Abstract: An improved pressure regulator (60) is provided with an eductive flow to maintain the outlet pressure at increased flows through the regulator. The improved regulator broadly includes a body (61) provided with a bore. A valve seat (24) is movably mounted in the bore to provide a valve seat. A valve member (68) is mounted in the body bore for controlled movement toward and away from the seat to vary the area of a main orifice through which fluid is adapted to flow from an inlet to an outlet. The body has a sensing passage (73) communicating a portion (76) of the bore with the exit passage (65). The facing surfaces (74, 76) of the bore and valve member are so dimensioned and configured as to provide an elongated open-ended annular space (78) therebetween that extends along the guide passage from its communicative intersection with the exit passage to a point beyond which the sensing passage communicates with the guide passage.