III. Product Features

• Multi-Standard Compliance: Conforms to API, ASME, and CE norms, eliminating regulatory barriers in global projects. Compliance with API 6D ensures suitability for pipeline applications, while ASME B16.34 alignment guarantees dimensional compatibility with international systems.

• Worm Gear Precision: The gearbox meets API 6D actuation requirements, reducing operating torque by 50:1 to enable effortless manual operation. Self-locking design prevents backdriving, a critical safety feature for high-pressure systems per CE PED.

• PTFE Seal Performance: PTFE seats achieve API 598 Class VI leakage rates (near-zero leakage), with fire-safe design per API 607 ensuring seal integrity during high-temperature events. This dual functionality meets both environmental and safety standards.

• CF8 Durability: ASME-certified CF8 stainless steel resists pitting, crevice corrosion, and oxidation, exceeding carbon steel performance in coastal, marine, and chemical environments. Passivation treatment enhances the chromium oxide layer, extending service life.

• Flanged Connection Reliability: ASME B16.5 flanges ensure uniform pressure distribution, reducing gasket stress compared to threaded connections. This design minimizes leakage risks in cyclic pressure applications, a key API 6D requirement.

• Full-Port Efficiency: Bore size matches pipeline diameter (per ASME B16.34), minimizing pressure drop and energy loss. This feature is critical for API 6D pipeline systems where flow efficiency directly impacts operational costs.

• Maintenance-Friendly Design: Modular construction allows seal replacement without removing the valve from the line, aligning with API 6D maintenance guidelines. The worm gearbox is factory-lubricated for life, reducing upkeep requirements.

• Material Validation: CF8 stainless steel undergoes spectroscopic analysis to verify chemical composition (per ASME A351), with mechanical testing (tensile, impact) ensuring compliance. PTFE seals are tested for purity and thermal stability to meet API 607 criteria.

• Precision Casting: Investment casting (lost wax process) produces valve bodies with dimensional accuracy (±0.05mm), meeting ASME B16.34 tolerances. Ultrasonic testing detects internal defects, critical for API 6D pressure-containing components.

• CNC Machining: Ball surfaces are ground to Ra ≤0.8μm finish, ensuring proper seating with PTFE seals. Flange faces are machined to ASME B16.5 flatness standards (≤0.1mm/m) for gasket compatibility.

• Assembly and Calibration: Worm gears are hardened and lapped to ensure smooth operation, with torque testing to verify API 6D actuation limits. Seats are compressed to 70% of original thickness to guarantee initial sealing contact.

• Third-Party Certification Testing: Each valve undergoes API 598 testing:

• • Shell test: 1.5×Class pressure (hydrostatic) to validate body integrity.

• • Seat test: 1.1×Class pressure (gas/water) to confirm Class VI leakage rates.

• • Fire test: API 607 compliance verified via 30-minute 750℃ exposure, ensuring post-fire sealing.