352-7122 relief valve gp for CAT excavators spare part

352-7122 relief valve gp for CAT excavators spare part Featured Image
  • 352-7122 relief valve gp for CAT excavators spare part
  • 352-7122 relief valve gp for CAT excavators spare part

Short Description:

Hydraulic overload relief valve for Caterpillar 320D/323D/325D main control valve, releases pressure when hydraulic circuit overload to protect pump and valve assembly from high-pressure impact.

Product Detail

Product Tags

description

This cartridge relief valve assembly features hardened and precision-ground spool and seat with built-in adjusting spring. It is plugged into main control valve block for branch overload protection. When bucket or boom hits hard obstacles and pressure exceeds setting value, the valve opens to release fluid and limit peak pressure. Stuck spool, fatigued spring and scored seat cause low pressure, weak movement, noise and internal leakage. Broken spring may lead to no pressure, while failed relief will damage pump and hose.

Part No.:352-7122
Type: Cartridge overload relief valve
Male-end thread size: 1-1/16-12
Overall length: 100 mm (3.92 in)
Material: Alloy steel spool, hardened seat
Mounting: Cartridge type for main control valve block
Compatible Fluid: Anti-wear hydraulic oil
Working Condition: Alternating hydraulic impact and dusty construction site
Matching System: Hydraulic protection assembly for main control valve

Application Scenarios

Fits Caterpillar 320D,320D2,320DL,323D,323DL,324D,325D,329D track excavators, for overhaul of boom, stick and bucket circuit overload protection on main control valve. Matching part:352-7123.

FAQ 

Q：Can slightly leaking relief valve run temporarily?
A：Not recommended. Seat wear causes pressure drift and sudden failure under heavy load.

Q：Can 352-7122 swap with 352-7123 directly?
A：No. Their preset pressure differs, wrong valve leads to weak action or lost protection.

Q：Is weak hydraulic movement caused by this relief valve?
A：Check main relief valve, pump wear and clogged filter first.

Q：Can I adjust spring heavily if pressure is too high?
A：No. Over-set pressure removes overload protection and risks burst hose and pump damage.

our warehouse

our warehouse

Pack and ship

Pack and ship


  • Previous:
  • Next:
    • Write your message here and send it to us

    Products categories