Fuel pressure regulator

A fuel pressure regulator comprising:

• a fuel inlet;
• a fuel outlet;
• a seating surface;
• and
• a valve member assembly comprising a poppet and also comprising a sealing member which is made of an elastomer material as a discrete element from said poppet and which is annular in shape and including a sealing member surface such that said sealing member includes a central opening extending therethrough which is closed by said poppet, said sealing member being supported by said poppet, and said valve member assembly being moveable between 1) a closed position in which said sealing member surface engages said seating surface, thereby preventing fuel flow from said fuel inlet to said fuel outlet and 2) an open position in which said sealing member surface is spaced apart from said seating surface, thereby allowing fuel flow from said fuel inlet to said fuel outlet;
• wherein said poppet includes:
• a central portion which extends along an axis from a first surface which is traverse to said axis to a second surface which is traverse to said axis;
• and
• a guiding portion which extends away from said first surface, through said central opening of said sealing member, and into said fuel inlet;
• wherein said central portion includes a sealing member groove which extends into said first surface such that said sealing member groove is annular in shape and such that a portion of said sealing member is received within said sealing member groove, said sealing member groove 1) being bounded radially inward by an inner wall surface of said poppet which extends from said first surface, 2) being bounded radially outward by an outer wall surface of said poppet which extends from said first surface, and 3) being bounded axially by a bottom surface of said poppet which joins said inner wall surface to said outer wall surface.