Partial Customer List:
- Anderson Greenwood
- Anvil Products
- Aramco Services
- Arco Alaska
- Asna Systems
- Automation Services
- BP Amoco
- Badger Meter
- Bahrain Petroleum
- Baker SPD
- Bapco
- Bariven Corporation
- Bechtel Energy Corporation
- Bel Valves
- Bray Valve
- Bruce Power (nuclear)
- Cal Tex International
- Camco
- Cameron Valves
- Canadian Petroleum
- Carolina Power & Light (nuclear)
- Celanese Chemicals
- Chevron Chemicals
- Chicago PP&L
- Conoco
- Cooper Cameron
- Cooper Oil Tool
- Daniel Valve
- Dezurik
- Dow Chemical
- Dresser Industries
- Dupont
- Equistar Chemicals
- Exxon Chemicals
- Firestone Chemicals
- Fisher Valve
- Fisher Services
- Flowserve
- Goodyear Tire & Rubber
- Groth
- Hoke Valve
- Huntsman Corp.
- Illinois Machine
- KF Industries
- Keystone Valve
- Kvaerner
- Marathon Oil
- Mobil Chemical
- Mueller Steam
- National Oilwell
- Neles Jamesbury
- Norriseal Controls
- Ontario Power (nuclear)
- Orbit Valve
- Pemex
- Powell Valves
- Procter & Gamble
- Saudi Arabian Development Corp.
- Serck Audco
- Shell Oil
- Spirax Sarco
- U.S. Navy
- Virginia Power
- Wolf Creek Nuclea
