Ethylene Transfer Line and Decoking Valves

Designed as critical components for connecting and disconnecting the ethylene cracking furnace from the main pipeline, these valves ensure reliable performance in high-temperature, low-pressure environments. With exceptional anti-coking properties, they enhance system safety and operational reliability, reducing risks associated with ethylene production. The innovative, load-resistant valve body and triple-seal design further optimize safety and durability. Available in diameters up to 48 inches, with over 300 units already delivered.

Product Series

  • Double-disc valve

Certifications

  • Environmental Engineering Design Certification
  • Manufacturing License for Measuring Instruments
  • Pressure Vessel Design Permit
  • Pressure Vessel Manufacturing Permit
  • Special Equipment Manufacturing Permit
  • ISO9001 Quality Management System Certification
  • ASME Boiler and Pressure Vessel Code (BPVC) Certificate

Technical Features

Three-Position Seal

OFF Position: Floating seal with no gap between internal parts, fully isolating the flow path from the valve cavity.

Middle Position: Direct piping with no pressure loss, ensuring optimal flow and system efficiency.

ON Position: Enhanced anti-coking performance, maintaining uninterrupted operation.

Optimized Design for Durability

Split Seat & Integrated Stem: Simplified manufacturing and maintenance processes for increased efficiency.

Reinforced Valve Body: Improved load resistance and sealing performance through a higher rigidity design.

Disc Spring Package: Three-wave design and disc springs ensure improved sealing under varying conditions.

Advanced Sealing & Anti-Coking Technology

Bidirectional Sealing: Offers additional protection against leakage in both directions.

Adjustable Deflector Hole: Prevents seal coking, ensuring smooth operation over time.

Cam Linkage Mechanism: Minimizes linkage failure risks, improving reliability during valve operation.

Applications

  • Zhongyuan Ethylene – 20″ + 6″ linkage valve
  • Wuhan Ethylene – 32″ pneumatic valve
  • Huizhou Ethylene – 36″, 24″ valves
  • Wanhua Chemical Group – 24″ decoking valve