Hydraulic systems lose efficiency quickly when reverse oil flow begins affecting pressure balance inside the circuit. The 521-3213 / 5213213 check valve assembly is designed for 345GC, 349, 352, and 374 excavators to isolate hydraulic flow direction and maintain circuit stability during high-load machine operation. Check valves are commonly used to control one-way hydraulic flow and prevent backflow inside pressure systems.
Item NO.:
521-3213Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time:
2-3 DAYS
| Part Number | 521-3213 |
|---|---|
| Part Name | Valve |
| Compatible Brand | Caterpillar |
| Applicable Models | 345GC, 349, 352, 374 |
| Application | Excavator |
| Material | Hardened alloy steel |
| Product Color | Metallic industrial grey |
| Working Temperature | -30°C to 120°C |
| Key Function | Controls one-way hydraulic oil flow and prevents backflow |
| Condition | 100% New, Aftermarket / OEM Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |

Prevents reverse oil movement that can disturb hydraulic circuit balance.

Helps maintain smoother hydraulic response during heavy-duty operation.

Minimizes pressure fluctuation affecting valves and pump components.


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