The pressure wave valve(PWV) is an intervention free, open-on-demand, equalising device that can befitted to lock mandrels and bridge plugs to provide a large through-bore once activated. The application of PWV include plug and abandonment workscopes, mew completions and workovers.

With excellent pump through capability, the system functions purely on amechanical hydraulic principle. The internal mechanism operates only when it senses a ‘wave’ of applied pressure i.e. starting from a low pressure range, increasing to an upperpressure, and then returning back to alow pressure. This sequence counts as one ‘wave’. By repeating this sequence several times to the pre-set values, the valve will open and provide alarge through-bore.