Butterfly valve

A valve assembly comprising:

• a valve;
• a stem;
• and
• a valve adjustment apparatus coupled to the valve via the stem, wherein the valve adjustment apparatus comprises:
• a locking plate comprising:
• one or more locking grooves oriented on a first side of the locking plate;
• and
• a circumferential opening oriented on a second side of the locking plate opposite the first side;
• a handle extending radially outward from a center of the locking plate in a first direction and operably coupled to the valve via the stem, the handle comprising:
• a locking element to interface with the locking grooves of the locking plate;
• and
• a tab extending radially outward from the center of the locking plate in a second direction opposite the first direction and operably coupled to the handle, the tab comprising:
• an aperture to receive a fastener, the fastener to interface with the circumferential opening of the locking plate.