Single Stage Fabricated Centrifugal Blowers

Spencer single stage scroll blowers, aeration/ventilation blowers and heavy-duty RB pressure blowers are widely used in Original Equipment Manufacturing applications and in processes that require uniform airflow over an entire volume range. Typical uses are aeration, combustion air delivery, ventilation, materials handling, air curtains and drying. Maximum airflow volume is 50,000 ICFM, maximum pressure 3.5 PSIG.

Multistage Fabricated Centrifugal Blowers

There are three designs of Spencer multistage fabricated machines: standard overhung (SOH), four-bearing overhung (4BOH) and four-bearing outboard (4BOB). Sheet steel construction is standard for blower housings, but other metals can be selected for specialized resistance in cases involving extremely high temperatures, chemicals or corrosive conditions. With housing diameters from 14″ to 88″, these blowers can handle volume to 25,000 ICFM, pressure to 20 PSIG and vacuum to 15″ Hg.

Custom Blowers & Gas Boosters

For very difficult gas handling jobs, Spencer offers high-performance blowers and gas boosters with special designs and constructions using a variety of high-performance metals such as Hastelloy®, stainless steel and titanium. Typical gases handled include corrosive and toxic sulfides, halogens, acids, flue and stack gases, cyanides and ammonia. Maximum parameters include temperatures to 1100°F, housing design pressures to 1000 PSIG, operating pressures to 300 PSIG.

Special Features

Spencer has a variety of choices to deal with unusual applications. They include special materials, coatings and corrosion allowances for corrosive gases; effective sealing techniques or hermetic, leaktight configuration for hazardous gases; alternative drivers such as gas turbines instead of electric motors; belt drives for blower operation at a specific speed; various drive arrangements and couplings; and accessories from acoustical wraps to vibration isolating pads.