Abstract: A fluid transport coupling subcomponent can include a body having a first axial end with a first axial face, a second axial end, and a hollow conduit extending between the first and second axial ends, a tongue extending longitudinally from the first axial face; and a groove recessed into the first axial face. The tongue can extend a distance, DT1, from the first axial face and the groove can extend a distance, DG1, into the body from the planar face, where DG1 and DT1 can be different.

Abstract: A fluid transport coupling subcomponent can include a body having a first axial end with a first axial face, a second axial end, and a hollow conduit extending between the first and second axial ends, a tongue extending longitudinally from the first axial face; and a groove recessed into the first axial face. The tongue can extend a distance, DT1, from the first axial face and the groove can extend a distance, DG1, into the body from the planar face, where DG1 and DT1 can be different.

Abstract: Pumps of this invention comprise a pump housing having at least one pressurizing chamber disposed therein, and a pressurizing member is disposed within the pressurizing chamber. The pressurizing member has a body with a solid imperforate head at one end, a thin-walled skirt extending away from the body head, and a flange extends circumferentially around a terminal edge of the skirt. A piston is disposed within the pump housing and is connected at one end to the pressurizing member. A piston gland is attached to the chamber and includes a diametrically positioned piston guide through which the piston is disposed. The flange is interposed between the chamber and the piston gland and includes sealing means to provide a fluid-tight seal therebetween. A pressurizing member plug is attached to the pressurizing member and has an outside wall surface that contacts and carries a variable portion of the skirt inside surface during reciprocating pressurizing member axial displacement.