Description

 The power end stay rod is connected with plunger by coupling, which enables the plunger to make reciprocating motion in effective stroke during working and change the volume fraction and flow rate of fracturing fluid inside fluid end to achieve higher pressure of fluid chamber.
The plunger is also among the expandable list for mud pump fluid end.
The plunger\'s surface is coated with Ni*2 alloy powder, making it more durable and wear-resistant.