Precision-engineered through high-pressure forging, these ball valves feature a refined grain flow that ensures maximum structural integrity. Optimized for critical environments, they reliably sustain operating pressures up to 10,000 PSI and temperatures exceeding 538°C (1000°F). By strictly adhering to ASME B16.34 standards, the forging process increases tensile strength by approximately 30% compared to cast alternatives, providing superior fatigue resistance and zero-leakage performance under intense mechanical stress.
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Design Features
• API 6D pipeline valves engineered for ASME pressure ratings from Class 150 to 2500.
• Full-bore and reduced-bore configurations available across NPS sizes from 2” to 60”.
• Optional Double Block and Bleed (DBB) functionality verified by API 6D hydrostatic testing.
• Fire-safe certified according to the latest BS 6755, API 6FA, and API 607 standards.
• Versatile seat designs featuring Single Piston (SPE) or Double Piston (DPE) for bidirectional isolation.
• Sealing materials including RPTFE, PEEK, and Viton GLT to suit specific media and pressures.
• Seamless integration with ISO 5211 compliant pneumatic, hydraulic, or electric actuation.
• Integrated emergency secondary sealing via grease injection ports rated for full system pressure.
• Metal-to-metal sealing meeting ISO 5208 Rate A zero-leakage requirements for all ASME classes.
• Optional fully welded body construction compliant with ISO 15848-1 fugitive emission standards.
• Standardized with blow-out proof stems and antistatic devices ensuring electrical continuity < 10 ohms.
• Specialized executions for extreme Cryogenic (-196°C) or High-Temperature (+538°C)serviceconditions.
Floating Ball / Trunnion Mounted Ball
Forged ball valves are engineered in Floating and Trunnion Mounted configurations to meet specific API 6D operational requirements. The Floating Ball design utilizes upstream pressure to achieve a bubble-tight downstream seal, optimized for NPS 1/2″–6″ and ratings up to ASME Class 600. This seat-supported architecture provides a cost-effective, space-saving solution for bi-directional shut-off in process piping.
For heavy-duty service (NPS 2″–56″, Class 150–2500), the Trunnion Mounted design employs a fixed-ball, bearing-supported structure that reduces operating torque by 30%–45% compared to floating types. This ensures superior sealing integrity and structural stability under high-differential pressures in midstream and subsea environments. CARILO’s forged valves, machined from ASTM A105 or F316 with tolerances within ±0.01mm, undergo 100% API 598 pressure testing. By adhering to ISO 9001 standards, we extend MTBF by approximately 25% in high-cycle, critical-service applications.
The Number of Body Pieces- TWO/ THREE
Soft seated / Metal seated
The types of end connection - RF/RTJ/SW/BW/NPT
RF (Raised Face):
Engineered per ASME B16.5 with a standard 125-250 AARH serrated finish to optimize gasket compression. This flanged connection ensures secure sealing and precise alignment across ASME Class 150–2500 applications.
RTJ (Ring Type Joint):
Specialized for high-pressure service (Class 900 and above), utilizing ASME B16.20 metallic ring gaskets. The metal-to-metal interface provides superior sealing integrity under extreme thermal and mechanical stresses.
SW (Socket Weld):
Manufactured to ASME B16.11 for small-bore piping (NPS 2 and below). This configuration offers high joint strength and fatigue resistance, ideal for high-pressure process lines requiring leak-proof permanent joints.
BW (Butt Weld):
Designed according to ASME B16.25 for seamless pipeline integration. It ensures zero-leakage performance and is fully compatible with Radiographic Testing (RT) to verify weld quality in critical service.
NPT (National Pipe Thread):
Tapered thread connections per ASME B1.20.1 for rapid, cost-effective assembly. Primarily utilized in auxiliary utility systems and low-pressure applications requiring compact, threaded joints.
Different Design - DBB/ DIB-1/ DIB-2
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Most Popular Questions
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Forged valves per ASME B16.34 feature a refined, void-free grain structure that maximizes tensile strength and fatigue resistance. They are engineered for high-pressure service up to 6,000 PSI, offering superior structural integrity compared to cast alternatives.
Floating designs (NPS 1/2" to 6") use line pressure for bubble-tight sealing in Class 600 applications. Trunnion valves (up to Class 2500) utilize a fixed-ball architecture to reduce operating torque by 30%, ideal for high-pressure, large-diameter pipelines.
2-piece valves minimize leak paths in high-pressure service. Conversely, 3-piece "swing-out" designs allow for in-line seat and seal replacement without disconnecting end caps, reducing maintenance downtime by 50% and optimizing Total Cost of Ownership (TCO).
Soft seats (PTFE/PEEK) provide ANSI Class VI sealing up to 200°C. For abrasive media or extreme temperatures exceeding 550°C (1022°F), Metal-Seated valves with Tungsten Carbide (TCC) coatings are mandatory to ensure high-cycle reliability and erosion resistance.
Per API 6D, DIB-1 uses dual DPE seats for redundant bidirectional sealing but requires an external relief valve. DIB-2 combines one SPE and one DPE seat to allow automatic internal cavity relief, eliminating the need for external relief piping.
For Class 900+ service, RTJ (ASME B16.20) provides a robust metal-to-metal seal. For permanent, zero-leakage integration, Butt Weld (BW) ends per ASME B16.25 are preferred, as they support Radiographic Testing (RT) to verify joint integrity.
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