Structural design

- Valve body: usually made of high-strength metal materials, such as cast steel or alloy steel, to withstand high pressure and impact loads in the hydraulic system, with good sealing and corrosion resistance.

- Valve core: It is a key component of the oil return check valve. Common structural forms include ball valves, cone valves and slide valves, which can realize opening and closing actions under the action of fluid pressure.

- Spring: It is used to provide force to reset the valve core, ensuring that the valve core can be quickly closed when there is no pressure or the pressure is reversed to prevent oil backflow. The stiffness and preload of the spring are designed according to the system pressure and flow requirements.

Role and Function

- Maintain oil return pressure: ensure a certain back pressure in the oil return line, compensate for possible cavitation in the system, prevent air from entering the hydraulic system, and ensure continuous and stable flow of hydraulic oil.

- Protect components: prevent excessive oil return disturbance or impact from damaging hydraulic oil radiators, filters and other components, and extend the service life of these components.

- Maintain system stability: ensure the directionality and stability of oil flow in the hydraulic system, help to stabilize the system pressure, and enable each action of the excavator to be performed smoothly and accurately.

FAQ:
1.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.

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.I 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.

5.can I order one of our samples for testing first?

A: Of course!

Welcome to contact us for Inquiry & orde

If you are not sure about the model and part number - please contact us via WhatsApp

Who we are: We are excavator spare parts manufacturer to do high quality products

What we do: Our supply chain covers engine parts, hydraulic parts, relief valves, pilot pumps, gear parts electrical parts, seals, bearings, we serve the domestic market and overseas markets, in the field of excavator parts has more than 15 years of experience, our overseas customers to establish a strong partnership.

Our service object: excavator parts wholesalers, excavator parts dealers. Individual engineering team.

GVO Brand Excavator Parts is well known in China and internationally. Reliable service Massive inventory stock, so you do not have to wait for delivery time, we provide, Komatsu, Hitachi, Volvo, Hyundai, Dosan, Kobelco, Kato, Sumitomo, JCB, Sany, Xugong, Carter, Case, excavator parts are in stock.

Customers can obtain high-quality, correct parts at the most favorable price, the fastest way, high-quality parts, is our lifelong pursuit of the goal