An improved hydraulic coupler suitable for interconnecting subsea fluid lines is provided with a highly reliable metallic seal between the male and female portions. A C-shaped metallic seal is radially compressed between the female and male coupler bodies, so that axial movement between these bodies does not effect sealing effectiveness. A floating retainer ring housed within the retrievable female body by a fixed retainer ring allows for radial misalignment between the coupling halves. The floating retainer ring thus becomes centered with respect to the male coupling body, while a metallic face seal provides sealing engagement between the floating and fixed retainers. Both axial and radial deviation between the coupling bodies is thus permissible, and the coupling can reliably seal fluid after repeated coupling and uncoupling operations.

Hydraulic coupling is a device for transmitting rotation between shafts by means of the acceleration and deceleration of a fluid such as oil. It is also known as fluid coupling. Hydraulic couplings are used to mount the engine to pump. In a hydraulic coupling, pair of forces of equal magnitude is exerted in parallel but opposite directions and cause rotation. The working technology of the hydraulic couplings ensures a long working life with lower operating cost and long lasting leak-tightness. They have synthetic rubber inserts between the coupling halves. The high performance hydraulic coupling features are applicable to all range of hydraulic equipment & in the transmission market. Hydraulic couplings provide a soft start with gradual acceleration and limited maximum torque for fixed operating speeds. They are typically used in applications that undergo torsional shock from sudden changes in equipment loads.

Hydraulic cutterhead has lifting handles on larger models for easy transport. It is ideal for use with most pumps featuring 3-way valve or dump valve. It has single-acting spring return. The opening head provides position cutter.