R901235473 Bosch Rexroth Pressure relief valve

The pressure valve type DBD..K.. is a direct operated pressure relief valve for installation in block designs. It is used to limit a system pressure. The system pressure can be set via the adjustment type (5). In the initial position the valve is closed. Via control line (1) and poppet (2), the pressure in the main port ➀ acts on the spring plate (3). If the pressure in the main port ① rises above the value set at the compression spring (4), the poppet (2) opens and the hydraulic fluid flows into the main port ➁. ➀ = Main port 1 (P) ➁ = Main port 2 (T)