Materials of Construction (MOC)
| Component | Material Specification |
|---|---|
| Body & Bonnet | Stainless Steel (ASTM A351 Gr. CF8/CF8M) |
| Stem / Spindle | SS 304 / SS 316 |
| Seat / Trim | PTFE / RPTFE / Integral |
Technical Specifications
| Parameter | Specification / Standard |
|---|---|
| Manufacturing / Design Standard | ASME B16.34 / API 603 / API 6D |
| Testing Standard | API 598 / EN 12266-1 |
| Pressure Rating | Class 150 to Class 600 / PN16 / PN40 |
Features & Benefits
In-Line Maintenance
Top-entry bolted bonnet cover is removed from the top of the valve while the body remains in the pipeline, allowing replacement of seats, seals, and stem packing without system shutdown or pipe disassembly.
Single-Piece Body
One-piece forged or cast body eliminates the body joints and potential leak paths of split-body (two-piece or three-piece) designs, improving pressure integrity and reducing fugitive emissions.
Full-Bore or Reduced-Bore Options
Full bore equal to pipe ID for unrestricted flow and pigging capability; reduced bore for lower weight and cost where flow capacity is not critical.
Fire-Safe Design
Primary PTFE soft seat for bubble-tight shutoff under normal conditions; secondary metal/graphite seat maintains shutoff after fire exposure per API 607 / ISO 10497.
Anti-Blowout Stem
Stem is retained by the body geometry and cannot be ejected under pressure, ensuring operator safety even with the actuator removed during maintenance.
Seat Spring-Loaded
Spring-energized seats maintain contact pressure against the ball, ensuring tight shutoff at low differential pressures and compensating for seat wear over the valve service life.