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Welch Direct-Drive Vacuum Pumps
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Products:
GEM 8890
Rugged direct drive rotary gear pump.
Ideal for rotary evaporation and filtration manifolds.
CFM 1.1,
Ultimate pressure 1 x 10 -1 torr,
Motor 1/4 HP 115V standard or optional 230V,
Oil Capacity 2.25 Quart,
Intake 3/8" hose barb / exhaust 3/4-20 threaded,
Weight Net 26 lbs.
OUT OF PRODUCTION
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Direct 8905
Direct drive rotary vane pump.
CFM 1.8,
Ultimate pressure 2 x 10 -3 torr,
Motor 1/4 HP 115V standard or optional 230V,
Oil Capacity .42 Quart,
Intake 3/16" unibarb / exhaust 3/4-20 threaded,
Weight Net 24.5 lbs.
OUT OF PRODUCTION
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Direct 8907
Direct drive rotary vane pump.
CFM 2.6,
Ultimate pressure 1 x 10 -4 torr,
Motor 1/2 HP 115V standard or optional 230V,
Oil Capacity 1 Quart,
Intake 13/16" unibarb / exhaust 1-20 threaded,
Weight Net 40 lbs.
OUT OF PRODUCTION
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Direct 8912
Direct drive rotary vane pump.
CFM 2.8,
Ultimate pressure 1 x 10 -4 torr,
Motor 1/2 HP 115V standard or optional 230V,
Oil Capacity .99 Quart,
Intake 13/16" unibarb / exhaust 1-20 threaded,
Weight Net 41 lbs.
OUT OF PRODUCTION
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Direct 8917
Direct drive rotary vane pump.
CFM 6.1,
Ultimate pressure 1 x 10 -4 torr,
Motor 1/2 HP 115V standard or optional 230V,
Oil Capacity .8 Quart,
Intake 3/16" unibarb / exhaust 1-20 threaded,
Weight Net 48 lbs.
OUT OF PRODUCTION
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Direct 8920
Direct drive rotary vane pump.
CFM 7.7,
Ultimate pressure 3 x 10 -4 torr,
Motor 1/2 HP 115V standard or optional 230V,
Oil Capacity 1.3 Quart,
Intake 3/16" unibarb / exhaust 1-20 threaded,
Weight Net 58 lbs.
OUT OF PRODUCTION
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Direct 8925
Direct drive rotary vane pump.
CFM 11.3,
Ultimate pressure 4 x 10 -4 torr,
Motor 3/4 HP 115V
Oil Capacity 1.2 Quart,
Intake 3/16" unibarb / exhaust 1-20 threaded,
Weight Net 77 lbs.
OUT OF PRODUCTION
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