Piston assembly is the major part of the mud pump fluid end. The discharge pressure of mud pump is generated by the up-and-down motion of the piston in the cylinder. Small piston—high pressure and low flow rate; Big piston—low pressure and high flow rate. Metric pump and inch pump adopts metric piston and inch piston respectively.

Material: piston core 42CrMo; Rubber sheet: Buna-N rubber or polyurethane.

Metric piston parameters

Inch piston parameters