Product Line Details
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.
The standard model is designed using integral-shaft ductile
iron impellers with an involute profile. Alloy steel timing gears
are taper mounted on the shafts, and cylindrical roller
bearings are used. Both ends of the unit are splash oil
lubricated. A hydrodynamic seal on the drive shaft prevents
shaft seal oil leaks. The casing and headplates are grey iron
on standard units, while the drive end cover and gear cover
are aluminum. Piston ring seals form labyrinth between the
compression chamber and cored vent cavities. The vent
cavities are plugged for purge or drain.
Special long-life mechanical seals and viton O-rings are
installed at each bearing to control gas and oil leakage, and
are suitable for vacuum or pressure service. Each seal
incorporates a unique geometry that promotes the flow of
oil, air and vapor across the back of the stainless steel seat
to enhance cooling and extend seal life.
All frame sizes are designed with detachable rugged steel
mounting feet which permit in-field adaptability to either
vertical or horizontal installation requirements.
Twenty-Four (24) months from date of original unit start-up or 30 months from date of original shipment, whichever occurs first.