👉 The catch fluid, also known as catch lubricant or catch grease, is a specialized lubricating oil designed to protect the moving parts of hydraulic systems, particularly those in catch valves. These fluids are formulated with additives that provide excellent lubrication and corrosion protection, ensuring smooth operation and extending the lifespan of the system. When a catch valve closes, it creates a seal to prevent fluid from escaping, but this closure can generate heat and pressure, leading to wear and potential damage. The catch fluid acts as a buffer, reducing friction between the valve components and the surrounding parts, thereby minimizing wear and tear. Additionally, it helps dissipate heat and prevents corrosion by forming a protective layer on metal surfaces, making it an essential component in maintaining the efficiency and durability of hydraulic systems.