The inner zirconia mud pump liner has linger using life. In the using, the zirconia 25% content has the same using life with 95% zirconia. So more and more users like 25% zirconia liner. Models of Mud Pump American Block E-800 K-1000 K-1300 K-1600 K-2200 Bomco/RG F-500 F-800 F-1000 F-1300 F-1600 Brewster B-1000-T B-1100-T B-1300-T B-1600-T Emsco F-500 F-800 F-1000 …