Overhauling Kit For Duplex Check Valve Consisting Of Four(4) Items Of M/S K Norr Bremse Make As Follows: 1.Sealing Ring-543890-2 Nos 2.O-Ring - A 27763/26- 2 Nos 3.T Oothed Washer- 466031-2 Nos. 4. Valve Head- A 48128-2 Nos. [ Warranty Period: 30 Months Af Ter The Date Of Delivery ] ]