gate valve BS;DIN F4,F5;AWWA C509/C515;ANSI with iso9001, CE and WRAS certificate high quality and reasonable price Resilient seated NRS Flanged ends DIN F4 gate valveDESCRIPTION1.Design confirms to: DIN33522.Flanged drilled confirms to:DIN25013.Normal pressure: 1.0MPa, 1.6MPa, 2.5MPa4.Test & Inspection: DIN 3230, BS 67555.Suitable medium: water and neutral liquid6.Operator: handwheel, nut, ...