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Technical Datasheet -- V-Notch Segmented Ball Control Valves for Slurry and Fibrous Media
Segmented V-notch ball control valves for high-capacity throttling of slurry, fibrous media, and viscous fluids. V-notch ball profile provides shearing action and characterised flow profile for precise control with 100:1 to 300:1 rangeability. Double-bearing stem support prevents deflection under high differential pressure. Spring-energized PTFE/RPTFE/PEEK or metal/Stellite seat. Pneumatic rack-and-pinion, scotch-yoke, electric, or hydraulic actuator with HART/Fieldbus/Profibus smart digital positioner. ISA S75 / IEC 60534 compliant.
| Parameter | Specification |
|---|---|
| Product Type | Segmented Ball Control Valves |
| Category | Control Valves |
| Size Range | 1" to 24" (DN25 to DN600) |
| Pressure Class | Class 150 / Class 300 / Class 600 per ASME B16.5 |
| End Connections | RF / RTJ flanged per ASME B16.5 or wafer type (on request) |
| Body Material | ASTM A216 WCB / ASTM A351 CF8M (SS316) / ASTM B148 C95800 (NAB, marine) |
| Ball / Segment Material | SS316 with Stellite 6 overlay on V-notch edges / hardened SS440C |
| Seat Material | PTFE / RPTFE / PEEK (soft seat) / SS316 + Stellite (metal seat) -- spring-energized |
| Stem Material | SS316 with anti-blowout design and double-bearing support |
| Packing | Graphite braided with live-loading (high temp) / PTFE V-ring (standard) / bellows seal (zero emissions, on request) |
| Actuator | Pneumatic rack-and-pinion (spring-return or double-acting) / Scotch yoke / Electric motor / Hydraulic |
| Positioner | Smart digital positioner (HART / Fieldbus / Profibus) with auto-tuning and valve diagnostics |
| Face-to-Face | ISA S75.08 / IEC 60534-3-2 (rotary) or ASME B16.10 |
| Flow Characteristic | Equal percentage (V-notch standard) -- modified linear or quick-opening available |
| Rangeability | 100:1 (standard V-notch segmented ball) -- up to 300:1 with characterised V-notch profile |
| Leakage Class | ANSI/FCI 70-2 Class IV (metal seat) -- Class VI (soft seat) -- bubble-tight |
| Temperature Range | -29 deg C to +200 deg C (PTFE seat) -- up to +260 deg C (PEEK) -- up to +540 deg C (metal/Stellite seat) |
| Component | Material |
|---|---|
| Carbon Steel | ASTM A216 WCB body (standard industrial) |
| Stainless Steel | ASTM A351 CF8M (SS316) body, ball, and trim (corrosive service) |
| Nickel-Aluminium-Bronze | ASTM B148 C95800 (NAB) body and ball (marine / seawater) |
| Ball Overlay | Stellite 6 on SS316 V-notch edges for shearing and erosion resistance |
| Seat Options | PTFE (standard), RPTFE (reinforced), PEEK (high temp), SS316 + Stellite (metal seat, fire-safe) |
| Test | Requirement |
|---|---|
| Testing | Hydrostatic shell test 1.5 x WP per API 598 / EN 12266-1; Seat leakage test per API 598 / EN 12266-1; Functional test -- full stroke, torque; Material certificates per EN 10204 3.1 |
| Certification | ISO 9001:2015 QMS, EN 10204 3.1 material certificates, hydrostatic and seat test reports |
| Standard | Description |
|---|---|
| Design Standard | ISA S75.01 / IEC 60534 Industrial-Process Control Valves, ASME B16.34, API 598 |