swing check valve size:DN50--DN400 with iso9001, CE and WRAS certificate high quality and reasonable price swing check valveDESCRIPTION1.Face to Face:DIN3202 F6, BS51532.Flange drilled: DIN2501, BS45043.Normal pressure: 1.0MPa, 1.6MPa, 2.5MPa4.Suitable medium: water MATERIAL LISTNo.PARTMATERIAL 1BODYGGG40/GGG50 2DISC COREGGG40/GGG50 3DISCNBR/EPDM 4RUBBER SEALNBR/EPDM 5BONNETGGG40/GGG50 DIMENSIONS ...