Shear pin safety valve can be connected in two ways, one is threaded connection, and the second is flange connection. It is an insurance of mud pump, before the pump working, according to the cylinder and piston specification determines the rated pressure, the safety valve cover off the shear pin on the clipboard into the pin hole. If the pump head pressure exceeds the rated pressure, shear pin will be cut and mud from the side of the vent valve, play a protective role.
Guider (lower) is installed in the inner chamber of the hydraulic cylinder ,for centering and positioning the suction valve body assembly. The guider consists of the guide way and the inner sleeve embedded in the guide way. The material of the guide way is ZG35CrMo, and the inner sleeve is treated by 20CrMnTi carburization and quenching.
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.