High-performance Rear Pump Regulator Valve For Construction Machinery Xcmg *******43 Kr3k-9n4a-v37t

The *******43 KR3K-9N4A-V37T Rear Pump Regulator Valve is a genuine XCMG OEM component designed to control and stabilize hydraulic pump output in excavators, wheel loaders, and other heavy machinery. Mounted on the rear of the main pump, this regulator maintains consistent system pressure under variable engine speeds and load conditions, preventing pressure spikes and ensuring smooth, efficient operation.

Manufactured to XCMG’s exacting standards, the valve body and spool are precision-machined from hardened steel, and sealed with high-performance elastomers to withstand pressures up to 25 MPa. Its built-in damping grooves minimize pressure oscillations, reduce noise, and protect downstream components from hydraulic shock. Direct-fit mounting and standard porting allow drop-in replacement with no modifications required.

Key Benefits

• Stable Pressure Control: Regulates pump output to maintain set pressure across load variations

• Hydraulic Shock Reduction: Damping features prevent pressure spikes and extend component life

• OEM Fit & Reliability: Direct replacement for XCMG part KR3K-9N4A-V37T—guaranteed compatibility

• Durable Construction: Hardened steel and premium seals resist wear, contamination, and fatigue

Applicable Machines

• XCMG Excavators: XE150, XE215C, XE230C, XE265C, XE305D, XE370D

• XCMG Wheel Loaders: ZL30GV, ZL50GN, LW300FN, LW500FN

• XCMG Motor Graders & Cranes using rear-mounted pump regulator assemblies