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
Compact Wafer Design
Short face-to-face wafer pattern is 60--70% shorter than equivalent flanged swing check valve, minimising weight, space, and installation cost -- ideal for retrofit and space-restricted installations.
Fits Between Flanges
Wafer body fits between existing mating flanges without replacing flange pairs, reducing installation cost and downtime during valve replacement or system upgrade.
Low Pressure Drop
Hinged disc swings fully clear of the flow path when open, presenting minimal obstruction -- pressure drop is lower than piston or nozzle check valves of equivalent size.
Renewable Seat Ring
Replaceable seat ring allows in-line maintenance without removing the valve from the pipeline.
Stellite Seat Overlay
Stellite 6 hard-facing on seat ring resists erosion and wear from flow impingement during closure.
Full-Bore or Standard-Bore Options
Full bore equal to pipe ID for unrestricted flow and pigging; standard bore for lower weight and cost where flow capacity is not critical.