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Products >>
Centrifugal Pumps/Displacement Pumps, Vacuum Pump, Diaphragm pump, Submersible Pumps
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Description |
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Vacuum Pumps: Used Nash TC-5 two stage carbon steel vacuum pump
Used Nash TC-5 two-stage carbon steel vacuum pump. Test # 85U2101. 1170 RPM. 3" inlet and outlet. Driven by 25 HP
Item No. MTF02029-0012 |
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Vacuum Pumps: Used Roots RD-2500 Vacuum Pump
Used Roots RD-2500 Vacuum pump. Design Data: 2500 cubic meters per hour, allowable differential pressure 5.3 kPa, Ultimate pressure 7 X 10-2, Volume flow rate of standard backing pump 450 to 600 cubic meters per hour,
Item No. MTF02073-0007 |
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Vacuum Pumps: Used ULVAC 024-CM Mechanical Booster pump
Used ULVAC 024-CM Mechanical Booster pump. Oil free design allows stable performance even when evacuating water or solvent vapors. Exhaust port may be directed either vertically or horizontally.
Item No. MTF02073-0014 |
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Vacuum Pumps: Used ULVAC D-950K Oil Rotary type vacuum pump
Used ULVAC D-950DK Oil Rotary type vacuum pump. Unit has springless vanes. Easy maintenance with the all aluminum design body pump. Coated with Tufram for abrasion and corrosion resistance.
Item No. MTF02073-0008 |
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Vacuum Pumps:Used ULVAC Vacuum Pump model PKS-070 Oil Rotary Pump
Used ULVAC PKS-070 Oil Rotary type vacuum pump. Large extremely solid unit with stable evacuation characteristics. Built from high-grade cast metal that offers excellent abrasion and corrosion resistance.
Item No. MTF02073-0006 |
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Vacuum Pumps: Used ULVAC Vacuum Pump 024-CM Booster Pump
Used ULVAC 024-CM Mechanical Booster pump. Oil free design allows stable performance even when evacuating water or solvent vapors. Exhaust port may be directed either vertically or horizontally. May be ran simultaneously with roughing pumps.
Item No. MTF02073-0020 |
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Vacuum Pumps: Used ULVAC Vacuum Pump model PMB-060B Mechanical Booster Pump
Used ULVAC PMB-060B Mechanical Booster pump. Oil free design allows stable performance even when evacuating water or solvent vapors. Exhaust port may be directed either vertically or horizontally.
Item No. MTF02073-0013 |
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Vacuum Pumps: Used Stokes Pennwalt Microvac Model 146H-13 vacuum pump carbon steel
Used-Stokes Pennwalt Microvac Model 146H-13 vacuum pump. Carbon steel construction. Rated 30 CFM. Powered by 1.5HP 3/60/208-230/460 volt, 1725 RPM motor.
Item No. MTF02064-0004 |
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Vacuum Pumps: Used Stokes Pennwalt Microvac Model 146H-13 vacuum pump carbon steel
Used-Stokes Pennwalt Microvac Model 146H-13 vacuum pump. Carbon steel construction. Rated 30 CFM. Powered by 1.5HP 3/60/208-230/460 volt, 1725 RPM motor.
Item No. MTF02064-0005 |
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Vacuum Pumps: Used Stokes Pennwalt Microvac, vacuum pump, Model 212-11 carbon steel
Used-Stokes Pennwalt Microvac rotary piston vacuum pump, model 212-11, carbon steel. Approximately 40 cfm. 3: inlet, 2" outlet.
Item No. MTF02064-0002 |
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Vacuum Pumps: Used-Stokes Pennwalt Microvac vacuum pump, Model 212-11 carbon steel
Used-Stokes Pennwalt Microvac rotary piston vacuum pump, model 212-11, carbon steel. Approximately 40 cfm. 3: inlet, 2" outlet.
Item No. MTF02064-0003 |
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Vacuum Pumps: Used-Nash Model SC-2, carbon steel vacuum pump
Used-Nash Model SC-2 approximately 76 CFM 4-position vacuum pump. Carbon steel construction. Test# 8900784. 1750 RPM. Driven thru a High Efficiency 10HP 3/60/ 230-460 Volt motor.
Item No. MTF02064-0001 |
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Vacuum Pump: Busch Huckepack 117CFM Vacuum Pump
Used Busch Huckepack dry running vacuum pump. Model 433014, type HC4330, SN# 1372.
Item No. MTF02002-0491 |
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Vacuum Pump: Used Busch AC0800 Vacuum Pump U-12
Used Busch vacuum pump system, The water-cooled AC0800, vacuum pump is driven by a 40 HP, 230/460 volt, 3 phase, 60 hertz, 3560-RPM motor.
Item No. MTF02002-0021 |
A vacuum pump is a device that removes gas molecules from a sealed volume in order to leave behind a partial vacuum. The vacuum pump was invented in 1650 by Otto von Guericke.
Pumps can be broadly categorized according to three techniques:[1]
* Positive displacement pumps use a mechanism to repeatedly expand a cavity, allow gases to flow in from the chamber, seal off the cavity, and exhaust it to the atmosphere.
* Momentum transfer pumps, also called molecular pumps, use high speed jets of dense fluid or high speed rotating blades to knock gaseous molecules out of the chamber.
* Entrapment pumps capture gases in a solid or absorbed state. This includes cryopumps, getters, and ion pumps.
Positive displacement pumps are the most effective for low vacuums. Momentum transfer pumps in conjunction with one or two positive displacement pumps are the most common configuration used to achieve high vacuums. In this configuration the positive displacement pump serves two purposes. First it obtains a rough vacuum in the vessel being evacuated before the momentum transfer pump can be used to obtain the high vacuum, as momentum transfer pumps cannot start pumping at atmospheric pressures. Second the positive displacement pump backs up the momentum transfer pump by evacuating to low vacuum the accumulation of displaced molecules in the high vacuum pump. Entrapment pumps can be added to reach ultrahigh vacuums, but they require periodic regeneration of the surfaces that trap air molecules or ions. Due to this requirement their available operational time can be unacceptably short in low and high vacuums, thus limiting their use to ultrahigh vacuums. Pumps also differ in details like manufacturing tolerances, sealing material, pressure, flow, admission or no admission of oil vapor, service intervals, reliability, tolerance to dust, tolerance to chemicals, tolerance to liquids and vibration.
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