... manufacture the drilling rigs,drilling tools, petroleum equipment , mud pump and the fluid end expendables. F-500, F-800 and F-1000 ... Mud PumpsPower End (frame, pinion shaft, crankshaft, crosshead and extension ... 'flange. The suction valve and the dischange valve for above three mud pumps are interchangeable. F-500 mud pump uses API#5 valve pot, F-800 ...