AccuStandard, Inc.
USA, Lab Standards

Advantica
UK; gas technology area formerly of British Gas

Aggreko plc
UK, supply of temporary power, temperature control and oil-free compressed air services

Air Products and Chemicals, Inc.
USA, LNG heat exchange

Air-X-Changers
USA, air-cooled heat exchangers

Al Bawardi Enterprises
United Arab Emirates, Centrifugal process pumps, standard centrifugal water pumps,air/gas centrifugal compressors, ball valves, pic valves, production choke valves, etc.

Alfa Laval
Sweden, separation systems for offshore and onshore oil and gas drilling and production, for crude oil storage, desalination plants

ALTEC International
USA, cryogenic equipment, heat exchangers

Alternative Fuel Systems Inc.
Canada, designs, manufactures, markets, and commissions complete diesel dual fuel systems

AMCEC, Inc.
USA, Vapor Phase Adsorption Systems

American Lewa Inc.
USA, pumps, liquid metering, proportioning, injection, controlled volume and chemical feed applications

AMETEK Process Instruments
USA, process instruments

Anatec International
USA, non-destructive testing

Anderson Greenwood
USA, pressure relief valves, tank blanketing products and instrumentation valves and manifolds