AsalAra Trunnion-Mounted Ball Valve – API 6D Pipeline Valve
Heavy-duty ball valve with a supported ball shaft for high-pressure, large-diameter pipeline applications.

The AsalAra Trunnion-Mounted Ball Valve is engineered for demanding pipeline applications that require maximum performance, long-term sealing, and low torque operation. The ball is anchored at the top and bottom (trunnions) and remains stationary under pressure while the seats move toward the ball for sealing. This design minimizes wear, supports large valve sizes and pressure ratings, and ensures reliable double-block-and-bleed (DBB) performance.
Optimized for the oil, gas, and petrochemical sectors, this valve is fully compliant with API 6D, ASME B16.34, and available with fire-safe and fugitive emission features. AsalAra’s trunnion valves can be custom-automated and are available in side-entry, top-entry, or fully welded body designs.
Why AsalAra?
AsalAra’s Trunnion Ball Valves reflect global engineering excellence — delivering reliability, safety, and longevity. Whether for compact utility systems or high-pressure gas pipelines, AsalAra offers unmatched sealing technology and lifecycle value.
Size Range
NPS (inch)
DN (mm)
2” – 56”
DN 50 – DN 1400
Pressure Class
Standard Rating
ASME
Class 150 – 2500
API
Up to API 10,000 psi
Materials
- Body: A105, WCB, LCC, LF2, F316, Duplex, Inconel
- Ball: SS 316 / ENP / Tungsten coated
- Seats: PTFE, RPTFE, Devlon, PEEK, Metal-seated
- Stem: Stainless or Alloy Steel (Anti-blowout)
- Seals: Graphite / Viton / NBR / FKM
Standard Connections
- Flanged (RF / RTJ per ASME B16.5 / B16.47)
- Butt Weld (ASME B16.25)
- Hub or Clamp Ends (upon request)
Product Line
AsalAra TBV Series – Trunnion-Mounted Ball Valves
Feature
Benefit
Trunnion Support
Reduced seat load, lower operating torque
Double Block & Bleed (DBB)
Allows venting of cavity and safe isolation
Fire-Safe Certified
API 6FA / ISO 10497 tested for hazardous service
Anti-Static & Anti-Blowout Design
Enhanced safety for hydrocarbon service
Fully Welded / Top Entry Options
Suitable for buried or inline maintenance applications
Actuator-Ready Design
ISO 5211 pad for easy motorization
Low Fugitive Emissions
Meets ISO 15848 / TA-Luft requirements
Extended Stem Options
Suitable for cryogenic or buried installations
- Crude oil & natural gas pipelines
- Compressor & metering stations
- LNG plants
- Tank farms and terminals
- Petrochemical isolation
- Offshore & subsea (on request)