Bosch REXROTH DBD - Function, section, symbol


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
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Pressure relief valve | DBD 3/12
RD 25710, edition: 2016-07, Bosch Rexroth AG
Function, section, symbol
Pressure valves of type DBD are direct operated pressure
relief valves to be installed in block designs. They are used
for limiting 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 ① 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 ②.
Type DBDS 4 K1X/.V
1
= Main port 1 (P)
2
= Main port 2 (T)