DBDS10P series of Rexroth DBD10 subplate mounting CE certificated directive 97/23/EC direct operated pressure relief
valves are are control the pressure in
hydraulic system by open and off of the poppet sealed with seat, and the spring seat position is located by the spring.
The DBD10 subplate operated pressure relief valve with pressure as a signal to change the amount of compression of the spring, through changing the
valve oil port opening area and the volume of system
pressure relief to achieve the purpose of the fixed pressure.
Rexroth DBD10 Subplate Mounting CE Certificated Directive 97/23/EC Direct Operated Pressure Relief Valve
When the system pressure increases, the spool moves forward, increasing flow area of the valve port, the system flow rate increases, which makes the system pressure drop.
The Rexroth DBD10 direct operated pressure relief valve balance and movement of the spool is constituted by this negative feedback effect is the basic principle of the constant pressure, but also all the basic working principle of the presetting pressure relief valve.
It direct proportion to the size of the adjustment pressure relief of the spring force, so if improve the control pressure, and available on the one hand to reduce the area of the spool, on the other hand need to increase the spring force, due to structural constraints, the need to use a fine strength springs.