Materials of Construction (MOC)
| Component | Material Specification |
|---|---|
| Body & Bonnet | Cast Steel (ASTM A216 Gr. WCB/WCC) |
| Stem / Spindle | SS 410 / SS 304 |
| Seat / Trim | 13% Cr. SS / Stellite 6 Overlay |
Technical Specifications
| Parameter | Specification / Standard |
|---|---|
| Manufacturing / Design Standard | API 600 / BS 1414 / ASME B16.34 |
| Testing Standard | API 598 / EN 12266-1 |
| Pressure Rating | Class 150 / Class 300 / Class 600 |
Features & Benefits
Parallel Slide No Wedging
Parallel disc design eliminates wedge-induced thermal binding common in traditional gate valves during steam temperature cycling.
Spring-Loaded Disc Spreader
Inconel X-750 spring maintains constant disc spreading force, ensuring seat contact through thermal transients and pressure variations.
Low Operating Torque
Parallel slide geometry and thrust bearing handwheel nut reduce operating torque by 30-40% compared to wedge gate valves of equal size.
Full Port Low Pressure Drop
Full-bore design matches pipe ID for negligible flow restriction, reducing pumping energy and allowing pigging passage.
Thermal Cycling Resistant
Materials and geometry selected for repeated thermal shock from cold start to full-load steam temperature without degradation.