... : Handwheel, Gear, Motor, Pneumatic operator 2. AISI, ASME, API A216-WCB Gate ValveForged steel gate valve describe:Size: NPS 1/2"-2" Pressure: Class ... ,etc. Connection:flanged,BW,etc. Applicable standards:.STEEL GATE VALVES,API 600/API 6D.STEEL GATE VALVES,ISO 10434/ISO 24313.FACE TO FACE ... .25.END FLANGES,ASME B 16.5.INSPECTION AND TEST,API 598/API 6D A216-WCB Gate Valve