Birdwell Company Products - Shield Air Solutions, Inc.

Birdwell Products

The Birdwell Company

The Birdwell product line provides custom engineered and built severe duty and explosion proof HVAC, pressurization and chemical air filtration equipment. Birdwell equipment is constructed of heavy duty, non-corrosive materials for hazardous and industrial applications. Since its inception in 1959, The Birdwell Company has engineered and manufactured rugged, corrosion resistant equipment with a track record of safety and reliability. There is Birdwell equipment in the field today that has been operating for more than 30 years.

Wall Mounted
Single package, wall mounted, environmental control systems, purpose-built

Redundant Wall Mounted
Single package, 100% redundant, wall mounted, & purpose-built

Split Systems
Split type air conditioning and heating systems, custom-built

Roof Mounted
Single package, roof or pad mounted, environmental control systems, purpose-built

Class	Hazardous Material in Surrounding Atmosphere
Class I	Hazardous because flammable gases or vapors are present in the air in quantities sufficient to produce explosive or ignitable mixtures.
Class II	Hazardous because combustible or conductive dusts are present.
Class III	Hazardous because ignitable fibers or flying’s are present, but not likely to be in suspension in sufficient quantities to produce ignitable mixtures. Typical wood chips, cotton, flax and nylon. Group classifications are not applied to this class.

Division	Presence of Hazardous Material
Division 1	The substance referred to by class is present during normal conditions.
Division 2	The substance referred to by class is present only in abnormal conditions, such as a container failure or system breakdown.

Group	Hazardous Material in Surrounding Atmosphere
Group A	Hydrogen, fuel and combustible process gases containing more than 30% hydrogen by volume or gases of equivalent hazard such as butadiene, ethylene, oxide, propylene oxide and acrolein.
Group B	Hydrogen, fuel and combustible process gases containing more than 30% hydrogen by volume or gases of equivalent hazard such as butadiene, ethylene, oxide, propylene oxide and acrolein.
Group C	Carbon monoxide, ether, hydrogen sulfide, morphline, cyclopropane, ethyl and ethylene or gases of equivalent hazard.
Group D	Gasoline, acetone, ammonia, benzene, butane, cyclopropane, ethanol, hexane, methanol, methane, vinyl chloride, natural gas, naphtha, propane or gases of equivalent hazard.
Group E	Combustible metal dusts, including aluminum, magnesium and their commercial alloys or other combustible dusts whose particle size, abrasiveness and conductivity present similar hazards in connection with electrical equipment.
Group F	Carbonaceous dusts, carbon black, coal black, charcoal, coal or coke dusts that have more than 8% total entrapped volatiles or dusts that have been sensitized by other material so they present an explosion hazard.
Group G	Flour dust, grain dust, flour, starch, sugar, wood, plastic and chemicals.