Sell API 600check valve(cast iron gate valve,ball valve of stainless steel) 1.flanged end:ANSI B16.5 2.Socket- ... .1 API 600check valve(cast iron gate valve,ball valve of stainless steel)Product diameter:2"-18" Pressure:150Lb-600Lb BW ... , WC6, WC9, LCB, CF8M, CF3M Applicable Medium: steam, water, oil ,acid,alkali