Valve: Trunnion Ball Valve
Manufacturers: past and present:
- AC Valve Alliance (UK): Pekos, Perar, Starline
- Anix
- Babcock Valves SA (Spain)
- Balon Corp
- Bonney Forge
- Bray
- Brooksbank Valves (UK)
- Cameron: SLB: Grove
- Chaoda
- CTGV (China)
- CNC Flow Control (international)
- Davis Valve
- Dembla Valves Ltd (India)
- Dervos Valve (international)
- Dombor (China)
- Edmund Valve Company Ltd (UK)
- Emerson: KTM
- Everlasting Valve
- FBV Inc. (China)
- Flowserve: Argus
- GWC Italia
- HrFraser (international)
- ITT Engineered Valves: Cam-Line
- JMC
- KF Valves
- Kingdom (Taiwan)
- Kitz
- KVE GmbH kihsco Valves Europe (International)
- L.C.M. Italia S.p.A
- L&T (international)
- Maverick Valves Manufacturing Italy SRL
- Neway
- Oliver Valves (UK)
- Omal Automation (international)
- OMB: Vogt: Nencini: Leslie (international)
- Pietro Fiorentini
- Ranger
- Rays Flow Control (China)
- Samson AG
- SCV Valve
- Syveco (France)
- Tiger Valve Co (TVC)
- Velan
- Walworth
- Warren Valve
- William Valve
- Swagelok (small)
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- Instrumentation
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- Manholes Concrete
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