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Technical Datasheet -- Three-Piece Ball Valves for In-Line Maintenance
Three-piece ball valves for in-line maintenance without removing the valve from the pipeline. Body consists of two end pieces and a central section -- the centre can be removed for ball, seat, and stem servicing while the end connections remain in the pipeline. Threaded NPT/BSP, socket weld, butt weld, or tri-clamp ends. SS316 investment cast or barstock body. Full bore with PTFE/RPTFE/PEEK seats. Bubble-tight shutoff per API 598 Class A. Anti-blowout stem. ISO 5211 direct mount pad for actuators. API 608 / ISO 17292 / BS EN ISO 5211 compliant.
| Parameter | Specification |
|---|---|
| Product Type | 3-Piece Ball Valves |
| Category | Ball Valves |
| Size Range | 1/4" to 4" (DN8 to DN100) |
| Pressure Rating | 1000 WOG / 2000 WOG / PN16 / PN40 / Class 150 / Class 300 |
| End Connections | Threaded NPT / BSP (1/4" to 4"), Socket weld per ASME B16.11 (1/4" to 2"), Butt weld per ASME B16.25 (1/2" to 4"), Tri-clamp (sanitary, 1/2" to 4", on request) |
| Body Material | ASTM A351 CF8M (SS316) investment cast or barstock / ASTM A216 WCB (carbon steel, on request) |
| End Piece Material | ASTM A351 CF8M (SS316) / ASTM A182 F316 (forged, high pressure) / ASTM A216 WCB (on request) |
| Centre Body Material | ASTM A351 CF8M (SS316) / ASTM A216 WCB (on request) |
| Ball Material | SS316 solid ball with ENP or chrome plating / SS316 with through-hole for reduced weight |
| Seat Material | PTFE / RPTFE / PEEK / UHMWPE / SS316 + graphite (fire-safe, on request) |
| Stem Material | SS316 with anti-blowout design and double O-ring seal |
| Bore | Full bore (FB) or reduced bore (RB) -- full bore standard for 3-piece design |
| Operation | Locking lever with 90-degree stop (up to 2 inch) / Gear operator (2-1/2 inch and above) / Pneumatic / Electric actuator with ISO 5211 direct mount pad |
| Leakage Class | API 598 / EN 12266-1 Class A -- zero visible leakage for soft seats |
| Temperature Range | -50 deg C to +200 deg C (PTFE seats) -- up to +260 deg C (PEEK) -- up to +540 deg C (graphite/metal seats, on request) |
| Component | Material |
|---|---|
| Stainless Steel | ASTM A351 CF8M (SS316) body, end pieces, centre section, ball, and stem (standard corrosive service) |
| Carbon Steel | ASTM A216 WCB body and end pieces (standard industrial, non-corrosive, on request) |
| Forged Steel | ASTM A182 F316 forged end pieces (high pressure > 2000 WOG, on request) |
| Seats | PTFE (standard), RPTFE (reinforced), PEEK (high temp), UHMWPE (abrasive), SS316 + graphite (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 | API 608 Metal Ball Valves, ISO 17292, BS EN ISO 5211, API 607 (fire-safe option) |