Product Gallery Welch 8890A GEM Direct Drive Gear Pump

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Welch 8890A GEM Direct Drive Gear Pump

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The Welch 8890A Direct Drive vacuum pump is a robust vacuum pump for applications requiring pressures < 50 Torr. The 8890A achieves < 0.050 Torr with a pumping speed of 31 liters/min (1.1CFM).   

                                                                                                                                                                                                                                                                                                                                                 These Welch small direct drive, oil sealed vacuum pumps should not be operated continuously at pressures above 50 Torr. Operating this vacuum pump at higher pressure will induce excessive oil spraying from the exhaust of the vacuum pump causing premature failure and void warranty. Please consult your Chemtech Scientific Representative for consultation, should the ultimate pressure of your process run above 50 Torr.

What's included Exhaust Filter and 1 qt vacuum oil
Common accessory, not included Vacuum Hose
Pumping Speed 1.1 CM (31 lit/min.)
Max. Vacuum 0.050 Torr
Oil Capacity 0.48 qts.
Tubing Needed 3/8" ID
Inlet Connection Barb 1/4" NPT
Intake / Exhaust threads 3/4-20
Pump RPM @ 60 hz 3450
Dimensions LxWxH 14.5x5.1x8.4
Weight 24.5 LBS
Wiring Wired for 115v, 60 Hz, 1 ph with N. American 115v Plug

The Welch 8890A Direct Drive vacuum pump is a robust vacuum pump for applications requiring pressures < 50 Torr. The 8890A achieves < 0.050 Torr with a pumping speed of 31 liters/min (1.1CFM).   

                                                                                                                                                                                                                                                                                                                                                 These Welch small direct drive, oil sealed vacuum pumps should not be operated continuously at pressures above 50 Torr. Operating this vacuum pump at higher pressure will induce excessive oil spraying from the exhaust of the vacuum pump causing premature failure and void warranty. Please consult your Chemtech Scientific Representative for consultation, should the ultimate pressure of your process run above 50 Torr.

What's included Exhaust Filter and 1 qt vacuum oil
Common accessory, not included Vacuum Hose
Pumping Speed 1.1 CM (31 lit/min.)
Max. Vacuum 0.050 Torr
Oil Capacity 0.48 qts.
Tubing Needed 3/8" ID
Inlet Connection Barb 1/4" NPT
Intake / Exhaust threads 3/4-20
Pump RPM @ 60 hz 3450
Dimensions LxWxH 14.5x5.1x8.4
Weight 24.5 LBS
Wiring Wired for 115v, 60 Hz, 1 ph with N. American 115v Plug

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