Self closing taps

Abstract

A self closing tap (102) comprising a cartridge (12) and a tap handle interface is disclosed. The cartridge (12) comprises a piston (122), and a plunger (32). The piston (122) is comprised of a piston head (124), and a piston shaft (126), the piston shaft (126) has a longitudinal axis (A) and is fixed to the piston head (124) at a first end, and the second end of the piston shaft (126) is an engagement end (182). The plunger (32) is movably fixed to a first portion of the piston shaft (126) and adapted to move longitudinally along the first portion of the piston shaft (126). The plunger (32) has a first and second end with the second end of the plunger (32) being closer to the engagement end (182) of the piston shaft than the first end, the tap handle interface comprises a first and second recess (186, 154), the first recess (186) is adapted to receive the engagement end (182) of the piston shaft (126) and prevent rotation of the piston shaft (126) around its longitudinal axis (A), and the second recess (154) is adapted to receive at least the second end (126) of the plunger (32) and to prevent rotation of the plunger (32) around the piston shaft (126).

Dependencies are inferred from the claim text.