... easily and reliably. Fluid end Fluid end consists of cylinders, valve assembly, liners and pistons. Fluid end features: 1. ... strainer are mounted at the outlet. Valve assembly The suction valve and the discharge valve for F series mud pumps are ... piston from looseness.Cylinders, liners, pistons, valves, valve seats, valve springs, seal rings, valve covers and cylinder covers at the fluid end of ...