... steel, three cylinders of each pump are interchangeable. Valve-over-valve (through type cylinder)design reduces the cylinder volume ... the abrasion resistance. Dischange pulsation dampener, shear relief valve and discharge strainer are furnished at the outlet. F ... : Cylinders, liners, pistons, valves, valve seats, valve springs, seal rings, valve covers and cylinder covers at the fluid end of F-800 ...