• Specification

Excavator accessories lifter valve core Komatsu PC78 hydraulic pump lifter valve core assembly PC78 lifter valve core pressure regulator sleeve valve core pressure regulator pump pressure regulator

Working pressure principle

The housing of the lifter is equipped with multiple oil channels and interfaces for connecting the hydraulic pump and other related components to transport and distribute hydraulic oil. When the hydraulic system is working, the pressure oil enters the lifter from a specific oil channel. The valve core moves in the housing and regulates the flow direction and pressure of the hydraulic oil by changing the on-off state of different oil channels. For example, when the valve core is in a certain position, the pressure oil can flow to a specific actuator to drive it to work; while in another position, the oil flow direction may be restricted or changed, causing the actuator to stop or change its action. The piston cooperates with the valve core to transfer the liquid pressure, and the spring provides the valve core with a reset force, so that the lifter can return to its initial state when there is no external command.

Function

The PC78 lifter valve core assembly can accurately control the flow direction and pressure of the hydraulic oil according to the different working conditions of the equipment. For example, when the excavator is working, the pressure and flow direction of the hydraulic oil can be adjusted according to different actions such as digging, lifting, and rotation, so that each component can work with appropriate force and speed, which can not only meet the working requirements but also improve efficiency and reduce energy consumption. At the same time, it can also protect the hydraulic system and prevent excessive pressure from damaging system components. When the system pressure exceeds the set value, the valve core can open the overflow channel and other methods to allow excess oil to flow back to the oil tank, thereby controlling the pressure within a safe range.

Our advantage

1. Stable performance: under normal use conditions, the performance of the product will not change significantly, which can meet the needs of users.

2. Stable appearance: the appearance of the product will not be obviously worn, faded or deformed during long-term use and storage.

3. Stable durability: the structure, performance and function of the product will not be significantly reduced during long-term use, and it can withstand various harsh environmental conditions.

4. Reliability and stability: during the long-term use of the product, its failure rate is low and it can maintain a stable running state.

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