valve type piston

piston type regulating valve

piston-type sliding valve

separate valve box type piston pump

valve pot type piston pump

axial piston type pump

box type piston

box-type piston

center packed type piston pump

centre-packed type piston pump

cross head type piston

cup type piston

dosage valve piston

expansion valve piston

fixed pin type piston

floated pin type piston

gravity-piston type corer

HXQ hydraulic piston type accumulator

inside-packed type piston pump