A manual operator for use with a valve, comprising: a locking plate adapted to be coupled to a valve body of the valve; a lever rotatably coupled to the locking plate and adapted to be coupled to a shaft of a flow control member of the valve; a handle pivotally coupled to the lever and having a first end and a second end opposite the first end, the handle configured to pivot between a first position to prevent rotation of the lever relative to the locking plate and a second position to enable rotation of the lever relative to the locking plate; a biasing element disposed between the handle and the lever to bias the handle toward the first position; an aperture disposed along a portion of the handle; at least one tab (154, 158) protruding from the lever and adjacent a first side surface or a second side surface of the handle proximate to the aperture of the handle; and a lockout member removably coupled to the handle, wherein the aperture of the handle is configured to receive at least a portion of the lockout member, such that the lockout member is arranged to engage via interference the at least one tab (154, 158) to prevent the handle from pivoting between the first and second positions to prevent rotation of the lever relative to the locking plate when the lockout member is coupled to the handle, wherein the locking plate includes at least a first notch corresponding to a first position of the lever relative to the locking plate and a second notch corresponding to a second position of the lever relative to the locking plate, and wherein the first end of the handle includes an engaging edge that engages one of the notches when the handle is biased in the first position, characterized in that the handle includes a safety tab at the first end, the safety tab protruding outward from the engaging edge in a direction away from the second end of the handle, and the safety tab configured to engage a bottom surface of the locking plate via interference when the handle is biased in the first position such that the safety tab prevents the lever from dislodging from the shaft. a locking plate adapted to be coupled to a valve body of the valve; a lever rotatably coupled to the locking plate and adapted to be coupled to a shaft of a flow control member of the valve; a handle pivotally coupled to the lever and having a first end and a second end opposite the first end, the handle configured to pivot between a first position to prevent rotation of the lever relative to the locking plate and a second position to enable rotation of the lever relative to the locking plate; a biasing element disposed between the handle and the lever to bias the handle toward the first position; an aperture disposed along a portion of the handle; at least one tab (154, 158) protruding from the lever and adjacent a first side surface or a second side surface of the handle proximate to the aperture of the handle; and a lockout member removably coupled to the handle, wherein the aperture of the handle is configured to receive at least a portion of the lockout member, such that the lockout member is arranged to engage via interference the at least one tab (154, 158) to prevent the handle from pivoting between the first and second positions to prevent rotation of the lever relative to the locking plate when the lockout member is coupled to the handle, wherein the locking plate includes at least a first notch corresponding to a first position of the lever relative to the locking plate and a second notch corresponding to a second position of the lever relative to the locking plate, and wherein the first end of the handle includes an engaging edge that engages one of the notches when the handle is biased in the first position, characterized in that the handle includes a safety tab at the first end, the safety tab protruding outward from the engaging edge in a direction away from the second end of the handle, and the safety tab configured to engage a bottom surface of the locking plate via interference when the handle is biased in the first position such that the safety tab prevents the lever from dislodging from the shaft.