RAM™ GJ Positive Displacement Blowers

The RAM™ WHISPAIR™ line of standard rotary positive gas pumps is intended for use with non-corrosive gases. The gas pumps have a proprietary design that reduces noise and power loss by utilizing an exclusive wrap-around flange and jet to control pressure equalization - eliminating rapid backflow of gas into the pump from the discharge area.

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Operating Principle

Incoming air is trapped by the impellers. Simultaneously, pressurized air is being discharged (right). As the lower impeller passes the wrap-around flange, WHISPAIR™ jets equalize pressure between trapped air and the discharge area, aiding impeller movement and reducing power requirements. Impellers move air into the discharge area (right). Backflow is controlled, resulting in reduction of noise relative to conventional blowers.

whspair_princ_op.pdf