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
Axial Flow Design
Disc moves axially along the flow centreline, maintaining a streamlined flow path with minimal turbulence and pressure drop -- typically 50% lower than swing check valves of equivalent size.
Non-Slam Closure
Spring-assisted disc returns to seat rapidly on flow reversal, preventing the water hammer and pipeline vibration common in swing check valves.
Any Orientation Installation
Spring-assisted axial design works reliably in horizontal, vertical, or inclined pipelines.
Compact Wafer Design
Short face-to-face wafer pattern minimises weight and space, reducing pipe support requirements.
Stellite Seat Overlay
Stellite 6 hard-facing on seat ring resists erosion from high-velocity flow impingement during closure.
Low Cracking Pressure
Lightweight disc and optimised spring provide cracking pressure as low as 0.03 bar.