of spongy, they cool down, then engine block is made.
~Steven Luu, Marketing/Sales, HCMC, Vietnam
Coming up with longer lasting filaments for different types of light bulbs, also in determining and installing different gases used in light bulb construction.
~Mike Law, Facilities Manager, Sarasota, FL
There are many, but they are sparing, and not very often.
~Harshavardhan B, Promoter Director - Technology & Applications, Nasik, India
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Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of vacuum pumps and generators?
9 answers
Answers:
Most common mistake is usage of long pump connections and powerful(expensive) pumps, sometimes even collector line with few pumps after long bellows. Such solution increases price and maintenance expenses but does not improve ultimate pressure and pumping speed.
~Oleg Nerushev, Research & Development, Edinburgh, UK
-non scheduled checking or maintenance of the pumps. -be careful when cleaning the vacuum chamber after process, particle will easy damage the pumps, especially turbo. Particle also come from poor maintenance process when repairing the pump.
~Steven Luu, Marketing/Sales, HCMC, Vietnam
Yes. Rushing the pump or not reclaiming freon completely and sucking up oil or liquid freon and ruining the valves in the pump.
~Mike Law, Facilities Manager, Sarasota, FL
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FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
13 answers
Answers:
I would like a vacuum pump who offers me minimum vacuum for low price. Also, I have needed some vacuum pumps who requires less maintenance. Or if there is a vacuum pump which has a powerful chemical resistance, I´ll buy it!!!!
~Marisol B, Research & Development, Mexico, DF, Mexico
Stability to sudden pressure increase (broken glass connections, for example). Long life of tip sealing for scroll pumps.
~Oleg Nerushev, Research & Development, Edinburgh, UK
Working in any position for turbo pumps Using of 3 phases induction motor
~Engineering, Design, Rm. Valcea, Romania
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Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of vacuum pumps and generators?
9 answers
Answers:
Define if the vacuum level is absolute or relative Define if the capacity that is informed by the customer is open flow or is the at the operating vacuum level.
~Luis Otálora, Engineer, Bogotá, Colombia
-should have diagnostic the vacuum leak. -turbo pump is better than diffusion pumps due to running costs, clean and reliable
~Steven Luu, Marketing/Sales, HCMC, Vietnam
Be careful with the application. The inlet air may contain contaminants that must be removed prior to entering the pump.
~John Normandin, General Management, Bellingham, MA
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Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using vacuum pumps and generators?
8 answers
Answers:
Case to case basis. However in most cases the pumping speeds & ultimate vacuum required for the process are far exceeding the requirements, making systems expensive and over sized. There is general confusion between pumping speed and pressure.
~Rajesh Malhotra, Engineering Consultant, New delhi, India
-find solution to change the pump to our brand -changing to new technology (Ex : change diffusion to turbo pump) -contract service -maintenance
~Steven Luu, Marketing/Sales, HCMC, Vietnam
About buying, maintenance and spare parts accessibility. About using, that depend on the kind of use and the kind of vacuum system.
~Flavio Sives, Technical Support, La Plata, Argentina
Always ensure the pump is working by testing on smaller system prior to opening to a larger system, change the oil regularly.
~John B, Builder/Contractor, Toronto, Canada
Ask people in the field of which you'll be using the vacuum pump in.
~Mike Law, Facilities Manager, Sarasota, FL
Buy brands that have technical and commercial support.
~Luis Otálora, Engineer, Bogotá, Colombia
Select well, use well, maintain well.
~Harshavardhan B, Promoter Director - Technology & Applications, Nasik, India
You should know your needs
~Marisol B, Research & Development, Mexico, DF, Mexico


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