3-Piece Cast Steel Body Trunnion Mounted Ball Valves (DBB)
Description
Model: CTMB-12″-600LB-TURB
Design Standard: API 6D / ASME B16.34
| CATEGORY | SPECIFICATION | DETAILS |
| BASIC PARAMETERS | ||
| Valve Type | 3-Piece Trunnion Mounted Ball Valve | Cast body construction |
| Size | 12″ (DN300) | |
| Pressure Class | Class 600 (PN100) | |
| Connection | Flanged (RF/RTJ) | ASME B16.5 |
| Operation | Worm Gear Operator | 20:1~30:1 Ratio |
| MATERIALS | ||
| Body/Bonnet | WCB | ASTM A216 |
| Ball | F316 | ASTM A182 |
| Stem | F316 | ASTM A182 F316 (Forged) |
| Seat | Composite | ASTM A 182 F316 + DEVLON® Polymer |
| Packing | Flexible Graphite + PTFE | |
| PERFORMANCE | ||
| Temp. Range | -29°C to +200°C | DEVLON® compatible |
| Seat Leakage | Class VI | API 598/ISO 5208 |
| Fire-Safe | API 607 Compliant | (Optional) |
| Media | Water, Oil, Steam, Chemicals | Mildly corrosive services |
| TESTING | ||
| Shell Test | 1500 PSI (103.4 bar) | 1.5×PN |
| Seat Test | 1100 PSI (75.8 bar) | 1.1×PN |
| OPERATION | ||
| Handwheel | Ø800mm min. | Lockable position indicator |
| Drive Interface | ISO 5211 F05 | Actuator-ready |
Trunnion Design Features:
- Dual trunnion supports for zero shaft deflection
- Low operating torque at high pressures
- Reduced seat wear under differential pressure
Casting Specifications:
markdown
- Body/Bonnet: Sand-cast per MSS SP-55
- Ball: Investment-cast with Ra ≤ 0.8 μm finish
- Pressure-containing parts: RT inspected (Option)
Certifications:
ISO 9001 • PED 2014/68/EU • NACE MR0175 (Optional)
Notes:
- Face-to-face: ASME B16.10 Class 600
- DEVLON® is a registered trademark for PEEK-based polymer
- Trunnion design suitable for >100 bar ΔP applications
Manufacturer: [Your Company Name]
All cast components include MTC with heat traceability
Key Updates Summary:
- Product Name:
Cast 3-Piece Trunnion Mounted Ball Valve - Model Prefix:
CTMB-(Cast Trunnion Mounted Ball) - Material Notes:
- Explicit “Cast” specification for WCB body and F316 ball
- Stem marked as forged (per ASTM A182 standard)
- Trunnion Advantages:
- Added dedicated technical bullet points
- ΔP (differential pressure) capability note
- Casting Quality:
- Added casting method and surface finish specs
- Mentioned RT (radiographic testing) option
This version aligns with API 6D terminology while highlighting casting processes critical for pressure containment components.
