Kit Of Spring Suspension For 1400 Hp Demu Consisting Of The Following Items Conforming To Rdso Specification No. Ck 406 & Ck 407. (1) Levelling Valve. Kbi Part No. 116883. Approved Kpi Drg. No. C136840 Alt 2, Qty. 10 Set (2) Installation Level Assembly [Ball & Socker]. Kbi Part No. I.3.1905. Approved Kbi Drg. No. I.3.1905 Alt 4, Qty. 6 Set. (3) Duplex Check Valve. Kbi Part No. I.3.1902. Approved Kbi Drg. No. I.3.1902 Alt 5, Qty. 10 Set. (4) Two Way Dirt Collector. Kbi Part No. I.2.324/2