Mud Pump Seat Puller Basic Operating Instructions A hydraulic valve seat puller is a service tool. It is used to take the installed mud pump valve seat out of the mud pump fluid end module, during the process of replacing the valve seat or mud pump maintenance. At the same time, eliminate damage to fluid end expendables caused by removing the valve seat with a cutting torch. It consists of an oil cylinder, hydraulic hand pump with pressure gauge, all thread rod, puller claw etc. This tool is mor