PRESSURE REGULATING VALVE

A pressure regulating valve (22) is provided that includes a housing (24), a sleeve (30), a piston (32), an adjustment nut (34), and a piston spring (36). The housing (24) includes a sleeve bore (26). The sleeve (30) has a side wall (42) that extends axially between a base end (44) and a distal end (46), an end wall (48) disposed at the base end (44), an interior cavity (50) that extends axially between the base end (44) and the distal end (46), and a plurality of ports (28). The sleeve (30) is disposed within the sleeve bore (26). The piston (32) extends axially between a land end (56) and a spring end (58). The adjustment nut (34) is engaged with the sleeve (30), and is configured for axial translation relative to the sleeve (30). The piston spring (36) is disposed to provide a spring force on the adjustment nut (34) and the piston (32). The sleeve (30) includes an asymmetric feature (68, 68A, 68C, 68D) that engages with the housing (24) to prevent rotation of the sleeve (30) relative to the housing (24).