VectoGray EXF
Excellent bending and tensile load capabilities

The H - 4 line of connectors has reliable, simple operating characteristics; excellent bending and tensile load capabilities; and a long, economical service life.

Design Philosophy

The H - 4 connector is a hydraulically operated subsea connector. It connects onto a subsea wellhead profile by dog segments engaged by a cam ring. The connector ensures positive engagement and release using a primary and secondary system. Combined use of the systems produces a releasing force 125% greater than the locking force.

Applications

  • BOP stack to wellhead
  • LMRP to BOP stack
  • Completion tree to wellhead
  • TLP/subsea template tieback
  • Production riser assembly to subsea manifold
  • Single point mooring to anchor base
  • Caisson completions and artificial island drilling
  • Specially adapted applications

Product Characteristics & Benefits

  • Optional upper body configurations
  • Easy primary seal replacement
  • Seal is ROV replaceable and retrievable
  • Visual position indicator rod
  • Pressure-tight self-energizing seal
  • Primary and secondary hydraulic circuits
  • Positive mechanical release
Technical specifications: ExF H - 4
Based on connection with MS-700 Measurement
Bending load capacity 3.1 MM ft-lbs
Preload 2.51 MM lbs
Hydraulic circuits 12
Lock fluid volume 4.14 US Gal
Unlock fluid volume 5.16 US Gal
Outside diameter 51.5 in
Weight 14,200 lbs
Swallow 27.5 in
Max. service pressure 15,000 psi
Max. hyd. oper. pressure 3,000 psi

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