Rugged cast iron or cast aluminum modular construction designed for continuous,
dependable operation year after year.
Uniform delivery of pulse free, oil free air.
Quiet performance in compliance with OSHA regulations without the need for silencing.
Variable volume flow capabilities up to 45,000 CFM.
High efficiency design with adiabatic efficiencies up to 82%.

Casing:

 Cast iron or cast aluminum housings, held securely by steel tie rods. Sections are standard with internal and/or external drains.
Shaft: Polished carbon steel or stainless steel for corrosive gas applications.
Impellers: Cast or fabricated high strength aluminum, available in radial or backward curved vane configurations.
Bearings: Outboard mounted, grease or oil lubrication, sized for minimum 10 year bearing life. Optional water cooled bearings are available.
Seals: Carbon/graphite rings, single for air or double for gas applications, purge capability available.
Baffle Rings: For improved airflow into the impeller eye, resulting in higher efficiency and improved performance.
Balance Piston: Used to absorb up to 75% of the axial thrust load in blowers operating at higher flows and pressure ratios.
Bearing Housing: Cast iron housing with labyrinth seals to protect lubricant from contamination.
Cooling Fans: Models 77 and larger incorporate cast aluminum cooling fans to assist heat dissipation.