O-Rex™ Double Eccentric Ball ValveNEW
Trunnion mounted ball valves
IMI Orton’s O-Rex™ Double Eccentric Ball Valve was engineered to meet the rigorous demands of critical service applications across industries, including oil and gas, hydrogen, chemical, petrochemical, and mining. It combines the robustness of a trunnion-mounted ball valve with the low-torque operation of a triple offset butterfly valve, offering high performance and durability even in the harshest conditions.
- Cavity-free design prevents over-pressurisation.
- High endurance bearings for reliable, repeatable performance.
- Double eccentric mechanism for friction-free operation.
- Bi-directional tight shut-off for leak prevention.
- Torque-seated design ensures mechanical sealing.
- Top entry access for easy maintenance.
- Piggable for pipeline cleaning applications.

Product Specifications

Size range
- DN 12 to 900
Pressure class
- ANSI Class 150 to 4500
Temperature range
- -254°C to +750°C (-425°F to +1382°F)
End connections
- ANSI flanges B16.5 / B16.47
- NORSOK L-005
- HUB (all major designs)
- Butt weld / socket weld
Sealing materials
- Metal or soft
Operation
- On/off & modulation
Bill of materials
- Body: ASTM A216 WCB / ASTM A351 CF8M
- Ball & Seat: 316 Stainless Steel with Tungsten Carbide HVOF coating
- Stem: Nitronic 50 or 17-4 PH
- Bearings: High endurance bearings
- Gasket/Packing: Low emission graphite
Certifications and approvals
- Design: ASME B16.34, API 6D, API 6A
- Fire Safe: API 607, ISO 10497, API 6FA
- Low Fugitive Emissions: ISO 15848-1 Class AH
- Bidirectional Tightness: API 598
- Marine Approvals: ABS, DNV-GL, BV
- Endurance Test: PR2 approved, 15K cycles
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