Double Pilot Operated Check Valve SO-K8B-1 Hydraulic Lock for Hydraulic System
Hydraulic locks play a crucial role in maintaining the stability and safety of hydraulic systems in various applications. By preventing unintended movement of hydraulic cylinders or actuators, they ensure that heavy machinery operates precisely and securely. This is particularly important in scenarios where precise positioning or holding of loads is required, such as in construction sites or industrial settings. Without hydraulic locks, there could be significant risks of accidents or damage to equipment and personnel.
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 a trading company or manufacturer?
A: We are manufacturer which has 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 are your terms of payment?
A: Payment less than 1000 USD,100% in advance.Payment of more than 1000 USD,30% T/T in advance, balance before shipment.