This product is no longer available. Some accessories, replacement parts, or services may still be available.
RB0021-L Sample Pump, Modified


The RB0021, manufactured by Busch, is an air-cooled, direct-drive, oil-sealed, rotary-vane pump used in higher flow applications. In trace-gas analyzer systems, the RB0021 is used to pull sample air from the intake(s) to the rest of the system and/or purge air from the sample dryer(s) to the pump. This pump is supplied with oil, a suction hose (user-specified length), and all of the fittings needed to connect with the trace-gas analyzer. The RB0021 has a capacity of 6 liters per second at 50 mbar. 

The "-L" on a product model indicates that the cable length is specified at the time of order.



Capacity 6 actual liters/sec @ 50 mbar
Power 950 W
Dimensions 44.2 x 29.2 x 26.9 cm (17.4 x 11.5 x 10.6 in.)
Weight 19 kg (42 lb)


The RB0021-L is compatible with 7123 Raw PVC Suction Hose.

Listed Under

Other Accessory for the following products:

Privacy Policy Update

We've updated our privacy policy.  Learn More