... 1. Operation: Handwheel, Gear, Motor, Pneumatic operator 2. AISI, ASME, API A216-WCB Gate ValveForged steel gate valve describe:Size: NPS 1/2"-2 ... . Connection:flanged,BW,etc. Applicable standards:.STEEL GATE VALVES,API 600/API 6D.STEEL GATE VALVES,ISO 10434/ISO 24313.FACE TO ... .5.INSPECTION AND TEST,API 598/API 6D A216-WCB Gate Valve