Check Valve Hydraulic Lock with Double Pilot Operated
Hydraulic lock is a key component in a hydraulic system, mainly used to realize the locking function in the system, to ensure that the load can remain stable when the hydraulic cylinder or other actuating element stops moving, and to prevent the position change due to leakage or other reasons.
Hydraulic locks usually consist of a main valve and a pilot valve. Under normal operating conditions, the pilot valve remains closed so that the main valve is also closed, thus preventing the flow of oil. When it is time to unlock, the pilot valve opens in response to a control signal (e.g., a solenoid signal), allowing the main valve to open and permitting oil to flow.
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.