Gives classification and terminology for Linear motion type control valves (Globe, Gate, Diaphragm and Pinch or Clamp); Rotary motion type control valves (Ball, Butterfly and Plug). Also gives classification and terminology for control valve actuators. Actuator types included are Diaphragm, Piston, Vane, Bellows, Fluid Motor, Electro Mechanical Type, Electro Hydraulic type and Hydraulic. Description and classification of auxiliary equipment which can be used with control valves is given, along with a glossary which specifies terms common to the control valve industry. Names individual valve parts, defines assemblies of parts, and provides terminology for part and assembly functions.