Designed to perform under volatile pressure and temperature conditions, the Type 8628VL leverages spiral groove non-contacting technology to deliver exceptional reliability, operational efficiency, and environmental compliance.
Solving The Multiphase Challenge In Pipeline Infrastructure
Ethane pipelines present unique challenges due to frequent fluid phases shifting from liquid to vapour to supercritical, which can compromise conventional seal performance. The Type 8628VL addresses this by employing dual non-contacting seal faces in a tandem configuration, validated by peer-reviewed research.
Initial Field Installations on The U.S. Gulf Coast
A leading ethane transmission company operating along the U.S. Gulf Coast faced major challenges with sealing during pressure variations. The operator installed four Type 8628VL seals on ethane pump equipment, with results showing low leakage, zero failures, and improved uptime.
Key Benefits of the Type 8628VL
- Enhanced reliability with MTBR of up to 48 months
- Efficiency with reduced flush fluid requirements
- Lower operating costs and simplified support systems
- Sustainability gains with elimination of barrier fluids and cooling water
Competitive Differentiation in a Changing Market
Unlike hybrid or contacting seals, the Type 8628VL delivers pure non-contacting operation even during rapid phase transitions. John Crane emphasises this seal as a significant advancement aligned with reliability and energy transition goals.
