Metering valve having a metering chamber

Abstract

A metering valve for dispensing a fluid product, comprising: a valve body (10) including a metering chamber (20); and a valve member (30), wherein the metering chamber (20) is defined by a chamber insert (40) and two annular seals, a valve seal (21) and a chamber seal (22), the chamber insert (40) including a cylindrical wall (49), an upper edge (41) cooperating with the valve seal (21), and a lower edge (43) cooperating with the chamber seal (22), and the valve member (30) is configured to fit within the valve body (10). ) between a rest position and a discharge position to selectively discharge the fluid product in the metering chamber (20), the valve member (30) being biased toward the rest position by a spring (8) cooperating with the valve body (10) and the valve member (30), and the upper edge (41) of the chamber insert (40) has an annular notch (45) formed radially inward, so that the width of the upper edge (41) that contacts the valve seal (21) is always the same regardless of the width of the cylindrical wall (49).