The R-VWP series of rotary lobe vacuum pumps is manufactured by Elmo Rietschle. This series of pumps is available in variants namely R-WVB 25, R-WVB 120- 8,300, R-WVB 01, R-WVB 30 and R-WVB 70. These pumps are capable of delivering optimum performance in a minimal noise level and pulsation as well as optimum efficiency due to their speed, stable design, and convenient service.