Top Entry Ball Valve -- API 6D SS316
Technical Datasheet -- Top-Entry Ball Valves for In-Line Maintenance
Document No.SV-DATA-TEBV-001
RevisionA
DateMay 2026
ManufacturerSupreme Valves India, Ahmedabad, Gujarat, India
Top-entry ball valves for in-line maintenance without removing the valve from the pipeline. Single-piece forged or cast body with removable bolted bonnet cover allows access to ball, seats, stem, and seals while the valve remains installed and the pipeline remains in service. API 6D / API 608 / ASME B16.34 compliant. Full bore or reduced bore. SS316 or WCB body with spring-loaded PTFE/RPTFE/PEEK seats. Fire-safe per API 607 / ISO 10497. Lever, gear, or actuator operated.
Technical Specifications
| Parameter | Specification |
|---|
| Product Type | Top Entry Ball Valves |
| Category | Ball Valves |
| Size Range | 2" to 24" (DN50 to DN600) |
| Pressure Class | Class 150 / Class 300 / Class 600 / Class 900 / Class 1500 per ASME B16.5 |
| End Connections | RF / RTJ flanged per ASME B16.5 or butt-weld per ASME B16.25 |
| Body Material | ASTM A351 CF8M (SS316) / ASTM A216 WCB / ASTM A217 WC6 (high temp) / ASTM A352 LCC (low temp) |
| Ball Material | SS316 with ENP or chrome plating / solid SS316 |
| Seat Material | PTFE / RPTFE / PEEK / Devlon / SS316 + graphite (fire-safe) / Stellite (metal seat, on request) |
| Stem Material | SS316 with anti-blowout design and extended bonnet option |
| Bonnet Type | Top-entry bolted bonnet cover -- removable for in-line access to internal components |
| Bore | Full bore (FB) or reduced bore (RB) per API 6D |
| Operation | Lever with locking device (up to 6 inch) / Gear operator (8 inch and above) / Pneumatic / Electric / Hydraulic actuator |
| Leakage Class | API 598 / EN 12266-1 Class A -- zero visible leakage for soft seats |
| Fire Safe | API 607 / ISO 10497 -- secondary metal/graphite seat maintains shutoff after fire exposure |
| Temperature Range | -50 deg C to +200 deg C (PTFE seats) -- up to +260 deg C (PEEK) -- up to +540 deg C (metal/Stellite seat) |
Materials of Construction
| Component | Material |
|---|
| Stainless Steel | ASTM A351 CF8M (SS316) body, ball, stem, and seat (standard corrosive service) |
| Carbon Steel | ASTM A216 WCB body (standard industrial, non-corrosive) |
| Alloy Steel | ASTM A217 WC6, WC9 (high temperature > 425 deg C) |
| Low Temperature | ASTM A352 LCC (down to -46 deg C) |
| Seats | PTFE, RPTFE, PEEK, Devlon V-API, SS316 + graphite (fire-safe), Stellite (metal seat) |
Testing & Inspection
| 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 |
Applicable Standards
| Standard | Description |
|---|
| Design Standard | API 6D Pipeline Valves, API 608, ISO 17292, ASME B16.34 |
Notes
- Bore type (full bore FB or reduced bore RB), pressure class, and end connection must be specified by the purchaser.
- For in-line maintenance capability, ensure adequate overhead clearance above the valve for bonnet cover removal and seat replacement.
- For sour gas service (H2S > 50 ppm), material upgrade to NACE MR0175 compliant SS316L or duplex SS is required.
- For cryogenic service (below -50 deg C), extended bonnet, cryogenic packing, and low-temperature materials (ASTM A352 LCC) are required.
- All valves are manufactured by Supreme Valves India as per our standard specifications.
