Vacuum is an integral part of many laboratory processes, but costs associated with generating a vacuum, such as process costs, user costs and cost to the environment, have never really been considered seriously. Although technology has advanced to provide smaller, cleaner and quieter options, not many people are taking advantage of it. Vacuum pumps last a long time and many people go through their careers without actually buying one. Hence, people tend to replace their vacuum pumps with what they have used before and not take the time to find out about the alternatives.
Vacuum pumps used in laboratories can be classified into two main types rotary vane pumps, sometimes referred to as oillubricated pumps, and dry (oil-free) pumps. They operate in different ways to create vacuum and aspirate fluids. Centrifugal pumps use centrifugal force to push the fluid through an outlet; metering pumps, such as diaphragm, peristaltic, piston and syringe pumps, pull fluid into a chamber and then push it through the outlet valve; while positive displacement pumps use bellows, piston, rotary lobe and rotary vane to push fluid through a cavity, leaving a vacuum that pulls in more fluid.
Oil-lubricated pumps have been around for many decades, while the oil-free diaphragm pumps are a more recent addition. Although oil-free pumps tend to be one and a half to two times more expensive than oil pumps, there are a lot of advantages to their use as well as significant lifetime savings. First of all, no oil is used, and therefore there is no cause for oil contamination and no necessity for oil change or disposal. Oil-free pumps can be built to be corrosion resistant and hence do not require regular maintenance. Service intervals on better oil-free pumps exceed 10,000 operating hours. If you use your vacuum pump 20 hours a week, 50 weeks a year, that's 10 years before the first scheduled service!
The other misunderstanding that leads to the choice of an oillubricated pump is that people think that more vacuum is always better. Oil-free diaphragm vacuum pumps can provide vacuum levels from atmosphere to below 0.5 mbar/torr, whereas oil-lubricated pumps offer high capacities and higher vacuum levels up to 10-3 mbar/torr. What is more important is matching the vacuum to the application, and almost any application can now be performed using an oil-free pump, with the exception of freezedrying.
For certain applications he also recommends considering buying a pump with controls that provide a good balance of speed and control. Even manual controls are better than none, but electronic controls offer huge productivity advantages, he says. In many applications, the type of vacuum control used will determine how much scientist time is needed for oversight and how fast the application proceeds.
It is often very helpful to talk to someone from a vacuum pump company, who can recommend a pump and offer a demonstration about what will be right for your application and budget. There are also interactive online vacuum pump selection guides available that ask a few questions about the planned use for the pump and recommend a series of pumps to satisfy a range of budgets. It is not a glamorous technology but it is one that can affect the costs, comfort and convenience of your laboratory.
Sale Vacuum Pumps, Vacuum Pumps for sale, used Vacuum Pumps, surplus Vacuum Pumps,adixen vacuum pumps,alcatel vacuum pumps,leybold vacuum pumps,oerlikon vacuum pumps,boc edwards vacuum pumps,kinney vacuum pumps,pfeiffer vacuum pumps, welch vacuum pumps,Sale adixen vacuum pumps,Sale alcatel vacuum pumps,Sale leybold vacuum pumps,Sale oerlikon vacuum pumps,Sale boc edwards vacuum pumps,Sale kinney vacuum pumps,Sale pfeiffer vacuum pumps,Sale welch vacuum pumps Vacuum pumps and solutions:OIL FREE VACUUM PUMPS:Dry Scroll Pumps: Refurbished Scroll Pumps from Anest Iwata, BOC Edwards and Varian: Anest Iwata ISP Series ISP250B, ISP500B DVSL Series DVSL100B, DVSL500B BOC Edwards XDS Series XDS5/5C, XDS10/10C, XDS35i ESDP Series ESDP12-30 GVSP Series XDD1 Varian SH100, PTS0300X, PTS0600X
Service & Repair of turbo vacuum pumps and controllers including:Bearing changes, Regreasing, Cleaning, Repair and Balancing.
Vacuum Pump Sales & Service for Alcatel Adixen,Pfeiffer,Balzers,Oerlikon Leybold,Varian,Rigaku,Boc Edwards,Seiko Seiki,Balzers.
Standard major repair includes complete disassembly,decontamination,chemical clean, inspection of all components,bake out all parts prior to assembly,install major kit (bearings,hardware,seals),leak check,dynamic balancing and integrity test for 24 hours to
insure operational specifications are met.Any damage to the rotor,discs,shaft,motor or other major parts not covered inthe major rebuild will need customer approval before work is done.
- We combine state of the art balancing and FFT diagnostic equipment, 25 years in repairing machinery, and 15 years of applied high vacuum techniques to ensure proper repair of your turbomolecular pump.
- Highest quality replacement parts, such as permanently lubricated ceramic bearings, are used in all repairs.
- Most repairs are completed within 15 days. Emergency repair service with a 3-5 day turnaround is available.
- Repairs are competitively priced. Discounts for universities are available.
A pump which removes gas molecules from an enclosed volume so that a partial vacuum is left behind is known as a vacuum pump. It was invented by Otto von Guericke in 1650. Pumps can be classified into three types according to the technology used. These three types are the Positive displacement pump, Momentum transfer pump and the Entrapment pump.
Momentum Transfer Pumps, which are also known as molecular pumps, use high speed jets of thick fluid or high speed rotating blades to propel the molecules in gaseous state out of the chamber. Entrapment pumps trap gases in a solid state. Positive displacement pumps are most efficient for vacuums that are low.
The kinetic pumps apply momentum to the gas so that mechanics of the moving parts of the machine make the gas transfer from the inlet area to the outlet area of the pump. When the moving part is in motion, the gas molecules are accelerated and moves towards the area where there is low pressure.
When this process is continuously repeated, the molecules are pushed out from the container. This is done to create vacuum. When the required vacuum level is reached at, the tank is isolated using a high vacuum valve. This dis-allows the gases between container and pump to exchange.
A large variety of vacuum pumps are combined with chambers or containers of different types and using different procedures resulting into a very wide range of vacuum pumps. A positive displacement pump can be used to create a partial vacuum by transferring gas molecules from the container to outlet. But this may not be the perfect kind of vacuum created. Other techniques can be used to achieve such a vacuum. The combination of chamber and procedure to create a vacuum will depend on what type of f vacuum needs to be created.
It is extremely difficult to achieve the perfect vacuum. Sometimes more than one pump type is used for a single operation. The combinations of pump types used depends upon the quality of vacuum desired. In spite of a lot of advancement pump technology has its limitations. Therefore the quality of the vacuum achieved is fairly crude. Quality can be improved by subjecting the container to a process of extreme drying. This should be done before vacuum pumping it.
Extremely high vacuums can be generated through custom built equipment made of stainless steel. A vacuum pump can be available in wide varieties and forms. The utility of such pumps is extremely high.
Turbomolecular vacuum pump repair, sales and service.
Turbo vacuum pumps we repair:
Alcatel: 5080, 5100, 5150, 5400, 5900 ATP series:ATP 80,ATP 100,ATP 150,ATP 400,ATP 900 MDP series:MDP 5010,MDP 5011,MDP 5030
Balzers/Pfeiffer: TPH/U:TPH/U 040,TPH/U 050,TPH/U 060,TPH/U 062,TPH/U 100,TPH/U 110,TPH/U 170,TPH/U 180H,TPH/U 190,TPH/U 200,TPH/U 240,TPH/U 260,TPH/U 270,TPH/U 330,TPH/U 510,TPH/U 2200 TMU/H:TPH/U 064,TPH/U 065,TPH/U 071,TPH/U 261,TPH/U 521
Edwards: EXT70, EXT 250, EXT 351, EXT 501, EXT 501E
Leybold: Turbovac/TMP 50, TMP 150,TMP 151,TMP 360,TMP 361,TMP 450,TMP 1000,TMP 1500
Rigaku: RTPG 150, RTP 300
Varian:
Elettrorava V80, V80A, V200, V200A, V300, V450, V1000, V1000A,
MacroTorr series: V70, V250, V300HT, V550, V551, V700, V1000HT, SCIEX V801
We are looking for the following vacuum pumps;
Leybold TMP 361C & TMP 1000C ,Pfeiffer: TMH-1600 PC, TPH-1600C, TMH/U-1000/1001, TMH/U-520, TMH/U-521 TMH-261, TMH-071, TPH-060, TPH/U 510 TCP-380, TC-600 Controllers
-Varian: V-1000 ICE, V-1000A, V-550, V-551, V-70 LP. Varian Turbo Controllers
-Seiko Seiki: STP-600C, STP-1000C, STP-H1000C, STP-301C, STP-300C, STP-A1303C. SCU-301, SCU 21D Controllers
-Alcatel: ATP-80, ATP-150, ATP-400. ACT-600, ATP-900 HPC, ACT-1000 Controllers RSV-601B Blower, 2021 Vane pump.
-Leybold:LEYBOLD WAU 251 VACUUM BLOWERS ,TURBO PUMPS: Tmp 361c,TMP 1000 ,Mag 400 Turbo, NT-20 Controllers E-250 WA-251, WA-501, WA-2000 or WA-2001, Sogevac: SV-100, SV-200, SV-300
-Edwards EXT-70, 70H, 250, 250H, 255H Turbos E2M275 Vane Pump
-Turbo Pumps: any good deals on surplus turbo pumps or controllers. Vane Pumps: any 3-20 CFM Pumps with 115 volt, single phase motors
-Stokes V-017, V-023 Vane Pumps. 310, 615 Blowers
-CTI: 9600, 8200, 8500, 8510 Compressors, CT-8F OB Conflat, three phase motor controllers
-Leak Detectors: Alcatel ASM-180T, ASM-180 TD+, Varian 959 or 979 (or any non DP leak detector)
-Busch RC-40, 63, 160, 250
VACUUM PUMP BUYERS If you have any of the above, please email back the condition, availability and price.