Air Leakage Proof Rotary Blower is available with spring loaded safety valve mounted in the discharge end and its sturdy construction ensures durability of operation for longer period of time. Rotary Blower is provided with angular contact ball bearings at non-drive end, which eliminates the chances of shifting of the lobes or rotors to either side. The Proof Rotary Blower is mostly suitable for running at higher speeds up to 4000 RPM. Air Leakage Proof Rotary Blower has large oil sumps on drive and non-drive ends.