MB Blowers with bi-lobe are heavy duty style, and the technology is from America.
It is the replacement for Duroflow models of Gardner Denver and RAM/RCS models of Dresser Roots.

Features:
High efficiency bi-lobe rotor
Noise-reduction know-how application for casing
Integral-shaft ductile iron impellors
Dual splash lubrication
Oversized cylindrical roller bearings
Hardened teeth face for precision helical timing gear, taper-lock shaft mounting
Versatile configuration
Piston ring air seals
Lip type viton oil seals
Air cooling
Automatic belt tensioner and integrated discharge silencer base frame application for the blower package.
Specification:
Pressure to 103 KPa / Vacuum to -49 KPa
Flow: 2.6~90.3m3/min

Application:
Widely used in waste water treatment, petro-chemical, cement, power, metallurgy and pneumatic conveying diverse industries.