DISPENSING ASSEMBLY FOR DISPENSING TWO LIQUID COMPONENTS

摘要

Dispensing assembly for dispensing two liquid components, comprising an outer piston pump (4) concentric with an inner piston pump (20) provided with resetting means, in which the inlet and outlet of the piston chambers comprise pre-tensioned non-return valves, in which the inner piston (22) has a small free stroke relative to the other parts of the assembly, a stationary stroke limiting part (56) with a stop (59) is present in the outer piston chamber (5) of the outer piston pump (4), which stroke limiting part under friction can interact with a stop (60) on the inner piston (22), in order to limit the movement distance thereof and permit the movement thereof only under friction, and the outer piston (6) and the inner piston (22) comprise carrier means (11, 51) which can interact in a sealing manner with each other and form an active non-return valve for the outlet of the outer piston chamber (5).