Pressure Regulator

1 . 1 is a top, front, right side view of a pressure regulator showing the new design;

1 . 2 is a front view thereof;

1 . 3 is a back view thereof;

1 . 4 is a right side view thereof;

1 . 5 is a left side view thereof;

1 . 6 is a top view thereof; and

1 . 7 is a bottom view thereof.

The broken lines shown in figures 1 . 2 and 1 . 3 are included for the purpose of illustrating interior structure of the pressure regulator and form no part of the claimed design.