... a leading manufacturer of cast iron BS5163 soft seated gate valve, globe valve,check valve,butterfly valve,etc Soft Seated ... Gate Valve BS5163Certificate: CE,ISO9001Description:1.Design confirms to: BS51632. ... DIN 3230, BS 67555.Suitable medium: water and neutral liquid6.Operator: handwheel, nut, extension stem, gear operator7.DN:40-1000mm8. ...