... &1"-8" 3)ISO9001:2000 4)SMS,ISO,DIN,3A,BS,DS,BPE 1000pcs a week,sanitary clamp check valve Features:sanitary clamp check valve1 ... )Material :SS304,304L,316,316L2)Size:DN25-150 &1"-6"3)Certificate:ISO9001:20004 ... , etc.6)connnection type:welded,clamped,flanged,threadedIDF sanitary clamp check valve