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BOSCH REXROTH
DBET-6X/315YG24K4V
R901065547
Proportional Pressure Relief Control Valves

Prop.press.valves: DBE* .-6/

$1,615.00

BOSCH REXROTH

MATERIAL:  R901065547

SUMMARY:  Prop.press.valves: DBE* .-6/

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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

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

01

02

03

04

05

06

07

08

09

DBET

6X

/

G24

K4

*

01

Proportional pressure relief valve for external control electronics

DBET

02

Component series 60 … 69 (60 … 69: unchanged installation and connection dimensions)

6X

Maximum pressure rating

03

Up to 50 bar

50

Up to 100 bar

100

Up to 200 bar

200

Up to 315 bar

315

Up to 350 bar

350

Up to 420 bar

420

04

Pilot oil return, internal

no code

Pilot oil return, external

Y

05

Direct voltage 24 V

G24

06

1600 mA coil

no code

800 mA coil (only possible for DBET-6X (external control electronics)

-8 1)

Electrical connection

07

Without mating connector; connector DIN EN 175301-803

K4

Seal material

08

NBR seals

M

FKM seals

V

Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)

09

Further details in the plain text

*

1)

Replacement for series 5X. (Attention! External amplifiers only suitable for G24 = 1.6 A solenoid),

For applications outside these parameters, please consult us!

general

Type

DBET

Size

6

Component series

6X

Weight

kg

2

Installation position

Any

Ambient temperature range

°C

-20 … +70

hydraulic

Type

DBET

Maximum operating pressure

Port P

bar

420

Return flow pressure

Port T (Y)

separate and depressurized to the tank

Maximum set pressure

Pressure rating 50 bar

bar

50

Pressure rating 100 bar

bar

100

Pressure rating 200 bar

bar

200

Pressure rating 315 bar

bar

315

Pressure rating 350 bar

bar

350

Pressure rating 420 bar

bar

420

Minimum set pressure 1)

at a command value of 0

See characteristic curves

Maximum flow 2)

l/min

2

Hydraulic fluid

see table

Hydraulic fluid temperature range

°C

-20 … +80

Viscosity range

mm²/s

20 … 380

preferably

mm²/s

30 … 46

Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 3)

Class 20/18/15 according to ISO 4406 (c)

Hysteresis 4)

%

< 4

Range of inversion 4)

%

< 0.5

Response sensitivity 4)

%

< 0.5

Linearity 4)

%

± 3

Manufacturing tolerance of the command value pressure characteristic curve, related to 0.8 l/min; pressure increasing

at command value 20  % 5)

%

< ± 1.5

at command value 100  % 6)

%

< ± 5

Step response

0% → 100% 7)

ms

80

100% → 0% 7)

ms

80
1) at command value 0 V or 4 mA
2) Observe flow limitation for pressure ratings 315, 350 and 420 bar.
3) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. For the selection of the filters, see www.boschrexroth.com/filter.
4) Of the maximum set pressure
5) Of the maximum set pressure, zero point calibration at the factory
6) of the maximum set pressure, comparison possible at the external control electronics
7) Line volume < 20 cm3; qV = 0.8 l/min; depending on the system

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Mineral oils and related hydrocarbons

HL, HLP

NBR / FKM

DIN 51524

Bio-degradable   - insoluble in water

HEES

FKM

VDMA 24568

Flame-resistant   - water-free

HFDU

FKM

ISO 12922

Flame-resistant   - containing water

HFC (Fuchs HYDROTHERM 46M, Petrofer Ultra Safe 620)

NBR

ISO 12922

Important information on hydraulic fluids:

For more information and data on the use of other hydraulic fluids please contact us.

There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.).

The flash point of the process and operating medium used must be 40 K over the maximum solenoid surface temperature.

Flame-resistant - containing water:
Maximum pressure differential per control edge 210bar, otherwise increased cavitation erosion.
Life cycle as compared to operation with mineral oil HLP 30% to 100%
Maximum fluid temperature 60°C

Bio-degradable: When using hydraulic fluids that are simultaneously zinc-solving, zinc may accumulate (700 mg zinc per pole tube).

electrical

Type

DBET

Minimum solenoid current

with 1600 mA - coil

mA

≤ 100

with 800 mA - coil

mA

≤ 100

Maximum solenoid current

with 1600 mA - coil

mA

1760

with 800 mA - coil

mA

840

Solenoid coil resistance

Cold value at 20 °C

with 1600 mA - coil

Ω

5.5

with 800 mA - coil

Ω

20.6

Maximum hot value

with 1600 mA - coil

Ω

8.05

with 800 mA - coil

Ω

33

Duty cycle

%

100

Power supply

V DC

24

Supply voltage range

V DC

21 … 35

(measured with HLP46, ϑOil = 40 ±5 °C)

Pressure in port P dependent on the command value (flow = 0.8 l/min)

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/
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)

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Current drop with increasing ambient temperature, 24 V and 100% duty cycle

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/
1) Notice:
With increased temperature, the solenoid current will drop. Thus, the set pressure differs accordingly.

Pressure rating 50 bar

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Pressure rating 100 bar

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Pressure rating 200 bar

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Pressure rating 315 bar

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/
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

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/
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

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/
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

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Pressure rating 100 bar

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Pressure rating 200 bar

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Pressure rating 315 bar

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Pressure rating 350 bar

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Pressure rating 420 bar

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

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

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Pilot oil return, external

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Connection at mating connector

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Connection at the connector

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

Dimensions in mm

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

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
Deviating from the standard:
– Without locating pin
– channel A and B not drilled

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

technical illustration-DBET-6X/315YG24K4V-Prop.press.valves: DBE* .-6/

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