Vacuum Pumps, Direct Drive High Vacuum Compact, Gem, Medium and Large

Overview

The Direct Drive High Vacuum Compact, Medium and Large vacuum pumps use a two stage rotary vane oil sealed technology. The Direct Drive High Vacuum Gem Model 8890 vacuum pump uses a two stage “rotating rotor within a rotor” or gerotor technology. These compact, portable pumps are recommended for many laboratory applications, including centrifugal concentrators, vacuum ovens, freeze dryers and transfer lines.

Built-in oil anti-suckback mechanism keeps the pump isolated from the rest of the vacuum system whenever the motor stops. A gas ballast valve inhibits vapors from condensing in the pump chamber in the compact, medium and large models.

Model:	cfm, L/min	Torr	mbar
Compact 8905	1.8, 51	2×10^-3	2.7×10^-3
Gem 8890	1.1, 31	1×10^-1	1.3×10^-1
Medium 8907	2.6, 73	1×10^-4	1.3×10^-4
Medium 8912	3.8, 108	1×10^-4	1.3×10^-4
Medium 8917	6.1, 173	1×10^-4	1.3×10^-4
Large 8920	7.7, 218	3×10^-4	4×10^-4
Large 8925	11.3, 320	4×10^-4	5.3×10^-4

Features of the Direct Drive High Vacuum Pumps:

Compact, lightweight and portable
Quiet operation
Thermal overload protection
Oil anti-suckback mechanisms to keep pump isolated from system when motor stops
Compact, Medium and Large Direct Drive models use rotary vane and have gas ballast valves to inhibit vapors from condensing in pump
GEM Direct Drive uses gerorator technology and has the advantage of not overheating when run continuously at any pressure

Specifications (Click here):

Vacuum Pumps, Direct Drive High Vacuum Compact, Gem, Medium and Large

Number	Description	Price $
8905A	Direct Drive Compact 8905 High Vacuum Pump, flow rate 1.8 cfm, 51 L/min, vacuum 2×10-3 Torr, 2.7×10-3 mbar, supplied with hose adapter and charge of vacuum pump oil, does not include exhaust filter	2,888.05
8890A	Direct Drive GEM 8890 High Vacuum Pump, flow rate 1.1 cfm, 31 L/min, vacuum 1×10-1 Torr, 1.3×10-1 mbar, supplied with exhaust filter 1417	2,888.05
8890A-75	Direct Drive GEM 8890 High Vacuum Pump Kit, flow rate 1.1 cfm, 31 L/min, vacuum 1×10-1 Torr, 1.3×10-1 mbar, supplied with tubing, gauge, Model 1421 vacuum regulator, Model 1416B exhaust mist eliminator, collection flask	3,300.28
8907A	Direct Drive Medium 8907 High Vacuum Pump, flow rate 2.6 cfm, 73 L/min, vacuum 1×10-4 Torr, 1.3×10-4 mbar, supplied with hose adapter and charge of vacuum pump oil, does not include exhaust filter	3,438.05
8912A	Direct Drive Medium 8912 High Vacuum Pump, flow rate 3.8 cfm, 108 L/min, vacuum 1×10-4 Torr, 1.3×10-4 mbar, supplied with hose adapter and charge of vacuum pump oil, does not include exhaust filter	3,850.28
8917A	Direct Drive Medium 8917 High Vacuum Pump, flow rate 6.1 cfm, 173 L/min, vacuum 1×10-4 Torr, 1.3×10-4 mbar, supplied with hose adapter and charge of vacuum pump oil, does not include exhaust filter	4,193.75
8920A	Direct Drive Large 8920 High Vacuum Pump, flow rate 7.7 cfm, 218 L/min, vacuum 3×10-4 Torr, 4×10-4 mbar, supplied with hose adapter and charge of vacuum pump oil, does not include exhaust filter	4,468.75
8925A	Direct Drive Large 8925 High Vacuum Pump, flow rate 11.3 cfm, 320 L/min, vacuum 4×10-4 Torr, 5.3×10-4 mbar, supplied with hose adapter and charge of vacuum pump oil, does not include exhaust filter	4,984.38
8995P-11	DirecTorr^® Premium Vacuum Oil, low vapor pressure, no additives or inhibitors, higher viscosity formula for higher rpm and direct drive pumps, 1 liter, inquire about larger gallon and drum quantities	145.92
8995G-11	DirecTorr^® Gold Vacuum Oil, exceptionally low vapor pressure, high stability in chemical environments, low back streaming, 1 liter, inquire about larger gallon and drum quantities	80.03
1421D	Vacuum Regulator used to control vacuum level between 6.3” Hg and 29.9” Hg, inlet accepts 1/4” ID vacuum hose, stainless steel	390.72
1421	Vacuum Regulator used to control vacuum level between 6.3” Hg and 29.9” Hg, inlet accepts 1/4” ID vacuum hose, for Direct Drive GEM 8890	299.81
1423B	Separator or liquid trap for use on inlet to inhibit injestion of liquid or particles by pump, or on exhaust to collect vapors expelled by the pump, accepts 1/4” ID vacuum hose	187.17
1430A	Hands free maintained on/off pump operation, no adaptors or special connection needed, plug directly into the power source outlet, 115V, 60HZ only	149.56
1430B	Hands free momentary on/off pump operation, no adaptors or special connection needed, plug directly into the power source outlet,115V, 60HZ	215.71
1430C	Hands free momentary on/off pump operation with IEC connections, no adaptors or special connection needed, plug directly between the IEC power outlet and supplied line cord, 90 – 230V.	215.55
1417	Standard exhaust filter, screw in type, filters to 0.3 micron particle size, for Direct Drive Compact 8905, Direct Drive Gem 8890, DuoSeal 1399 and 1400 (included as standard with Gem 8890)	205.06
1417P-7	Standard exhaust filter, screw in type, filters to 0.3 micron particle size, for Direct Drive Medium 8907, Direct Drive Medium 8912 and Direct Drive Medium 8917	376.75
1417P-10	Standard exhaust filter, screw in type, filters to 0.3 micron particle size, for Direct Drive Large 8920, Direct Drive Large 8925, DuoSeal 1376, 1402 and 1405	480.58
1417P-20	Standard exhaust filter, screw in type, filters to 0.3 micron particle size, for DuoSeal 1397 and 1374	703.98
1417L	Replacement filter element for exhaust filter 1417	102.85
1417R	Replacement filter element for exhaust filter 1417-7	153.95
1417G	Replacement filter element for exhaust filter 1417P-10	192.53
1417H-01	Replacement filter element for exhaust filter 1417P-20	236.18
1417A	Directional exhaust filter, screw in type, 360° swivel outlet with tubing connector, for Direct Drive Medium 8907, Direct Drive Medium 8912, Direct Drive Medium 8917, Direct Drive Large 8920, Direct Drive Large 8925, DuoSeal 1376, 1402 and 1405	541.42
1417A-01	Gasket replacement exhaust filter 1417A	57.56
1417G	Element for exhaust filter 1417A	192.53
1417C-02	Directional exhaust filter, screw in type, 360° swivel outlet with tubing connector, for DuoSeal 1400	551.54
1417B	Directional exhaust filter, screw in type, 360° swivel outlet with tubing connector, for DuoSeal 1374 and 1397	828.58
1417C-01	Gasket replacement exhaust filter 1417C	57.43
1417H	Element for exhaust filter 1417B	267.81
1416B	Exhaust mist eliminator for Direct Drive Gem 8890, for applications in which conventional exhaust filters saturate, separates oil mist and returns oil to pump	Inquire
1416C-01	Exhaust mist eliminator for DuoSeal 1380, 1376, 1402, 1405, for applications in which conventional exhaust filters saturate, separates oil mist and returns oil to pump	785.57
1416C	Exhaust mist eliminator for Direct Drive Medium 8907, Direct Drive Medium 8912, Direct Drive Medium 8917, Direct Drive Large 8920 and Direct Drive Large 8925, for applications in which conventional exhaust filters saturate, separates oil mist and returns oil to pump	632.50
1416H	Exhaust mist eliminator for Direct Drive Compact 8905, for applications in which conventional exhaust filters saturate, separates oil mist and returns oil to pump	635.53
1416D	Hermatically sealed oil mist eliminator, prevents vacuum pump gases from escaping into the lab environment, coalesces oil mist and allows it to drain back into pump, stainless steel, borosilicate microfiber element and fluoroelastomer gasket, exhaust port accepts 13/16 ID hose, needs adaptor kit for pump	1,020.73
1416E	Pump adaptor kit for 1416D oil mist eliminator	279.06
1417Y-05	Replacement element for 1416D oil mist eliminator	203.67
541922-NW16	Coaxial trap, ISO NW 16, reduces oil backstreaming, stainless steel, to 4 cfm or 140 L/min, 3.75 inches Ø, specify copper or stainless steel element	Inquire
541922-NW25	Coaxial trap, ISO NW 25, reduces oil backstreaming, stainless steel, to 12 cfm or 340 L/min, 5.5 inches Ø, specify stainless steel element	Inquire
1420H-14	Liquid nitrogen or dry ice cold trap, removable 3 quart center well for dry ice and alcohol slurry, cold temperature up to 12 hours depending on vapor load, straight tube connections, 10 inches Ø, 7/16 inch OD tubing required	1,200.49
1393J	Exhaust connectors to hose for Direct Drive Compact 8905, Direct Drive Gem 8890 and DuoSeal 1400	56.42
1393K	Exhaust connectors to hose for Direct Drive Medium 8917, Direct Drive Large 8920, Direct Drive Large 8925, DuoSeal 1402 and 1405	94.50
1393F	Exhaust connectors to ISO flange for Direct Drive Compact 8905, Direct Drive Gem 8890 and DuoSeal 1400	61.48
1393G	Exhaust connectors to ISO flange for Direct Drive Medium 8917, Direct Drive Large 8920, Direct Drive Large 8925, DuoSeal 1402 and 1405	108.79
302201	ISO NW 16 aluminum hinged clamp for Direct Drive Compact 8905 and DuoSeal 1400	29.48
302202	ISO NW 25 aluminum hinged clamp for Direct Drive Medium 8907, Direct Drive Medium 8912, Direct Drive Medium 8917, Direct Drive Large 8920, Direct Drive Large 8925, DuoSeal 1402 and 1405	33.40
303101	ISO NW 16 centering rings, stainless steel with fluoroelastomer o-ring, for Direct Drive Compact 8905 and DuoSeal 1400	21.64
303102	ISO NW 25 centering rings, stainless steel with fluoroelastomer o-ring, for Direct Drive Large 8920, Direct Drive Large 8925, DuoSeal 1402 and 1405	33.28
8905K-06	Unibarb inlet connector for Direct Drive Compact 8905, hose ID 3/16 and 7/16 inch	107.14
8907K-06	Unibarb inlet connector for Direct Drive Medium 8907, Direct Drive Medium 8912 and Direct Drive Medium 8917, hose ID 7/16 and 13/16 inch	112.97
8920K-06	Unibarb inlet connector for Direct Drive Large 8920 and Direct Drive Large 8925, hose ID 9/16 and 13/16 inch	139.43
726021	Dial vacuum gauge for measuring vacuum level, brass, 2 inches diameter, 1/8 inch male NPT connection	56.65
726020	Dial vacuum gauge for measuring vacuum level, brass, 2.5 inches diameter, 1/4 inch male NPT connection	107.75

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