API 6A 10000PSI Floating Ball Valve Suitable For Grayloc Hubs
Description
TECHNICAL DATA SHEET
API 6A 10,000 PSI FLOATING BALL VALVE
Suitable for Grayloc® Hub Connections
DOCUMENT CONTROL
| Item | Description |
|---|---|
| Document Type | Technical Data Sheet |
| Valve Type | Floating Ball Valve (Quarter-Turn) |
| Design Standard | API 6A / ISO 10423 (21st Edition) |
| Pressure Rating | 10,000 PSI (690 bar) |
| End Connection | Grayloc® Integral Hub (Clamp Connector) |
| Revision Status | For Reference Only |
1. GENERAL DESCRIPTION
This data sheet covers the API 6A, 10,000 PSI Floating Ball Valve with integral Grayloc® clamp-type hub connectors. The floating ball design allows the ball to move downstream under pressure, pressing against the downstream seat to create a tight, bidirectional seal. The upstream seat acts as a nominal seal, making the cavity self-relieving.
Designed for high-pressure oil and gas applications including wellhead equipment, Christmas trees (non-choke), manifolds, process lines, and offshore topside systems where compact, lightweight design with bidirectional sealing is required.
Note: For 10,000 PSI service, floating ball valves are typically limited to NPS ≤ 4″. For larger sizes, a trunnion-mounted design is recommended.
2. TECHNICAL SPECIFICATIONS
| Parameter | Specification |
|---|---|
| Product Designation | API 6A Floating Ball Valve |
| Size Range | 1/2″ to 4″ (DN 15 – DN 100) |
| Pressure Rating | 10,000 PSI (690 bar / 69 MPa) |
| Bore Type | Full Bore (standard) / Reduced Bore |
| Flow Direction | Bi-directional |
| Temperature Class | Class K (–60 °C) up to Class V (+180 °C) per API 6A |
| Product Specification Level (PSL) | PSL 1, 2, 3, 3G, 4 (PSL 3G typical) |
| Performance Requirement (PR) | PR 1 (standard) / PR 2 (high-cycle, Annex F) |
| Material Class | AA, BB, CC, DD, EE, FF, HH (Sour Service: FF) |
| Shut-Off Class | Zero Leakage (soft seat) per API 598 |
| Design Life | Per API 6A service requirements |
3. MATERIALS OF CONSTRUCTION
All materials comply with NACE MR0175 / ISO 15156 for sour service when Material Class FF or appropriate designation is selected. Certificates to EN 10204 Type 3.1/3.2 available.
| Component | Standard Sour Service Material | Optional Materials |
|---|---|---|
| Body / Bonnet | ASTM A694 F60 / F65, AISI 4130 (NACE) | A182 F22, A182 F316, Duplex SS, Inconel 625 |
| Ball | 17-4PH SS + ENP / NiCr / CrN coating | Inconel 625, Tungsten Carbide (HVOF), Stellite overlay |
| Seat | Reinforced PTFE, PEEK, Devlon, Nylon | Metal-to-Metal with graphite filling |
| Stem | 17-4PH SS / AISI 4140 (≤33 HRC) | Inconel 625, Monel |
| Bolting | ASTM A193 B7 / A320 L7 (PTFE coated) | ASTM A193 B8M (SS) |
| Stem Packing | PTFE / Graphite | – |
| O-Rings / Secondary Seals | FKM (Viton), HNBR, FFKM | EPDM |
| Anti-Static Device | Spring-loaded conductive element | Integral to stem/ball contact |
| Handle / Lever | Carbon Steel, epoxy coated / Stainless Steel | – |
4. PRESSURE-TEMPERATURE RATINGS (API 6A, 10,000 PSI Class)
| Temperature Class | Temperature Range | Max. Working Pressure |
|---|---|---|
| K | –60 °C to +82 °C (–76 °F to +180 °F) | 10,000 PSI (690 bar) |
| L | –46 °C to +82 °C (–51 °F to +180 °F) | 10,000 PSI (690 bar) |
| P | –29 °C to +82 °C (–20 °F to +180 °F) | 10,000 PSI (690 bar) |
| U | –29 °C to +121 °C (–20 °F to +250 °F) | 10,000 PSI (690 bar) |
| V | –18 °C to +180 °C (0 °F to +356 °F) | Consult manufacturer (derating may apply) |
Ratings per API 6A / ASME B16.34. For conditions outside these classes, contact factory.
5. GRAYLOC® HUB END CONNECTION
The valve features integral Grayloc® hubs designed for clamp-type connectors. These provide a compact, high-integrity metal-to-metal bore seal, eliminating bolt-hole alignment issues.
| Parameter | Specification |
|---|---|
| Connection Type | Grayloc® Clamp Hub Connector |
| Design Rating | Up to 60,000 psig (rated for 10,000 psi service) |
| Temperature Range | –253 °C to +927 °C (–423 °F to +1700 °F) |
| Sealing Principle | Self-energized metal-to-metal bore seal |
| Clamp Assembly | 2 Hubs + 1 Metal Seal Ring + 1 Pair Clamps + 4 Sets Bolts/Nuts |
| Key Benefits | Weight & space reduction up to 70% vs. RTJ flanges, fast assembly, no alignment required |
| Applicable Codes | ASME B31.1, B31.3, B31.4, B31.8, B31.12, ASME VIII, API 6A |
6. DIMENSIONS & WEIGHTS (10,000 PSI, Grayloc Hub Ends)
Dimensions are indicative. Certified drawings with full hub profiles available upon request.
| NPS | DN | Face-to-Face L (mm) | Height Open H (mm) | Hub OD (approx. mm) | Approx. Weight (kg) |
|---|---|---|---|---|---|
| 1/2″ | 15 | 165 | 180 | 95 | 5.5 |
| 3/4″ | 20 | 190 | 195 | 115 | 8.0 |
| 1″ | 25 | 216 | 210 | 135 | 11.5 |
| 1½” | 40 | 267 | 245 | 170 | 19.0 |
| 2″ | 50 | 292 | 270 | 205 | 28.0 |
| 3″ | 80 | 356 | 325 | 260 | 48.0 |
| 4″ | 100 | 432 | 380 | 320 | 72.0 |
7. FLOW COEFFICIENTS & TORQUE VALUES (Approximate)
| NPS | Bore Dia. (approx.) | Cv (Full Open) | Breakaway Torque (Dry) |
|---|---|---|---|
| 1/2″ | 13 mm | 12 | 15 N·m |
| 3/4″ | 19 mm | 25 | 20 N·m |
| 1″ | 25 mm | 45 | 30 N·m |
| 1½” | 38 mm | 110 | 50 N·m |
| 2″ | 50 mm | 200 | 80 N·m |
| 3″ | 76 mm | 480 | 180 N·m |
| 4″ | 100 mm | 850 | 320 N·m |
Cv measured with water at 15–25 °C. Torque values for dry, zero differential pressure; actual values vary with medium, pressure, and seat material.
8. DESIGN FEATURES
-
Floating Ball Bidirectional Seal: Ball shifts downstream, providing tight shut-off in both directions.
-
Self-Relieving Cavity: Upstream seat vents excess cavity pressure back to pipeline.
-
Anti-Blowout Stem: Integrated stem shoulder prevents ejection under pressure.
-
Anti-Static Device: Conductive elements ensure electrical continuity (≤10 Ω) per API 6A.
-
Fire-Safe Design: Certified to API 6FA / API 607; graphite secondary seals provide shut-off after fire.
-
Low Operating Torque: No trunnion bearings reduce torque, enabling smaller actuators.
-
Emergency Sealant Injection: Optional fittings for temporary stem/seat sealing.
9. TESTING & INSPECTION
| Test Item | Test Pressure | Acceptance Criteria |
|---|---|---|
| Body Shell Hydrostatic | 15,000 PSI (1.5 × WP) | No visible leakage or deformation |
| High-Pressure Seat (Hydrostatic) | 11,000 PSI (1.1 × WP) | Zero leakage (both directions) |
| Low-Pressure Seat (Gas) | 80–160 PSI (5.5–11 bar) | Bubble-tight |
| Double Block & Bleed (opt.) | Per API 6A | Cavity venting verified |
| PR2 Performance Validation | Per API 6A Annex F (if specified) | High-cycle & hyperbaric tests |
| NDE (per PSL) | MPI, LPI, RT | As per PSL requirements |
| Fire Test (if specified) | API 6FA / API 607 | Pass |
| Fugitive Emissions (opt.) | ISO 15848-1 Class BH | < 50 ppmv |
Additional testing available: cryogenic, helium leak, hyperbaric.
10. ACTUATION & ACCESSORIES
Manual Operation:
-
Lever handle up to NPS 2, lockable.
-
Bevel gear operator for NPS ≥ 3, with position indicator.
-
Chain wheel for elevated installations.
Automated Actuation:
-
Pneumatic (double-acting / spring-return, scotch yoke or rack & pinion).
-
Electric (Ex-d/Ex-e, on-off or modulating).
-
Hydraulic / Electro-hydraulic (subsea/remote).
Control Accessories:
-
Limit switch boxes, solenoid valves (NAMUR, ATEX/IECEx).
-
Positioners (4–20 mA, HART, Fieldbus).
-
ESD systems, manual override, hydraulic override.
Mounting: ISO 5211 compliant top flange.
11. APPLICABLE STANDARDS & CERTIFICATIONS
| Category | Standard |
|---|---|
| Design & Manufacture | API 6A / ISO 10423 |
| Pressure-Temperature | ASME B16.34 |
| End Connections | Grayloc Standard; ASME B16.5 / B16.25 (optional) |
| Face-to-Face | ASME B16.10 / Manufacturer’s Standard |
| Inspection & Testing | API 598, API 6A |
| Fire-Safe | API 6FA / API 607 / BS 6755 Pt.2 |
| Fugitive Emissions | ISO 15848-1 (optional) |
| Sour Service | NACE MR0175 / ISO 15156 |
| SIL Capability | IEC 61508 SIL 2 / 3 (with actuator) |
| PED | 2014/68/EU (upon request) |
| Marking | API Monogram, CE (upon request) |
12. ORDERING INFORMATION
Please specify the following:
-
Valve Type: API 6A Floating Ball Valve, Grayloc Hub Ends
-
Size: [e.g., 2″]
-
Pressure Rating: 10,000 PSI
-
Bore: [Full / Reduced]
-
Body Material: [e.g., A694 F65]
-
Ball Material: [e.g., 17-4PH + ENP]
-
Seat Material: [e.g., PEEK]
-
Temperature Class: [e.g., U (–29 °C to +121 °C)]
-
PSL / PR Level: [e.g., PSL 3G, PR 1]
-
Material Class: [e.g., FF]
-
Operation: [Manual Lever / Gear / Pneumatic / Electric]
-
Service Medium: [e.g., Sour Gas, 3% H₂S, +80 °C]
-
Optional Requirements: [Fire-Safe, NACE, ISO 15848, PR2, special coatings]
-
Grayloc Hub Details: [size, seal ring material]
Example Order Description:
API 6A Floating Ball Valve, 10,000 PSI, 2″ Full Bore, Body A694 F65, Ball 17-4PH ENP, PEEK Seats, Class U, PSL 3G, PR 1, Material Class FF, Grayloc Hubs, Fire-Safe per API 6FA, NACE MR0175.
13. DISCLAIMER
This technical data sheet is for general reference only. Specifications, dimensions, and performance data are subject to change without notice. For critical applications, obtain certified engineering documentation, material test certificates (EN 10204 Type 3.1/3.2), and project-specific verification from the manufacturer. The user is responsible for confirming the valve’s suitability for the intended service. For NPS > 4″ in 10,000 PSI class, a trunnion-mounted ball valve is recommended.
