Excavator hydraulic pressure relief valves are mainly spring-type and pilot-operated.

- Spring-type pressure relief valve: When the system pressure exceeds the set value, the pressure acts on the valve core, overcoming the elastic force of the spring to open the valve core, and the hydraulic oil flows back to the oil tank through the pressure relief valve, and the system pressure drops; when the pressure drops below the set value, the spring force resets the valve core and closes it.

- Protect equipment safety: prevent excessive system pressure from damaging hydraulic components such as cylinders, oil pipes, hydraulic pumps, etc., and avoid failures such as component rupture and seal damage due to overpressure.

- Stabilize system pressure: keep the hydraulic system pressure within the set range to ensure the stability and reliability of each action of the excavator, and avoid excessive pressure fluctuations that affect work efficiency and operating accuracy.

- Achieve overload protection: When the excavator encounters an unexpected overload, such as when the boom is impacted by external force and the excavation resistance suddenly increases, the pressure relief valve opens in time to relieve pressure and protect the hydraulic system and mechanical structure.

FAQ:

1.know only the excavator model, but can not offer parts No., what should I do ?

A;If possible, you can send us the old photo, nameplate or the size for reference.

2, Do you have stock for the goods?

A;We have plenty stock for many items in the warehouse.

3. Do you test all your goods before delivery?

A: Yes, we have a 100% test before delivery.

4.What is the warranty of the parts after I purchase?

A: The warranty is 6/12 Months based on the item details.Please consult sales for details

5.What do you mainly produce?

A;Our main business hydraulic Spare Parts,safety valve,Gear pump,hydraulic pump,control valve,Trave Motor Assy,swing motor,Seal kit, Electric parts,solenoid valve, engine assembly.etc.

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