RICKMEIER DB9-pressure relief valves are used in the field of oil hydraulics, lubrication technology with many of different oils or lubricants. This valves arefor pressure relief purposes. They are not safety valves according to DIN 3320.

Typical industrial fields:

General machine building, automobil industry, apparatus engineering, construction machines, mining industry, chemical industry, diesel engines, printing machines, electric motor construction, automotive engineering, gas turbines, gears, industrial gear transmissions, refrigeration technology, compressor manufacturing, power generation, motorconstruction, paper machines, pump industry, shipbuilding, textile machines, compressor manufacturing, water turbines, rolling mills, tooling machines, wind energy generation, and cementplant.

Hydraulic Systems

In various hydraulic systems, when the system pressure exceeds the preset value, the DB9 pressure relief valve can open rapidly, allowing the excess hydraulic oil to flow back to the oil tank. This prevents damage to hydraulic components (such as hydraulic pumps, hydraulic cylinders, hydraulic motors, etc.) caused by excessive system pressure, ensuring the safe and stable operation of the hydraulic system. It is commonly found in the hydraulic systems of construction machinery (such as excavators, loaders, cranes, etc.), machine tool equipment, and injection molding machines.

Lubrication Systems

In the lubrication systems of some large-scale mechanical equipment, the DB9 pressure relief valve can be used to control the pressure of the lubricating oil. When the lubricating oil pressure is too high, the pressure relief valve opens, allowing some of the lubricating oil to flow back. This ensures that the lubrication system pressure remains within an appropriate range, guarantees the lubrication effect, and avoids lubricating oil leakage or excessive wear on lubricated components due to excessive pressure. For example, it is applied in the gearbox lubrication systems of wind turbine generators and the lubrication systems of ship power plants.

Industrial Process Control

In the fluid handling processes of industrial fields such as chemicals, petroleum, and food, the DB9 pressure relief valve can be used to control the pressure of fluids in pipelines. When the fluid pressure exceeds the safety limit, the pressure relief valve acts promptly to prevent safety accidents such as equipment damage and pipeline rupture caused by excessive pressure, ensuring the smooth progress of industrial processes.