Abstract: The coupling for connecting an end of a first tubular member (12) to a part (13) comprises a sleeve (3), at least two bushings (2) said bushings being coupled to said tubular member by spreading means, compression means (4) acting on said bushings and able to compress said end of said first tubular member against said part through their coupling with the tubular member, wherein when said compression means compress said bushings, said bushings are moved away from said end of said first tubular member against an inner side of said sleeve by said spreading means.

Abstract: The present invention relates to a piston pump for generating a delivery flow, which is substantially free of pulsation, in particular to a dual piston pump, and to a method for controlling such a piston pump delivering a pumped medium from a low-pressure area into a high-pressure area, wherein measuring sensors detecting mechanical forces or moments transmitted by the structure of the pump or its associated drive unit are used instead of the pressure or flow sensors usually employed for this purpose.