Rise Weld-on Repair Coupling
During subsea operations you can welding using Rise Weld-on Repair Couplings. It is lowered into the sea after being welded to the new substitute extension at the surface. Divers remove the old riser, insert the new fitting over the pipe that has been cut, and then tightens the bolt and screws to required torque which creates a leak-proof seal without the need for welding. Additional clamping and force screws are included in the repair coupling to create a seal for high-pressure pipes and to withstand excessive end-pull.
Details
Available in standard sizes 11 ⁄2″ through 48″.
Special sizes, diameters, pressures and lengths available
standard Buna-N packing
Viton, Silicone and other packings available
– ASTM A106 Gr. C or ASTM A105/A350 Gr. LF2
– Marine epoxy paint for corrosion protection
– NACE MR0175/ISO 15156 compliant materials


