SEALING GASKET HAVING A THROUGH HOLE WITH A CROSS SECTION DECREASING IN SIZE, NOZZLE WHICH CAN BE COUPLED TO SAID GASKET, AND SPRAYING END COMPRISING SAID NOZZLE COUPLED TO SAID GASKET.

摘要

The invention relates to a sealing gasket having an almost annular shape and comprising a through hole which crosses the gasket in axial direction. The hole is delimited by a wall which is almost shaped like a truncated cone so as to cause the hole to take a cross section the size of which decreases from an inlet mouth toward an outlet mouth thereof. The hole delimiting wall radially widens at the inlet mouth to form a flange shaped like a circular crown. The flange extends in axial direction from the side of the outlet mouth to form an edge which radially delimits the gasket. The latter is made of an elastomeric material so that when it is tightened between two pipes, the hole delimiting wall radially deforms when a fluid passes, thus resting against the inner surface of the pipe. The main application of the gasket of the invention is to couple a spray nozzle to a nipple connected to a delivery pipe of the nozzle. The invention also relates a nozzle having an inlet mouth which can be coupled to the aforesaid gasket and is flared from said inlet mouth toward an outlet mouth thereof. The invention further relates to a spraying end comprising the aforesaid nozzle coupled to a nipple by means of a ball joint at which the aforesaid gasket is present.