CE DN50 CL1500 F316 Top-Entry Butt-Weld Trunnion Mounted Cryogenic Ball Valve

I. Product Overview

II. Key Attribute Parameters

• Size: DN50 (2″), optimized for medium-diameter pipeline flow control in high-pressure, cryogenic environments.
• Pressure Rating: CL1500 (26.0MPa), engineered to withstand intense pressure in oil & gas transmission, refinery, and high-pressure process systems.
• Temperature Range: -46°C to 80°C (matching cryogenic service needs, suitable for media like LNG, liquid nitrogen).
• Material Configuration:
  • Body: LF2 (ASTM A350), a low-temperature carbon steel variant, delivering high toughness to resist brittle fracture in cold operating conditions.
  • Trim: F316 stainless steel (ASTM A182), providing excellent corrosion resistance against chloride, sulfide, and acidic media common in industrial processes.
  • Seats: DEVLON (high-strength polymer) or RPTFE (filled PTFE), selected for low-temperature resilience, chemical resistance, and tight sealing performance.
• End Connections: Butt-weld (BW per ASME B16.25), ensuring a leak-tight, high-integrity connection in high-pressure, high-temperature pipelines.
• Actuation: Manual gear-operated (handwheel), enabling precise torque control for smooth operation in hazardous or hard-to-reach installations.
• Certifications: CE, validating compliance with EU pressure equipment directives, reducing regulatory hurdles for global projects.

III. Structural Features

• Top-Entry Design: Internal components (ball, seats, stem) are accessible via a removable bonnet, facilitating in-line maintenance. This cuts maintenance downtime by up to 50% compared to fully disassembled valves, critical for continuous-process industries like petrochemical refining.
• Trunnion-Mounted Ball: The ball is supported by trunnions (F316) at the top and bottom, effectively distributing pressure loads. This design eliminates ball “floating,” reducing seat wear and ensuring stable, reliable sealing even under high differential pressure (up to CL1500).
• Cryogenic Seal Compatibility:
  • DEVLON seats: Engineered polymer with low friction properties, maintaining elasticity at -46°C, making it ideal for cryogenic liquid applications (e.g., LNG, liquid CO₂).
  • RPTFE seats: Filled PTFE compound resists chemical attack, achieving ANSI/FCI Class VI leakage (≤0.1 bubbles/min) to prevent leaks of toxic or flammable media.
• Butt-Weld Ends: Full-penetration weld joints (per ASME B31.3) ensure zero leakage in high-pressure, high-temperature systems. Weld ends are prepped for automatic welding, minimizing field installation errors and enhancing joint integrity.
• Anti-Blowout Stem: An integral stem design with a retention shoulder prevents stem ejection under pressure, boosting operator safety in high-risk applications such as gas transmission.