👉 The check fluid, also known as the check fluid or check lubricant, is a specialized lubricant used in hydraulic systems to ensure smooth and efficient operation of check valves. These valves prevent the backflow of fluid by opening and closing based on pressure changes within the system; when pressure drops below a certain threshold, the check fluid flows through the valve, allowing fluid to pass in one direction while blocking reverse flow. This fluid is typically a low-viscosity, non-toxic liquid that reduces friction and wear on the valve components, ensuring reliable performance and longevity of the hydraulic system.
