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
Standard T-Pattern Throttling
Classic 90-degree T-pattern body provides a well-characterised flow path with moderate pressure drop, making it the industry standard for throttling service where flow modulation and seat erosion resistance are required.
Renewable Seat Ring
Replaceable seat ring allows in-line maintenance without removing the valve, reducing long-term ownership cost and extending valve life in throttling service where seat erosion occurs.
Backseat Design
Stem backseat allows packing replacement while the valve is under pressure, improving maintenance safety and reducing downtime during scheduled overhauls.
Stellite Disc and Seat
Stellite 6 hard-facing on both disc and seat resists erosion and galling at high velocity and high temperature, extending trim life in severe steam and process service.
Anti-Blowout Stem
Stem is retained by the bonnet geometry and cannot be ejected under pressure, meeting API 600 / API 602 safety requirements.
Directional Flow Marking
Body is clearly cast-marked with flow direction arrow to ensure correct installation -- flow under the disc for best shutoff, over the disc for best throttling control.