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
Combined Stop and Check
Single valve body provides both manual positive isolation and automatic lift check action, saving piping space and weld joints.
Manual Positive Isolation
Rising stem and handwheel allow operator to positively close valve against line pressure for maintenance and isolation.
Automatic Lift Check Action
Free-floating guided disc lifts with forward flow and seats automatically on flow reversal without operator intervention.
Guided Disc Prevents Chatter
Integral guide wings and body guide ribs maintain disc alignment, preventing vibration-induced chatter and seat damage.
Optional Spring-Assisted Closure
Inconel X-750 spring provides rapid disc seating on flow reversal, minimising water hammer and backflow in pump discharge lines.