System and method for valve conversion

A valve assembly, comprising:

• a valve body comprising a throughbore with a central axis;
• a valve bonnet, coupled to the valve body;
• an opening extending through the valve body and the valve bonnet, along a longitudinal axis substantially orthogonal to the central axis of the throughbore of the valve body;
• a valve stem;
• a valve member positioned at an end of the valve stem and arranged within the opening, the valve member being movable, along the longitudinal axis, between an open position and a closed position;
• a first actuator housing configured to be coupled to the valve bonnet and comprising a first adapter assembly configured to be coupled directly to the valve stem;
• a second actuator housing configured to be coupled to the valve bonnet and comprising a second adapter assembly configured to be coupled directly to the valve stem and to translate an external rotating force into an axial force;
• and
• the valve stem configured to be selectively coupled to either the first adapter assembly or the second adapter assembly.