These small direct drive oil sealed vacuum pumps should not be operated continuously at pressures above 50 torr.
Welch direct drive vacuum pump.
Oil diffusion pumps from welch are used to generate a high and ultra high vacuum up to a pressure range of 5x10 7 mbar with an extremely high pumping speed.
Other direct drive rotary vane vacuum pumps.
Runs 10 c cooler than comparable pumps.
Welch direct drive rotary vane vacuum pumps achieve vacuum levels down to 1x10 4 torr 0 1 micron with flows up to 11 3 cfm.
The new crvpro family of direct drive vacuum pumps offers increased reliability and longer service interval vs.
The 8905a achieves 0 050 torr with a pumping speed of 51 liters min 1 8 cfm.
Two stage oil sealed vacuum pumps should not be operated continuously at pressures above 1 torr.
Three features drive these benefits.
Designed for direct drive vacuum pumps this triple distilled hydrocarbon oil is derived from hydrotreated base stock for high performance in vacuum pump operation at elevated temperatures.
The crvpro family consumes up to 36 less oil than comparable pumps.
Welch premium vacuum pump oil resists breakdown during the high rpm operation of direct drive pumps.
Welch s belt driven vacuum pumps are available with an ultimate pressure of 1x10 4 mbar with a comprehensive pumping speed ranging between 1 3 m h and 15 m h.
Direct drive pumps are not.
The crvpro family consumes up to 36 less oil than comparable pumps.
Our extensive portfolio includes diaphragm pumps rotary vane pumps piston pumps and turbomolecular pumps and systems in addition to a wide range of accessories.
The 8920a achieves 0 001 torr with a pumping speed of 218 liters min 7 7 cfm.
Vacuum system configuration with a cold trap is recommended for use with harsh chemicals.
These compact portable oil seal pumps are recommended for a variety of laboratory applications.
Applied vacuum technology for laboratory and industry welch is a leading pump manufacturer of high quality durable vacuum products.
The new crvpro family of direct drive vacuum pumps offers increased reliability and longer service interval vs.
The welch 8920a direct drive vacuum pump is a robust vacuum pump for applications requiring pressures 1 torr.
Runs 10 c cooler than comparable pumps.
Enables direct drive pumps to maintain the highest vacuum performance over time.
Besides single pumps welch also offers complete oil diffusion pump systems.
Welch premium vacuum pump oil resists breakdown in the high rpm operation environment of direct drive pumps.
The welch 8905a direct drive vacuum pump is a robust vacuum pump for applications requiring pressures 50 torr.
Three features drive these benefits.
Other direct drive rotary vane vacuum pumps.
