YiKDE Hydraulic Flow Control Valve Hydraulic Lock with 40 L/Min
The operating principle of a hydraulic lock is usually a pilot operated check valve with a control port that allows the check valve to be opened or closed as needed by controlling the oil circuit.
For example, in applications such as crane booms, hydraulic locks ensure that the cylinder maintains its position without movement even when there is an external load.
Hydraulic locks can be used in a wide range of applications, including truck crane booms, forklifts, horizontal directional drills, shear differential forklifts, fire trucks, sanitation trucks, etc., especially where the load is small and varies smoothly.
However, hydraulic locks are not suitable for negative loads with large load variations or applications where the dynamic rate of descent needs to be controlled.
Type |
Max Pressure |
Max Flow |
SO-K8B-1 |
320bar |
40L/min |
SO-K8L-J7 |
320bar |
30L/min |
SO-K6B-3 |
320bar |
10L/min |
SO-K6B-5 |
320bar |
10L/min |



Shandong Yikaide Hydraulic Co., Ltd. is located in Jining, Shandong, which is known as the "hometown of Confucius and Mencius and the land of etiquette". It is a professional technical enterprise that integrates the research and development, manufacturing, sales, and service of hydraulic components.
The company covers an area of approximately 20000 square meters, with a high-tech factory building of 10000 square meters, more than 80 high-precision processing equipment, more than 20 precision testing instruments, and more than 20 product testing and testing equipment. The company has 33 national patents and has been awarded the titles of "National High tech Enterprise", "Provincial Specialized, Refined, and New Enterprise", and "Jining City One Enterprise, One Technology Research and Development Center Enterprise", and has passed the IS09001 quality system certification.
Our main products include rotary joints, multi way valves, balance valves, solenoid valves, manual pumps, synchronous valves, etc. Hydraulic products are widely used in industries such as engineering machinery, mining machinery, special walking machinery, and agricultural and forestry machinery.Our products are selling well in countries such as Russia,Europe, America, Southeast and Asia.



Q1: Are you trading company or manufacture?
A: We are manufacture which have the right to import and export.
Q2: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock or it is 30-40 days if the goods are not in stock.
Q3: Do you provide samples? Is it free or extra?
A: We can provide samples,but not for free.
Q4: What is your terms of payment?
A: Payment less than 1000 USD,100% in advance.Payment more than 1000 USD,30% T/T in advance,balance before shipment.