Double Pilot Operated Check Valve Hydraulic Lock with Cast Steel
A hydraulic lock, also known as a hydraulic cylinder lock or hydraulic check valve, is a component used in hydraulic systems to maintain position or prevent movement under external loads. It is commonly used in various applications where it is necessary for the working mechanism to remain stationary at a specific position.
Hydraulic locks are typically found in construction machinery and lifting equipment, such as cranes and excavators. In these applications, they are used in the outrigger circuits to provide stability and prevent the machine from tipping over during operation. By locking the hydraulic cylinders that extend the outriggers, the hydraulic lock ensures that they remain extended and securely support the machine's weight.
In addition, locks are utilized in presses to enable self-locking of the ram or piston at any desired position. This allows for precise control over pressing operations and prevents unintentional movement while under load.
In mining environments, hydraulic locks play a crucial role in securing support wall jacks. These jacks provide structural support within mineshafts or tunnels and must be locked into position to ensure worker safety.
The operation of a hydraulic lock involves utilizing a check valve design that allows fluid flow in one direction while preventing flow in the opposite direction. When pressure is applied to extend or retract a cylinder, fluid flows through the check valve into one side of the cylinder while being blocked from flowing back out by internal mechanisms within the valve.
By incorporating these locking mechanisms into a hydraulic system, operators can rely on hydraulically controlled components to remain stable and secure under various operating conditions. Hydraulic locks enhance safety measures by preventing unwanted movement caused by external forces such as vibrations or uneven terrain.
Overall, hydraulic locks contribute significantly to maintaining operational efficiency and ensuring operator safety across various industries where precise positioning or load-holding capabilities are required.
| 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.
Audited Supplier 
){kind=link}
){kind=link}