... KY Material:aluminium alloy ISO9001,CCC Size:DN50,DN65 fire fighting couplingModel:KD KN KYMaterial:aluminium alloyISO9001,CCCSize:DN50,DN65 ... CONTACT US 2. Fire coupling Used for combining water band with water band ,fire hydrant ,water lance and fire-fighting truck so that ... they are to supply water or foam misture for putting out fire.WaterBand Connector and ...