Vector SPO-S Compact Flange
The proven new standard in Compact sealing technology delivering weight and space advantages while ensuring absolute integrity for all critical mechanical joints.
The Vector SPO® Compact Flange has been used across the globe since 1989, offshore, onshore and subsea, offering significant weight and space savings over conventional flanges, and therefore is the most effective environmentally friendly piping joint available today. Its double sealing action prevents hydrocarbon releases, addressing health and safety issues and concerns. Typically weighing between 70% and 80% less than a conventional flange, the Vector SPO® Compact Flange is designed using state-of-the-art finite element analysis and is in full accordance with ASME VIII, Div 2 provisions and is in full acceptance with ANSI/ASME B31.3.
Benefits:
- High pressure flanges for subsea ASME B31.3 piping systems
SPO Compact Flanges are designed to suit standard ASME B36.10M nominal pipe size’s, therefore, eliminating the necessity to incorporate tapers through the length of the flange to match bore the corresponding pipe. - Flush bore
Reducing the likelihood of flow disturbance / flow irregularities whilst also offering ideal conditions for your pigging processes, a requirement of DNV-OS-F201. - Exceptional fatigue characteristics
SPO Compact Flanges possess superior fatigue properties than both API and ASME flanges. Finite Element Analysis (FEA) testing confirms that the SPO compact flange fatigue properties exceed those of the weld adjoining the corresponding pipe. - Static bolted pipeline connection
Loads are transferred via metal-to-metal contact points between the flange faces so as to completely eliminate the potential for movement between the assembled SPO Compact Flanges whilst under dynamic loading. - High integrity sealing
SPO Compact Flanges incorporate two independent metal to metal sealing mechanisms. The seal ring is a non-load carrying seal which is unaffected by flanges loads, a requirement of DNV-OS-F201. - Limited leakage probability
SPO Compact Flanges possess equivalent integrity to a girth welded pipe joint from a leakage probability perspective. - Swivel ring flanges
SPO Compact Flanges are DNV type approval qualified and available in swivel design for all sizes listed within each pressure class. - Reduced size and weight envelope
SPO Compact Flanges are both smaller and lighter than conventional API and ASME flanges, including swivel ring flanges. Up to 82% lighter and 60% smaller than a comparable ASME or API flange!






