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SteelPro..Precision Valve Manufacturing
Trunnion Mounted Ball Valve
Side Entry, Trunnion Design

Trunnion Mounted Ball Valve

Heavy-duty performance for high-pressure and large-diameter applications

Engineered for demanding high-pressure service, our trunnion mounted ball valve uses a fixed ball supported by upper and lower bearings. The spring-loaded seats provide consistent sealing force at both low and high pressures, making it ideal for upstream oil & gas and long-distance pipeline applications.

API 6DISO 9001CE PEDAPI 607 Fire SafeSIL 3

Technical Specifications

Size RangeNPS 2″ – 56″ / DN 50 – 1400
Pressure RatingClass 150 – 2500 / PN 16 – 420
Temperature Range-46°C to +425°C
Body MaterialWCB Carbon Steel, LCB/LCC Low-Temp CS, CF8M SS, Duplex, Inconel 625
Seat MaterialPTFE, Nylon, Devlon®, Metal (Stellite/Tungsten Carbide)
End ConnectionRF Flanged, RTJ Flanged, Butt-Weld
Design StandardAPI 6D, ASME B16.34, ISO 17292
Fire SafeAPI 607, API 6FA
Fugitive EmissionsISO 15848-1, TA-Luft
Testing StandardAPI 6D, API 598

Key Features

  • Trunnion-supported ball absorbs thrust loads, reducing operating torque
  • Spring-loaded seats ensure tightness at low pressure and self-relieving cavity
  • Double block and bleed (DBB) capability for positive isolation
  • Metal-seated option available for high-temperature and abrasive service

Industry Applications

Oil & Gas wellheadsLong-distance pipelinesLNG liquefactionRefinery process unitsGas transmission

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