A non-spill female coupler for quick connect/disconnect coupling with a corresponding male coupler, the non-spill female coupler comprising: a housing having an internal bore with an open forward end configured to receive the male coupler, and a supply passage for supplying pressurized fluid to the internal bore; a valve body slidably movable in the internal bore, the valve body defining an internal main cavity that opens to the forward end of the internal bore, and an inlet passage through the valve body for communicating the pressurized fluid from the supply passage to the main cavity; a valve member slidably movable in the valve body toward and away from a valve seat, the valve member having a front face configured to engage a corresponding front face of the male coupler; a piston fixed to the valve member for common axial movement, the piston being interposed between the main cavity on one side of the piston and a trap chamber on an opposite side of the piston, in which the piston includes an internal flow passage extending through the piston to enable fluid connection of the main cavity with the trap chamber; characterised in that the coupler further comprises a face sleeve disposed radially outwardly of the valve member and radially inwardly of the valve body, the face sleeve being axially moveable relative to the valve member and the valve body between a forward and a rearward position, wherein the valve member has a flat front face configured to engage a corresponding flat front face of the male coupler, the flat front face of the valve member being flush with a front face of the face sleeve, and in which the front face of the face sleeve is flush with a forward end of the valve body, such that the female coupler has a non-spill interface with the male coupler when coupled together. a housing having an internal bore with an open forward end configured to receive the male coupler, and a supply passage for supplying pressurized fluid to the internal bore; a valve body slidably movable in the internal bore, the valve body defining an internal main cavity that opens to the forward end of the internal bore, and an inlet passage through the valve body for communicating the pressurized fluid from the supply passage to the main cavity; a valve member slidably movable in the valve body toward and away from a valve seat, the valve member having a front face configured to engage a corresponding front face of the male coupler; a piston fixed to the valve member for common axial movement, the piston being interposed between the main cavity on one side of the piston and a trap chamber on an opposite side of the piston, in which the piston includes an internal flow passage extending through the piston to enable fluid connection of the main cavity with the trap chamber; characterised in that the coupler further comprises a face sleeve disposed radially outwardly of the valve member and radially inwardly of the valve body, the face sleeve being axially moveable relative to the valve member and the valve body between a forward and a rearward position, wherein the valve member has a flat front face configured to engage a corresponding flat front face of the male coupler, the flat front face of the valve member being flush with a front face of the face sleeve, and in which the front face of the face sleeve is flush with a forward end of the valve body, such that the female coupler has a non-spill interface with the male coupler when coupled together.