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What are the common failure modes of PV7 series pumps?
Common failures include vane wear, stator cam ring damage, shaft seal leakage, bearing fatigue damage, and valve core jamming in the control unit (for variable-displacement models).
How to replace the shaft seal of the PV7 series pump?
First, disassemble the pump from the system and the motor, remove the old shaft seal with a special tool, clean the seal groove, install a new shaft seal with the lip facing the inside of the pump, and apply a small amount of hydraulic oil to the lip before assembly.
Is it necessary to install a check valve on the discharge side of the PV7 series pump?
It is recommended to install a check valve on the discharge side to prevent reverse flow of hydraulic oil when the pump stops, avoid pump reversal and reduce startup load.
What is the difference between the PV7-1X and PV7-2X subseries?
The PV7-1X is a fixed-displacement vane pump with a simple structure and stable flow output; the PV7-2X is a variable-displacement vane pump that can adjust displacement automatically according to system pressure or flow demand to achieve energy saving.
How to adjust the output flow of the PV7-2X variable-displacement pump?
The PV7-2X is equipped with a pressure compensation or flow compensation control mechanism; adjust the set value of the compensation valve through the adjusting screw on the pump body to change the output flow of the pump.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Total Annual:
1 million-10 millon
Employee Number:
>50
Ecer Certification：
Verified Supplier
Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...
