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
Full-Bore Zero Restriction
Full bore equal to pipe ID provides unrestricted flow with zero pressure drop when open, allowing pipeline pigging (inspection gauge) passage and preventing debris accumulation in the body cavity.
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.
Compact Wafer Design
Short face-to-face wafer pattern minimises weight and space, reducing pipe support requirements and installation cost compared to flanged swing check valves.
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.
Bolted Cover Maintenance
Bolted cover with spiral wound gasket allows easy access to disc, hinge, and seat for inspection and replacement.