The mud pump valve rod guide (lower), which is installed in the chamber of the cylinder, acts as a centring and positioning suction valve body assembly. It consists of a guide body and an inner sleeve, which is inserted into the guide body. The material of the guide body is ZG35CrMo, and the inner sleeve is carburized and hardened by 20CrMnTi. Check the inner sleeve of the valve rod guide once a week. Replace it if there is obvious wear (the gap between the valve rod and guide is more than 3mm), so as not to lose the guiding function of the guide and accelerate the wear of the valve. Detail information: 1. brand name: Lake Petro 2. application: Oil well drilling mud pump 3. material : forging /Iron 4.application model is : F500 F800 F1000 F1300 F1600 F2200 5. onshore or offshore rig 6. exchange with BOMCO,HONGHUA,TFI,Weatherford,nabors,kerui,Kunlun,ZYTZ GARDNER DENVER:PZ-7, PZ-8, PZ-9, PZ-10, PZ-11 IDECO:T-500, T-800, T-1000, T-1300, T-1600 NATIONAL:7-P-50, 8-P-80, 9-P-100, 10-P-130, 12-P-160, 14-P-200, 14-P-220, K-700, K-700A, K-500, K-500A OILWELL:A-350PT, A-560PT, A-600PT, A-850PT, A-1100P, A-1400PT, A-1700PT EMSCO:F-500, F-800, F-1000, F1300, F1600, FB-1300, FB-1600, D-375, D-700, D225 LANSHI:3NB-1300C, 3NB-1000, 3NB-1000C, 3NB-800 QINGZHOU:SL3NB-1300A, QZ1000, QZ-500, QZ-350, QZ800, SL3NB-1600 RUSSIAN:8T-650, UNBT-600, UNBT-950, UNBT-1180L, UNBT-950A, UBT-400, BT-600, UB-590, UNB-600, 8T310, 8T650-01