... -8" 3)ISO9001:2000 4)SMS,DIN,3A,IDF,ISO,BS,DS 1000pcs a week,sanitary 3 pc butterfly valve Sanitary ... )ISO9001:20004)Standard:SMS,DIN,3A,IDF,ISO,RJT,BS,DS,BPE...5)Application:dairy produce,brewery,food,pharmacy,berverage,cosmetics,chemical ... manual operation by handle7)Three drive forms:often closing type,often opening type is pneumatic or manual type Sanitary 3 pc butterfly valve