How to Select a Trunnion Ball Valve
How to select a trunnion ball valve — trunnion ball valve selection guide covering size, pressure class, SPE/DPE seats, DBB/DIB, forged or cast body, RF/RTJ/BW ends, actuation and testing.
How to Select a Trunnion Ball Valve: information to prepare before quotation.
Trunnion ball valve selection guide covering size, pressure class, SPE/DPE seats, DBB/DIB, forged or cast body, RF/RTJ/BW ends, actuation and testing.
Recommended workflow
Start with service conditions, then confirm valve construction and project compliance. This order avoids choosing a valve from only one product name or pressure class while missing the engineering constraints that control the final design.
- Confirm line size and pressure class
- Define design pressure and temperature
- Choose full bore or reduced bore
- Define SPE, DPE, DBB or DIB requirements
- Select cast or forged body construction
- Confirm body, trim, seat and sealing materials
- Choose RF, RTJ or butt-weld ends
- Define fire-safe, emissions and NACE requirements
- Confirm actuator sizing and torque margin
- Issue inspection and documentation requirements
Use the checklist with project documents
Attach the piping class, valve datasheet and applicable project specifications when available. State any mandatory deviation format, document list, inspection witness points and painting requirements in the RFQ.
How to Select a Trunnion Ball Valve FAQ
Why use a trunnion ball valve selection?
It helps provide complete technical data and reduces clarification cycles before quotation.
Should project specifications be sent with the datasheet?
Yes. The valve datasheet should be reviewed together with the governing valve, material, testing and coating specifications.
Can the manufacturer select missing data automatically?
Missing data should be clarified rather than assumed when it affects design, materials, safety, compliance, price or delivery.