With the introduction of the 5K, 10K and 15K Vector SPO® Compact Flange standards, Freudenberg Oil & Gas Technologies (FO>) now offers a comprehensive range of bolted pipeline connectors for all recognized subsea piping applications.
These additions to the already extensive Vector SPO® range ensure that FO> is more than capable of meeting the diverse requirements of all our clients.
The SPO-S CF range offers an alternative that engineers have been waiting for and represents the ideal choice on an even greater variety of subsea applications.
The HX profile seal ring, a bi-directional seal ring recommended for use with SPO® Compact Flanges for subsea piping applications, is an elastic seal ring which is energized by the deformation of the seal flanges towards the seal centre line.
This deformation is governed by the groove and seal geometries. In addition, the seal will become pressure energized when subjected to either internal line pressure or external hyperbaric pressure.
The shape and design of the HX profile seat and seal ring arrangement is ideal for flange alignment and can also compensate for flange misalignment.
Primary seal : HX seal ring arrangement – A metal to metal bi-directional interference fit seal ring, sealing on 4 areas, qualified for water depths up to and including 10,000 feet.
Secondary seal : Heel seal – A proven gas tight seal that protects the primary sealing mechanism, the HX seal ring arrangement, from corrosion arising from direct contact with the production medium.
Environmental seal : A non-pressure carrying seal which prevents the circulation of seawater into the flange bolt circle, therefore, eliminating the potential for corrosion arising post installation.
Available in nominal pipe sizes from ½” NPS through to 24”NPS for pressure classes 5K, 7.5K, 10K and 15K, SPO-S CF swivel ring flange assemblies are ideal for dynamic load applications such as flexible risers and subsea tie-in spools, guaranteeing no fatigue issues, whilst also meeting with the design and functional code requirements of both DNV-OS-F201 Section 6 and ISO 13628-7.
Unlike API17D swivel ring assemblies, SPO-S CF swivel ring assemblies have reliable, readily available, external load capacities which are calculated at approximately 66% flange utilization, to help assist simplify the flange selection process.
SPO-S CF swivel ring flanges also adhere to lower minimum material strength requirements than API 6A / API 17D flanges, achieving 10K pressure rating for 52ksi yield strength materials and 15K pressure rating for 60ksi yield strength materials.