The present application relates to a hydraulic assembly of a generator of medium-pressure and high-pressure pulsed or non-pulsed jets. The hydraulic assembly includes a hydraulic pipe with a flexible deformable zone. The flexible deformable zone can have a state of rest and a shut-off state. The hydraulic assembly includes a unit configured to hold the hydraulic pipe with a first clamp and a second clamp holding the hydraulic pipe on each side of the flexible deformable zone. The unit can form an open space between the first clamp and the second clamp.