Screw throttle valve R901109366 hydraulic cartridge valve OD21010356

      DBDS6K  Relief valve DBD series is a kind of hydraulic pressure control valve, which mainly plays the role of constant pressure overflow, pressure regulation, system unloading and safety protection in hydraulic equipment. In the assembly or use of the relief valve, due to the damage of the O-ring seal, the combination seal ring, or the loosening of the installation screw and pipe joint, it may cause undue external leakage. REXROTH Relief Valve DBD Series If the taper valve or main valve core wear is too large, or the sealing surface contact is poor, it will also cause excessive internal leakage, and even affect normal operation. REXROTH Relief Valve DBD Series Safety protection: The valve is closed when the system is working normally. Only when the load exceeds the specified limit (system pressure exceeds the set pressure), the overflow is turned on for overload protection, so that the system pressure is no longer increased (usually the set pressure of the relief valve is 10% to 20% higher than the working pressure of the system Zgao).

      Practical applications are generally: as a unloading valve, as a remote pressure regulator, as a high and low pressure multistage control valve, as a sequence valve, used to produce back pressure (string on the return oil circuit).

The relief valve generally has two structures: 1, direct acting relief valve. 2. Pilot operated relief valve.

The main requirements for the relief valve are: large pressure regulation range, small pressure regulation deviation, small pressure oscillation, sensitive action, large overload capacity, and small noise.