DBET-6X/350YG24-8K4V-7
Manufacturer: Bosch Rexroth
Material #: R901369048
Model : DBET-6X/350YG24-8K4V-7
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth DBET-6X/350YG24-8K4V-7 (R901369048) is a direct-operated, seat-designed proportional pressure relief valve that is engineered for precise control of system pressure. This valve operates using a proportional solenoid with a central thread and a detachable coil, allowing for remote control operation. The interior of the solenoid is connected to port T or Y and is filled with hydraulic fluid. By varying the electric command value, the valve can seamlessly adjust system pressure within its limits.
The operation of this valve involves specifying a command value on the control electronics, which in turn modulates the electric current to the solenoid coil. This current generates mechanical force that acts on the armature plunger and subsequently on the valve poppet. The poppet interacts with the valve seat to regulate the connection between port P and T or Y. The balance between hydraulic force and solenoid force determines when the poppet lifts from its seat, allowing fluid to flow and thus controlling set pressure.
Designed for subplate mounting, this model conforms to ISO porting patterns and can be used with an amplifier that comes in various formats including modular design, Eurocard format, and as a plug-in amplifier. Users can benefit from features such as individually adjustable upward and downward ramps as well as fine-tuning capabilities for command value pressure characteristic curves. With its robust design, this valve ensures reliable performance in various applications where precise pressure control is essential. The DBET-6X series boasts impressive specifications including a maximum operating pressure of 350 bar and a maximum flow rate that accommodates specific application requirements.
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General information
Proportional pressure relief valves of type DBET are remote control valves with seat design and are used for system pressure limitation. Operation by means of a proportional solenoid with central thread and detachable coil. The interior of the solenoid is connected to port T or Y and is filled with the hydraulic fluid. Dependent on the electric command value, these valves can be used to steplessly set the system pressure to be limited. The valves mainly consist of the housing (1), a proportional solenoid (2), the valve seat (3) and the valve poppet (4).
Basic principle
For the setting of the system pressure, a command value is specified at the control electronics. Dependent on the command value, the electronics actuate the solenoid coil with electric current. The proportional solenoid converts the electric current into mechanical force that acts on the valve poppet (4) via the armature plunger (5). The valve poppet (4) pushes onto the valve seat (3) and blocks the connection between port P and T or Y. If the hydraulic force on the valve poppet (4) equals the solenoid force, the valve controls the set pressure by lifting the valve poppet (4) off the valve seat (3) and thus enabling hydraulic fluid to flow from port P to T or Y. If the command value is zero, the control electronics only apply the minimum control current to the proportional solenoid (2) and the minimum set pressure is set.
Type DBET
(measured with HLP46, ϑOil = 40 ±5 °C)
Pressure in port P dependent on the command value (flow = 0.8 l/min)
| 1) | 1) With valve type DBET, the manufacturing tolerance at the external amplifier can be changed using the command value attenuator potentiometer "Gw". The digital amplifier is set using the "Limit” parameter. Here, the control current according to the technical data must not be exceeded. In order to be able to adjust several valves to the same characteristic curve, do not set the pressure higher than the maximum set pressure of the pressure rating with command value 100%. |
Pressure in port P dependent on command value /Comparison DBET series 5X-6X / Pressure rating 200 bar (with amplifier VT-VSPA-1-1X with 800 mA coil)
Current drop with increasing ambient temperature, 24 V and 100% duty cycle
| 1) |
Notice: With increased temperature, the solenoid current will drop. Thus, the set pressure differs accordingly. |
Pressure rating 50 bar
Pressure rating 100 bar
Pressure rating 200 bar
Pressure rating 315 bar
| 1) | In case of characteristic curve 5, the command value may not exceed the maximum flow of 1.4 l/min |
Pressure rating 350 bar
| 1) | In case of characteristic curve 5, the command value may not exceed the maximum flow of 0.8 l/min |
Pressure rating 420 bar
| 1) | In case of characteristic curve 5, the command value may not exceed the maximum flow of 0.8 l/min |
Pressure rating 50 bar
Pressure rating 100 bar
Pressure rating 200 bar
Pressure rating 315 bar
Pressure rating 350 bar
Pressure rating 420 bar
Notice:
The characteristic curves were measured without counter pressure in port T. (Pt = 0 bar)
Minimum control current ≤ 100 mA
(This current is reached with a command value of 0 V and/or 4 mA.)
Pilot oil return, internal
Pilot oil return, external
Connection at mating connector
Connection at the connector
Dimensions in mm
|
1 |
Proportional solenoid |
|
2 |
Valve housing |
|
3 |
Name plate |
|
4 |
Identical seal rings for ports A, B, P, and T |
|
5 |
mating connector according to DIN EN 175301-803 |
|
6 |
Space required to remove the mating connector |
|
7 |
Blind counterbores A and B |
|
8 |
With version ..Y.. (external pilot oil return) port Y is internally connected to port T. Port T is not plugged. |
|
9 |
Machined valve contact surface; porting pattern according to ISO 4401-03-02-0-05 |
Recommended valve mounting screws (separate order):
4 hexagon socket head cap screws ISO 4762 - M5 x 45 - 10.9-flZn-240h-L
Tightening torque MA = 7 Nm ± 10%; material no. R913000140
Mating connectors for valves with connector “K4”, without circuitry, standard
3P Z4
Mating connectors for valves with connector “K4”, without circuitry, standard
3P Z4
For valves with connector “K4” according to EN 175301-803 and ISO 4400, 2-pole + PE, “large cubic connector” Mating connectors for valves with one or two solenoids (individual connection)Data sheet
Spare parts & repair
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