Spencer is right at home in industry. Our central vacuum systems, centrifugal blowers, pneumatic conveying systems, regenerative blowers, air sampling equipment, wastewater aeration blowers, dust collection systems and high pressure blowers have different uses but identical traits. They are all designed to run for long periods under difficult operating conditions with little maintenance.

Chemical and petrochemical processes may pose combinations of problems in handling toxic, flammable, corrosive, hazardous, high pressure and high temperature gases. Spencer has the expertise – and interest – to tackle such nightmares with special blowers and gas pressure boosters. Our engineers use specialized alloys, custom coatings and surface treatments, extra-thick housing walls with corrosion allowances, non-sparking alloys and high-efficiency seals to conquer the worst possible conditions. We have developed effective solutions for situations that are so difficult, there are sometimes no other qualified sources anywhere in the world.

Typical WWTF blower applications

Mining Ventilation, flotation cells
Power generation Flue gas handling, natural gas boosting
Pharmaceutical Dust collection, hazardous material collection
Manufacturing Vacuum cleaning, high-velocity dust collection
Chemical Waste gas disposal
Plastics Process air drying
Electronics Cleanroom dust collection and cleaning
Aerospace Test stand air supply
Food processing Spill cleanup, recyclable materials collection
Petroleum Process gas handling, desulfurization
Metal finishing Plating tank agitation
Printing Scrap collection
Petrochemical Combustion air blowers
Primary metals Air knife blowers


Specially adapted Industravac® mobile vacuum system has two manifolds with four vacuum inlets a piece to accommodate large cleaning crews with up to eight simultaneous operators in an aerospace manufacturing and retrofit facility.

AEROSPACE PROBLEM SOLVED. An aerospace company wanted a mobile, compact industrial vacuum system for a facility that retrofits jet aircraft. The system had to wheel up to a jet with eight vacuum hoses and clean the entire aircraft fast—without risking fire or explosion around volatile jet fuel. Spencer modified a standard mobile vacuum system to accept multiple hoses, used explosion-proof or grounded components throughout, and delivered just what the customer ordered.

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Spencer vacuum system with Power Mizer® vacuum producer recovers spilled cereal from packaging machines for recycling as animal feed.


Spencer convinced a breakfast food manufacturer to switch from wet sanitation to dry vacuuming around its packaging lines, eliminating an organic waste discharge. A bonus benefit: our client was able to recover and collect the spilled cereal to sell for animal feed.


Multistage Power Mizer cast centrifugal blower, ready for shipment to an overseas paper mill for a “green” application recovering mill byproducts.


To convert paper mill byproducts into environmentally responsible ingredients for paper-making, an OEM company needed reliable flue gas blowers. Spencer dealt with the harsh operating conditions by equipping centrifugal blowers with special coatings, shaft seals, bearing seals and flushing provisions. The blowers are going into new installations and also replacing other blowers because they are more reliable and efficient.


Housing of this high-performance Spencer blower is fabricated of Hastelloy® for corrosion resistance when handling toxic waste gases in European pharmaceutical plant.


An American pharmaceutical giant needed special blowers for two overseas plants to dispose of high temperature, corrosive waste gases. We designed four special fabricated blowers, met strict European codes for blowers in explosive atmospheres, found European sources for components not available in the U.S. and provided mechanical and electrical startup services in two countries.


Compact, mobile and totally integrated, this Industravac vacuum system provides convenient cleanup of mercury vapor spills to eliminate an environmental hazard.


To protect its employees and avoid an OSHA fine, a lighting manufacturer needed a one-of-a-kind mobile vacuum cleaning system that would prevent the release of toxic mercury vapor during fluorescent tube production. Spencer delivered more than requested. Special provisions include an air compressor and storage tank, cartridge separator with periodic automated cleaning, activated carbon filter and high-efficiency HEPA filter.



Specially configured Power Mizer blowers headed for Central Java in Indonesia feature two unusual drives—a 50Hz electric motor and a steam turbine.


Spencer won the contract for an Indonesian oil and gas refinery application through a combination of product and engineering advantages. We adapted two multistage centrifugal blowers for use as degassing blowers, supplying air and hydrocarbons to a byproduct combustion unit. One blower has a gear increaser to compensate for 50Hz electricity; the other has a steam turbine power source for standby emergency use during power outages.


Custom fabricated blower for acetylene production in Louisiana has extraordinary safety and control features to deal with this potentially unstable gas.


Acetylene gas is a vital industrial raw material that is explosively unstable above 300°F. The heat of compression inside a blower, coupled with a spark, could be catastrophic. The Spencer solution, developed for a chemical manufacturing facility, included high-pressure blower housings, nonsparking aluminum internal components and a nitrogen-purged control panel to avoid sparks.