High Vacuum

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MDC High Vacuum Research Chamber 2 Way Rotatable 275CFF Varian Huntington
$65.00
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Huntington High Vacuum Research Chamber 2 Way Rotatable 275CFF MDC Varian
$65.00
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SMC XYA 50 M9NA KF NW50 Air Pneumatic Stainless Steel High Vacuum In Line Valve
$199.99
quality
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Leybold Trivac D10E Dual Stage Oil Sealed Rotary Vane High Vacuum Pump 2
$299.99
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High Vacuum Apparatus 111 6000ASA Industrial 3 76mm OD Straight Pipe Fitting
$299.99
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Leybold High Vacuum Inline Billows KF40 Valve Penumatic Varian Pheiffer
$200.00
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DuPont Krytox AT High Vacuum Grease Lubricant 2oz 57g Tube NEW
$36.00
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Alcatel 2460 Comptech Sputter Tool High Vacuum Chamber
$3,350.00
quality
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High Vacuum SS 45 Degree Elbow ISO 80
$99.00
quality
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High Vacuum Straight Pipe with 45 Degree End ISO 80
$99.00
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Nor Cal High Vacuum Pneumatic Right Angle Poppet Valve ISO 80
$119.00
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3 Long SS High Vacuum Bellows Flex Pipe ISO 80
$99.00
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High Vacuum 12ASA Flange 90 Degree Bowed Elbow Pipe Tricon Zeyon
$395.00
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Nor Cal High Vacuum Pneumatic Right Angle Poppet Valve ASA 525 OD
$119.00
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High Vacuum 8ASA Flang Bellows 90 Degree Elbow Pipe Tricon Zeyon
$395.00
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Varian High Vacuum CF Conflat Feedthrough Flange 6 OD
$149.00
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275 SS High Vacuum Ceramic Electrical Feedthrough Flange
$149.00
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275 SS High Vacuum KF25 Adapter Flange Fitting
$89.00
quality
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Welch Vacuum Pump 7 DirecTorr 8920A DIRECT DRIVE HIGH VACUUM LARGE
$1,099.99
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19 Long High Vacuum SS Bellows Flex Pipe ISO 63
$79.00
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7 Long High Vacuum ASA Straight Pipe 525 OD
$89.00
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High Vacuum ASA 90 Degree Elbow w Port 525 OD 1
$89.00
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High Vacuum ASA 90 Degree Elbow w Port 525 OD 2
$89.00
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NEW 10 3 4 OD HIGH VACUUM COPPER GASKET 10 ID
$15.00
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high vacuum chamber
$1.00
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High Vacuum Manual Flow Control Damper Butterfly Valve Aluminum Construction
$49.99
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SMC XLD 25 F9NA HIGH VACUUM VALVE W TWO D F9N SWITCHES
$399.99
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Mitsubishi VP SW A910 Scroll High Vacuum pump Tested with 14 day DOA warranty
$1,950.00
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Welch 7 W Series Model 8917A High Vacuum Pump 1 2 HP
$299.99
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AN High Vacuum Research Chamber 8CFF Flange Reducer to 275 CFFFlange Nor Cal
$225.00
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MDC Vacuum High Temp Linear Motion Feedthrough HTBLM 133 2
$450.00
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Varian High Vacuum Research Chamber 6ASA Reducer 10 Flange MDC Huntington
$395.00
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MDC High Vacuum Research Chamber 8 CFF Blank Flange Varian Huntington Nor Cal
$85.00
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Welch 8917A High Performance Vacuum Pump Two Stage New Never Used
$2,450.00
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High Vacuum Research Chamber 8 CFF Blank Flange Huntington MDC Nor Cal Varian
$80.00
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High Vacuum Research Chamber 6ASA Elbow Varian Pfeiffer
$195.00
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High Vacuum Research Chamber 8 Reducer Flange 3 3 16ID Huntington Varian MDC
$95.00
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MDC Vacuum High Temp Linear Motion Feedthrough HTBLM 133 1 1 travel
$350.00
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Varian DS 602 949 9335 1460 1740RPM 1 PH Dual Stage Rotary Vane High Vacuum Pump
$1,299.99
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Varian Model 921 0015 High Voltage Vacuum Ion Pump Control Unit
$74.99
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Varian VacIon 921 0015 High Voltage Vacuum Ion Pump Control Unit Controller 2
$199.99
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HVA High Vacuum Apparatus 21211 0609R 126S3 Stainless 6 Pneumatic Gate Valve
$669.99
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Alcatel ATH 30 C Turbomolecular Turbo Drag High Vacuum Turbo Pump 31 l s
$349.99
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Leybold Trivac D10E Dual Stage Oil Sealed Rotary Vane High Vacuum Pump 3
$349.99
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Leybold Trivac D10E Dual Stage Oil Sealed Rotary Vane High Vacuum Pump
$349.99
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Alcatel Annecy MDP 5010 75l s Turbo Molecular Drag Pump High Vacuum 27000RPM
$799.99
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Leybold Heraeus RGD 210 KF25 1OD Pneumatic High Vacuum Valve Cylinder Assembly
$122.99
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HVA 6ID 11OD Flange Stainless Steel Gate Valve Housing High Vacuum Apparatus
$76.99
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NUTONE ELECTRAVALUE 77 5595 V3A HIGH VOLTAGE WALL OUTLET ALMOND CENTRAL VACUUM
$16.95
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AN Corporation 1539 S N high vacuum pneumatic valve
$125.00
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USED MDC HIGH VACUUM FITTING STAINLESS STEEL TUBE NIPPLE 4TUBE FLANGE 821001
$39.99
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425 Long MKS High Vacuum Straight Pipe w 2 Ports ISO 80
$89.00
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High Vacuum ASA 90 Degree Right Angle 6 to 525 OD
$99.00
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Copper High Vacuum ASA Hose Flange 6 OD
$99.00
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MDS Sciex Qstar Mass Spectrometer High Vacuum Flange Component
$169.00
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MDC High Vacuum Chamber 125 CFF Flange Gate Valve Penumatic Varian Edwards
$475.00
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MDS Sciex Qstar Mass Spectrometer High Vacuum Flange Component
$129.00
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High Vacuum ASA Bellows Flex Pipe w Port 525 OD
$99.00
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M BRAUN MB EPV 40 High Vacuum Electro Pneumatic Valve Used Must See
$199.99
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HVA HIGH VACUUM APPARATUS 11212 9251 6 PNEUMATIC VALVE
$200.00
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175 Long High Vacuum Straight Pipe w 3 Ports KF70 mm
$99.00
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MKS High Vacuum KF50 90 Degree Elbow w Port
$79.00
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NEW KURT J LESKER FEEDTHROUGH STAINLESS STEEL MINIATURE HIGH VOLTAGE NPT
$66.99
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VAT High Vacuum ASA Gate Valve 1375 OD
$2,299.00
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Varian 3125 Vacuum Coating System High Voltage Electron Beam E Gun
$1,200.00
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Edwards High Vacuum Pump EDM20A Motor Franklin Electric 3 4 HP
$349.00
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NEW MPF VACUUM A7737 1 HIGH POWER FEEDTHROUGH STAINLESS STEEL
$422.99
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High Vacuum KF40 KF25 SS Machined Chamber Fitting Hose Assembly
$149.00
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Tuthill Kinney High Vacuum pump AO Smith AC Motor 115V 1 2HP 906241 2 KC 8
$189.00
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Edwards Speedivac High Vacuum Pump ID200 ID 200 With 220v Motor
$400.00
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7 Ultra High Vacuum Butterfly Valve 12 OD Flange Manual Very Good Cond ++
$399.00
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ISO LF ST ST Large Flange Size NW80 to NW100 Reducer High Vacuum Pump Fitting
$83.30
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MFG Unknown KF40EL90A ST ST ISO NW40 90 Degree Elbow High Vacuum Pump Fitting
$38.25
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Dayton High Efficiency Motor 5hp 3 Phase 37Kw 3450 rpm LTDH23TCE Pump
$332.49
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Bell Jar Vacuum Chamber 20 ID x 28 high
$1,000.00
quality
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NEW KURT J LESKER MHT QF C06 FLEXIBLE BELLOW SST KF 40 NW40 HIGH VACUUM 6
$127.99
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NEW KURT J LESKER MHT QF C18 KF 40 NW40 FLEXIBLE BELLOW 18 LENGTH HIGH VACUUM
$164.99
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Varian Glass Tube High Vacuum Flange Statinless Steel 1 3 8 OD
$39.39
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Robinair 15500 5 CFM High Performance Vacumaster Vacuum Pump New
$185.00
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Nor Cal 2FC ISO 400 5 ST ST High Vacuum Pump Flex Coupling ISO 100 OAL 500
$250.75
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Nor Cal High Vacuum Pump Fittings Accessories Kit
$106.25
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Nor Cal 2E ISO 100 OF ST ST 90 Degree Elbow High Vacuum Pump Fitting
$224.40
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SMC Pneumatic ZSE40 C4 22L High Precision Digital Adjustable Vacuum Switch
$89.99
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ISO NW40 to ASA 10 ST ST Adapter High Vacuum Pump Fitting w out O Ring Groove
$51.00
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High Current 400 Amp High Vacuum Electrical Feedthrough Comes with Warranty
$175.00
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Pfeiffer Turbo Molecular High Vacuum Pump TPU 100
$1,639.99
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Edwards High Vacuum P N D37207800 Electronics Module QDP QMB Spare
$895.00
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KEY High Vacuum Products Model BA 50 Brass Valve
$65.97
quality

High Vacuum

Uses Of Vacuum Chambers And Pumps

 

A vacuum chamber is a rigid enclosure from which air and other gases are removed by a vacuum pump. The vacuum, or low pressure zone, is created to allow technicians to conduct tests on substances or devices that are required to function in a vacuum. Chambers made of aluminum allow one to control the magnetic field inside from outside the vacuum. Conversely, chambers made of mu-metal prevent external fields from entering the vacuum.

Vacuum chambers are necessary to impede the contamination of samples in varied range of applications in spectroscopy and for film depositions. These ultra high vacuum applications are frequently utilized in semi-conductor manufacturing processes, because even the slightest degree of contamination can be disastrous in this industry. As referenced previously, vacuum chambers produce an environment that is conducive to testing devices that must operate in the vacuum that exists in outer space. Many vacuum chambers are constructed of aluminum, because aluminum, unlike other metals, is not magnetic.

Vacuum chambers are frequently constructed with multiple ports, covered with flanges, to allow instruments or windows to be installed in the walls of the chamber. For processes that only need low to medium levels of vacuum, rubber o-ring seals are utilized. In applications where very high vacuum levels are used, the flanges are made out of hardened steel which are sealed onto copper gaskets.

A type of vacuum chamber frequently used in the field of spacecraft engineering is a thermal vacuum chamber,, which provides a thermal environment representing what a spacecraft would experience in space. These applications also utilize very advanced   vacuum pumps

Vacuum chambers are frequently used when mixing resins and silicone rubbers. A vacuum chamber is needed when manufacturing resins and silicone rubber to insure that the mold is free of air bubbles. In order to prevent air bubbles, material are placed in a vacuum chamber while they set. The substrate upon which the vacuum is applied is mixed according to the manufacturers specifications. Because the material placed in the vacuum will expand to four times its original volume,the mixing container must be large enough to hold a volume of four times the amount of the original material that is being vacuumed to allow for the expansion. If additional volume is not provided, there will not be enough space available to allow the process to reach completion. The container in which the material is held is put into a vacuum chamber and the vacuum is applied when the vacuum pump is turned on. Subsequent to the vacuum attaining 982 mbar, the substrate will commence rising. . When the material falls it will plateau and not rise any more. The vacuuming is continued for another three minutes to make certain all of the air has been removed from the material. After this interval is attained, the vacuum is terminated and the pressure is allowed to equalize with the ambient pressure. At this point the vacuum chamber is opened and the substrate is removed and put into a mold.

Vacuum chambers utilized in the semi-conductor industry involve an exceedingly complex process. Due the very high levels of air purity required to avoid contamination of semi-conductor devices, these devices must be processed in ultra pure vacuums. With the progression of silicon based semi-conductor devices, the need for ultra high vacuum levels have increased to eliminate the possibility of any type of substrate contamination. For this reason, the most advanced ultra high vacuum chambers and pumps are used in space research and semi-conductor manufacturing. For semi-conductor manufacturing applications, impurities of even several molecules can destroy a substrated.

 

High Vacuum
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