Inhalt
Features 1
Ordering code 2
Ordering code 3
Model code 4
General circuit example set-up 5
Circuit examples: for displacement pumps (selection) 6
Circuit examples: for variable displacement pumps
(selection) 7
Circuit examples: for variable displacement pumps
(selection) 8
Circuit examples: for variable displacement pumps
(selection) 9
Function, sections: TypeDBA… 10
Function, sections: TypeDBAW… 11
Function, sections: Type DBAE(E)… and DBAEA… 12
Technical data
(For applications outside these values, please consult
us!) 13
Technical data
(For applications outside these values, please consult
us!) 14
Characteristic curves
(measured with HLP46, ϑ
oil
=40 ±5°C) 15
Characteristic curves
(measured with HLP46, ϑ
oil
=40 ±5°C) 16
Dimensions: TypeDBA…
(dimensions inmm) 17
Dimensions: TypeDBAW…
(dimensions inmm) 18
Dimensions: TypeDBAW…Z…
(dimensions inmm) 19
Dimensions: TypeDBAE…
(dimensions inmm) 20
Dimensions: TypeDBAEE…
(dimensions inmm) 21
Dimensions: TypeDBAEA…
(dimensions inmm) 22
Dimensions
(dimensions inmm) 23
Dimensions 24
Admissible pumps: Standard flange "F" 25
Admissible pumps: High-pressure flange "H" 26
Ordering code: Type-examination tested safety valves
typeDBA…E, component series 2X
according to Pressure Equipment Directive 2014/68/EU 27
Safety instructions: Type-examination tested safety
valves typeDBA…E, component series 2X
according to Pressure Equipment Directive 2014/68/EU 28
Deviating technical data: Type-examination tested safety
valve typeDBA…E,
Component series 2X, according to the Pressure Equip-
ment Directive2014/68/EU 28
Safety instructions: Type-examination tested safety
valves typeDBA…E, component series 2X
according to Pressure Equipment Directive 2014/68/EU 29
Safety instructions:Type-examination tested safety valves
typeDBA…E, component series 2X
according to Pressure Equipment Directive 2014/68/EU 30
Mating connectors according to DINEN175301-803 for
connector "K4" 31
Mating connectors according to DINEN175301-803 for
connector "K14" 31
General information 31
Further information 32
RE25891, edition: 2021-08, BoschRexrothAG
Features
▶ Depressurized start-up and circulation of the pump
▶ Intended for direct mounting onto the SAE pressure
port of the pump
▶ Low circulation pressure due to short distance
▶ Low compression volume for soft switching to
depressurized circulation
▶ Quick pressure build-up
▶ Low noise level due to direct flange mounting
onto the pump
▶ CE conformity according to the Low-Voltage Directive
2014/35/EU for electrical voltages >50VAC or
>75VDC
▶ Solenoid coil as approved component with UR marking
according to UL 906, edition 1982, optional
▶ Size16, 25, 32
▶ Component series 2X
▶ Maximum operating pressure 350bar
▶ Maximum flow 400l/min
H5872
Contents
Features 1
Ordering code 2, 3
Model code 4
General circuit example set-up 5
Circuit examples 6 … 9
Function, sections 10 … 12
Technical data 13, 14
Characteristic curves 15, 16
Dimensions 17 … 24
Admissible pumps: 25, 26
Mating connectors 31
General information 31
Type-examination tested safety valves typeDBA…E
according to Pressure Equipment Directive 2014/68/EU
Ordering code 27
Safety instructions 28
Deviating technical data 28
Diagrams 29, 30
Pump safety block
TypeDBA, DBAW, DBAE, DBAEE, DBAEA
RE25891 
Edition: 2021-08
Replaces: 2017-07
2/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Ordering code
01 Pump safety block DBA ◊
02 Without directional valve no code ◊
With mounted directional spool valve (datasheet23178) W ◊
With mounted proportional pressure relief valve for external control electronics, TypeDBET-6X/.Y…
1)
E
With mounted proportional pressure relief valve with integrated control electronics, TypeDBETE-6X/.Y…
1)
EE
With mounted proportional pressure relief valve (pressure-controlled) with integrated control electronics,
typeDBETA-6X/…
EA
03 Size16 15 ◊
Size25 25 ◊
Size32 30 ◊
04 Without directional valve no code ◊
With mounted directional valve, normally closed A
2)
With mounted directional valve, normally open; generally typeDBAE(E) B
2)
◊
Typeof connection / SAE ange
3)
05 Standard flange(250…350bar) F ◊
High-pressure flange(350bar) H ◊
Adjustment typefor pressure adjustment
4)
06 Rotary knob 1
Bushing with hexagon and protective cap 2 ◊
Lockable rotary knob with scale 3
5)
Rotary knob with scale 7
07 Without pressure switch –
With mounted pressure switch typeHED 8 OH…(connector according to DINEN175301-803,
without mating connector), (datasheet50061)
D
6)
08 Component series 20…29(20…29: unchanged installation and connection dimensions) 2X
Pressure rating
8)
09 Set pressure up to 50bar 50
Set pressure up to 100bar 100
Set pressure up to 200bar 200 ◊
Set pressure up to 250bar (only NG32 and standard flange "F") 250
Set pressure up to 315bar 315 ◊
Set pressure up to 350bar 350
7)
◊
10 Without additional pressure relief valve no code ◊
With mounted pressure relief valve typeZDB 6 VB…-4X/..SO2 (datasheet25751) Z
8; 9)
With mounted pressure relief valve typeZ2DB 6 VC…-4X/..SO2 (datasheet25751) ZZ
8; 10)
11 Standard version no code ◊
Valve for minimum cracking pressure (not with typeDBAE(E)(A)) U
12 Without directional valve no code ◊
With directional spool valve (only typeDBAW) 6E
2)
◊
13 DC voltage 24V (in general with version "DBAE(E)(A)…") G24
2)
◊
DC voltage 205 V G205
2)
AC voltage 230V 50/60 Hz W230
2)
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20
DBA 2X /
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 3/32
RE25891, edition: 2021-08, BoschRexrothAG
Ordering code
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20
DBA 2X /
14 With concealed manual override(standard) N9
11; 12)
◊
With manual override N
11; 12)
Without manual override no code ◊
Electrical connection
1)
15 Individual connection
Without mating connector; connector DINEN175301-803 K4
6)
◊
Without mating connector; connector DINEN175201-804 (only version "DBAEE…") K31
6)
Electronics interface
16 Without electronics (versions "DBA…" and "DBAW") no code ◊
Command value 0 ... 10V (only version "DBAEE" and "DBAEA") A1
Command value 4 ... 20mA (only version "DBAEE" and "DBAEA") F1
External control electronics (only version "DBAE") H1
Nozzle tting
17 Displacement pumps
Lateral channel closed, transverse channel open, pilot oil bore open; (standard for displacement pumps;
pure DB-/DBW function)
no code ◊
Variable displacement pumps
Lateral channel closed, transverse channel open, pilot oil bore closed (e.g.for axial piston variable displacement
pump typeA4VSO140 with DRG controller)
A00
Nozzle Ø0.8mm in lateral channel, transverse channel open; pilot oil bore closed (standard for control pumps with
DFR1 or DFLR controller)
A08
13)
◊
Nozzle Ø1.0mm in lateral channel, transverse channel open; pilot oil bore closed (for nozzle fitting of the block,
refer to the circuit examples on page6…8)
A10
13)
Seal material (observe compatibility of seals with hydraulic fluid used, seepage14)
18 NBR seals no code ◊
FKM seals V
Type-examination procedure
19 Without type-examination procedure no code ◊
Type-examination tested safety valve according to PED 2014/68/EU E
20 Standard solenoid coil no code ◊
Solenoid coil is an approved component with UR-marking according to UL 906 (only version "6E") =UR
Notice: ◊ = Preferred type
1)
Externally discharge the pilot oil from the proportional pressure
relief valve typeDBET(E)
2)
Ordering code only necessary for versions with mounted
directional spool valve "DBAW" or proportional pressure relief
valve "DBAE", "DBAEE" and "DBAEA".
3)
Please observe pressure ratings and connection dimensions
on page23.
4)
Adjustment typefor pressure switch typeHED 8 in brackets.
5)
H-key with material no. R900008158 is included in the scope
of delivery.
6)
Mating connectors, separate order, seepage31 and/or
page21 for version "DBAEE" and "DBAEA".
7)
Not version"Z" and "ZZ".
8)
The same pressure rating at pressure limitation screw-in cartridge
valves typeDB 20 K, pressure relief valve (sandwich plate valve)
typeZ(2)DB 6 and pressure switches typeHED 8.
9)
Not version"DBA..A"
10)
Only if used for pressure limitation and control of variable
displacement pumps typeA10VSO
11)
Notice: Accidental activation of the manual overridemay lead to
uncontrolled machine movements.
12)
Ordering code only required for versions with mounted
directional spool valve "DBAW".
13)
If used on variable displacement pumps with DFLR controllers,
the nozzle at port X of the pump control must be removed.
4/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Model code
1)
For version "DBAW" with pressure relief valve typeZ(2)DB
2)
For version "DBAW" without pressure relief valve typeZ(2)DB
3)
For version "DBAE" for external electronic controls/amplifier card
4)
For version "DBAEE" with internal electronic controls/amplifier card
02 07 10 17.1 17.2 17.3
Cover plate HSA 06A 001 ...
4WE 6 H 6X..
4WE 6 HB 6X..
4WE 6 L37B.6X/..
DBET-6X/.Y.K4
DBETE-6X/.Y.K31
DBETA-6X/…
HED 8 OH 2X/...K14..
ZDB 6 VB.-4X/...SO2
Z2DB 6 VC.-4X/...SO2
Nozzle Ø0.8 in lateral channel
Nozzle Ø1.0 in lateral channel
Plug in lateral channel
Plug in pilot oil bore/cartridge
Nozzle Ø0.8 in pilot oil bore/cartridge
Plug in pilot oil bore
01 DBA X
02 W X X X
E X X
EE X X
EA X X X
04 A (normally closed) X
B (normally open) X
1)
X
2)
X
3)
X
4)
07 – (without pressure switch) –
D (with pressure switch) X
10 – (standard valve
5)
) – –
Z (max.2 pressure
limitations)
X
ZZZ (max.3 pressure
limitations)
X
17 no code
6)
X
A00 X X
A08 X X
A10 X X
C08 X X
01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20
DBA 2X / *
5)
Only 1 pressure limitation
6)
Standard for displacement pumps
General circuit example set-ups can be found on
page5.
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 5/32
RE25891, edition: 2021-08, BoschRexrothAG
General circuit example set-up
Symbol Disposition of nozzles/plugs
item 17.1, 17.2 and 17.3
07
17.1 17.2
10 10
02
17.3
MP
A
X
B
B
X
TP
A
T
1)
17.2
M
17.1
X
17.3
1)
Only typeDBAE(E)
Model codes can be found on page4.
6/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Circuit examples: for displacement pumps (selection)
TypeDBA… Type DBAW.B…Z
A
PM
P1
X
B
T
A
P1
X
B
B
ba
A
TP
A
B
T
PM
Type DBAW.A… TypeDBAE(E)…
A
B
X
B
P1
A
TP
MP
T
X
AB
PM
Y
1)
P1
P
T
Type DBAW.B…
BA
B
X
MP
P1
A
TP
T
1)
Notice:
PortY of the proportional pressure relief valve typeDBET
mounted on the pump safety block typeDBA must be connected
to the tank in adepressurized way (possibly by means of the
drain line of the hydraulic system).
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 7/32
RE25891, edition: 2021-08, BoschRexrothAG
Circuit examples: for variable displacement pumps (selection)
Type DBAW.B…A08 Type DBAW.B…Z…A08
XMP
X
A
B
B
P1
A
TP
T
X
ab
PM
A
P1
X
B
BA
TP
A
B
T
Type DBAE(E)…A08 Type DBAW.B…ZZ…A08
X
AB
PM X
Y
1)
P1
P
T
T
MPX
P1
B
X
A
B
ba
A
TP
A
B
A
B
T
1)
Notice:
PortY of the proportional pressure relief valve typeDBET
mounted on the pump safety block typeDBA must be
connected to the tank in adepressurized way (possibly by
means of the drain line of the hydraulic system).
2)
Notice:
If used on variable displacement pumps with DFLR
controllers, the nozzle at port X of the pump control must be
removed.
▶ Preferably for axial piston variable displacement pumps typeA10VSO with DR, DFR1 or DFLR controller
2)
8/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Circuit examples: for variable displacement pumps (selection)
Type DBAW.B…Z…A00
MPX
ab
P1
X
A
B
B
A
TP
T
A
B
Type DBAW.B…ZZ…A00
MP
P1
A
X
B
B
X
ab
TP
A
A
B
A
B
T
▶ Preferably for axial piston variable displacement pumps typeA10VSO with DRG controller
1)
Notice:
PortY of the proportional pressure relief valve
typeDBET mounted on the pump safety block typeDBA
must be connected to the tank in adepressurized way
(possibly by means of the drain line of the hydraulic system).
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 9/32
RE25891, edition: 2021-08, BoschRexrothAG
Circuit examples: for variable displacement pumps (selection)
Type DBAE(E)…A00
X
AB T
T
MPX
Y
1)
P
P1
Type DBAEA…A00
MPX
P1
X
PT
T
▶ Preferably for axial piston variable displacement pumps typeA10VSO with DRG controller
1)
Notice:
PortY of the proportional pressure relief valve
typeDBET mounted on the pump safety block typeDBA
must be connected to the tank in adepressurized way
(possibly by means of the drain line of the hydraulic system).
P1
16513
14
T
P
M
28712
11 1094
41
11
016
59
T
P
P1
M
2871213
3
10/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Function, sections: TypeDBA…
General
Pump safety blocks typeDBA are pilot-operated pressure
relief valves which are integrated into ablock and intended
to be mounted directly onto SAE pressure ports of pumps.
They are used for limiting (typeDBA) or limiting and
solenoid-actuated relief (typeDBAW, DBAE) of the
operating pressure.
Pump safety blocks generally consist of valve block(1)
and pressure limitation screw-in cartridge valve
typeDB 20 K(2) (datasheet25818). Optionally, apressure
switch typeHED 8(3) (datasheet50061) can be installed
on the valve block.
The valve housing is equipped with aportP for hydraulic
fluid input and port P1 for hydraulic fluid output.
In abranch of the through connection between these two
ports, the pressure limitation screw-in cartridge valve can
be found. By opening this valve, aconnection to portT
(tank line) is established.
In standard version, connection diagram NG6 is covered
with the cover plate(4). The pressure in the through
connection (P - P1) has an effect on the main control
spool(5) of the pressure limitation screw-in cartridge
valve. Via the nozzle bores(6 and 7), the pressure is at the
same time applied to the
poppet(8). If the pressure in portP
exceeds the value set at spring(9),
the poppet(8) opens against the
spring(9).
TypeDBA 15 .2 –2X/…
TypeDBA 15 .2 D2X/…
Via the nozzle bores(6 and 7), the hydraulic fluid from
channelP flows into the spring chamber(10) and is here
internally directed via the control line(11) into the tank.
Due to the state of equilibrium at the main control
spool(5), hydraulic fluid flows from channelP to
channelT, maintaining the set operating pressure.
A pressure gauge connection(12) allows for the control of
the operating pressure.
Pump safety block typeDBA…D (with pressure switch)
The use of an electrical pressure switch typeHED 8(3)
(datasheet50061) enables activation and deactivation of
an electric circuit via the control line(13).
In standard version, the control line(13) is closed with
aplug screw(14).
The pressure gauge connection M
and tank portT are illustrated with
an offset of 90°.
16
15
15
AP
(T)
B
AP
TP
(T)
B
P
P1
X
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 11/32
RE25891, edition: 2021-08, BoschRexrothAG
Function, sections: TypeDBAW…
Pump safety block typeDBAW
The function of this block basically corresponds to the
function of block typeDBA…. Relief of the main control
spool, however, is achieved by controlling the mounted
directional valve(15). In this case, no cover plate(4)
is required.
Pump safety block typeDBAW.B…Z…for displacement
pumps (with pressure relief valve)
In general, the function corresponds to typeDBAW….
By means of the pressure relief valve typeZDB 6(16)
(datasheet25751) and actuation of the directional
valve(15), the pilot control of the pressure limitation
screw-in cartridge valve typeDB 20 K is deactivated and
the pressure set at the pressure relief valve typeZDB 6 is
activated. The pressure adjustment at the pressure relief
valve typeZDB 6 only works if it is below the setting of the
pressure limitation screw-in cartridge valve typeDB 20 K.
TypeDBAW 15 .2–2X/.Z…
TypeDBAW 15 .2–2X/…
Pump safety block typeDBAW.B…Z…A for control pump
A10V…(with pressure relief valve)
In general, the function corresponds to typeDBAW….
By means of the pressure relief valve typeZDB 6(16)
(datasheet25751) and by actuation of the directional
valve(15), apressure change is achieved at control port X.
The pressure change set at the pressure relief valve
typeZDB 6 acts on the controller of the pump. The pressure
adjustment at the pressure relief valve typeZDB 6 only
works if it is below the setting of the pressure limitation
screw-in cartridge valve typeDB 20 K.
Pump safety block DBAW.B…ZZ…A for control pump
A10V.. (with pressure relief valve)
In general, the function corresponds to typeDBAW….
By means of the pressure relief valve typeZ(2)DB 6(16)
(datasheet25751) and by actuation of the directional
valve(15), two pressure adjustments are possible at
control port X. The pressure adjustment at the pressure
relief valve typeZ(2)DB 6 only works if it is below the
setting of the pressure limitation screw-in
cartridge valve typeDB 20 K.
Illustration rotated by 90°
PortX is illustrated
with an offset of 90°.
P
P1
X
P
17
TP
Y
12/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Function, sections: Type DBAE(E)… and DBAEA…
Pump safety block typeDBAE(E) for displacement pump
(with proportional pressure relief valve)
In general, the function corresponds to typeDBA….
Relief at the main control spool, however, is achieved by
control of the mounted proportional pressure relief valve
typeDBET(E)-6X/.Y…(17) (datasheet29162). The cover
plate(4) is not required.
TypeDBAE…2X/…
TypeDBAEE …2X/…
The pressure adjustment at the proportional pressure
relief valve typeDBET(E) only works if it is below the
setting of the pressure limitation screw-in cartridge valve
typeDB 20 K.
Pump safety block typeDBAE(E) and DBAEA for
variable displacement pumps typeA10V..
(with proportional pressure relief valve)
In general, the function corresponds to typeDBA….
By means of the proportional pressure relief valve
typeDBET(E)(A)-6X/.Y…(17), apressure change is
achieved at the control port X. The pressure change
acts on the controller of the pump. The cover plate(4)
is not required.
The pressure adjustment at the proportional pressure
relief valve typeDBET(E)(A) only works if it is below the
setting of the pressure limitation screw-in cartridge valve
typeDB 20 K.
At typeDBAEA, pump control is pressure-controlled.
This way, linear and stable behavior as well as increased
accuracy of pump adjustment can be achieved.
PortY must be connected to the
tank in adepressurized way
(possibly by means of the drain line
of the hydraulic system).
PortX is
illustrated with
an offset of 90°.
Illustration rotated by 90°
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 13/32
RE25891, edition: 2021-08, BoschRexrothAG
Technical data
(For applications outside these values, please consult us!)
1)
Tank preloading(30bar) to be added to the minimum set
pressure. A short-time, static pressure of 300bar is admissible.
2)
The cleanliness classes specified for the components must be
adhered to in hydraulic systems. Effective filtration prevents
faults and at the same time increases the life cycle of
the components.
General
Size NG 16 25 32
Weight of SAE flange "F" "H" "F" "H" "F" "H"
▶ Pump safety block – TypeDBA… kg 5.4 5.4 5.4 5.3 5.4 6.0
– TypeDBAW… kg 6.1 6.1 6.1 6.0 6.1 6.7
– TypeDBAW…Z… kg 7.9 7.9 7.9 7.8 7.9 8.5
– TypeDBAW…ZZ… kg 8.1 8.1 8.1 8.0 8.1 8.7
– TypeDBAE… kg 6.4 6.4 6.4 6.3 6.4 7.0
– TypeDBAEE… kg 7.0 7.0 7.0 6.9 7.0 7.6
– TypeDBAEA… kg 7.0 7.0 7.0 6.9 7.0 7.6
▶ Pressure switch – TypeHED 8… kg +0.8
Installation position any
Ambient temperature range NBR seals FKM seals
▶ TypeDBA… °C –30 … +80 –15 … +80
▶ TypeDBAW… °C –30 … +50 –15 … +50
▶ Type DBAE(E)(A)… °C –20 … +50 ‒15 … +50
Conformity CE according to Low-Voltage Directive 2014/35/EU tested according to
EN60204-1:2006-01 and DINVDE0580, classified as component
Hydraulic
Maximum operating pressure ▶ PortP bar 350
Maximum counter pressure – TypeDBA… bar 250
▶ PortT – TypeDBAW… bar 210 withDC solenoids(180 for version "=UR")
160 with AC solenoids
– TypeDBAEA… bar 30
1)
▶ PortY – TypeDBAE(E)… bar depressurized to the tank
Minimum set pressure bar flow-dependent (seecharacteristic curves page16)
Maximum set pressure bar 50; 100; 200; 250; 315; 350
Maximum flow l/min 300 400 400
Hydraulic fluid seetable page14
Hydraulic fluid temperature
range
NBR seals FKM seals
▶ Type DBA(W)… °C –30 … +80 –20 … +80
▶ Type DBAE(E)(A)… °C ‒20 … +80 –15 … +80
Viscosity range ▶ Type DBA(W)… mm
2
/s 10 … 800
▶ Type DBAE(E)(A)… mm
2
/s 20…380, preferably 30…46
Maximum admissible degree of contamination of the
hydraulic fluid cleanliness class according to ISO4406 (c)
Class 20/18/15
2)
For more technical data refer to the datasheets:
Directional spool valve 23178
Pressure relief valve (sandwich plate) 25751
Proportional pressure relief valve 29162, 29262
Corresponding amplifier (for typeDBAE)
typeVT-VSPA1-2-1X
30115
Pressure switch 50061
Deviating technical data for type-examination tested safety valves
can be found on page28.
14/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Technical data
(For applications outside these values, please consult us!)
Hydraulic fluid Classification Suitable sealing materials Standards Datasheet
Mineral oils HL, HLP NBR, FKM DIN 51524 90220
Bio-degradable ▶ Insoluble in water HETG
2)
FKM
ISO15380
90221HEES
1)
FKM
▶ Soluble in water HEPG
1; 2)
FKM ISO15380
Flame-resistant ▶ Water-free HFDU (glycol base)
2)
FKM
ISO 12922 90222HFDU (ester base)
2)
FKM
HFDR
2)
FKM
▶ Containing water HFC(Fuchs: Hydrotherm46M,
Renosafe500;
Petrofer: UltraSafe620;
Houghton: Safe620;
Union: CarbideHP5046)
NBR
ISO 12922 90223
Important information on hydraulic uids:
▶ For further information and data on the use of other hydraulic
fluids, please refer to the datasheets above or contact us.
▶ There may be limitations regarding the technical valve data
(temperature, pressure range, life cycle, maintenance
intervals, etc.).
▶ The ignition temperature of the hydraulic fluid used must be 50K
higher than the maximum surface temperature.
▶ Bio-degradable and flame-resistant–containing water:
If components with galvanic zinc coating (e.g.version"J3" or "J5")
or parts containing zinc are used, small amounts of dissolved zinc
may get into the hydraulic system and cause accelerated aging of
the hydraulic fluid. Zinc soap may form as achemical reaction
product, which may clog filters, nozzles and solenoid
valves–particularly in connection with local heat input.
▶ Flame-resistant–containing water:
– Due to the increased cavitation tendency with HFC hydraulic
fluids, the life cycle of the component may be reduced by
up to 30% as compared to the use with mineral oil HLP.
In order to reduce the cavitation effect, it is recommended–if
possible specific to the installation–backing up the return
flow pressure in portsT to approx.20% of the pressure
differential at the component.
– Dependent on the hydraulic fluid used, the maximum ambient
and hydraulic fluid temperature must not exceed 50°C.
In order to reduce the heat input into the component,
the command value profile is to be adjusted for proportional
and high-response valves.
– Dependent on the hydraulic fluid used, the maximum ambient
and hydraulic fluid temperature must not exceed 50°C. In order
to reduce the heat input into the component, amaximum duty
cycle of 50% in continuous operation has to be set for on/off
valves (measuring time 300s). If this is impossible due to the
function, an energy-reducing control of these components is
recommended, e.g.via aPWM plug-in amplifier.
1)
Not for version "DBAE(E)"
2)
Not for version "DBAEA"
0
1
2
3
5
10
15
20
25
30
35
40
100 200 300 40050 150 250 350
0
1
2
3
5
10
15
20
25
30
35
40
100 200 300 40050 150 250 350
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 15/32
RE25891, edition: 2021-08, BoschRexrothAG
Minimum set pressure,
circulation pressure inbar →
Flow inl/min →
Standard version
1 NG16
2 NG25
3 NG32
Minimum set pressure,
circulation pressure inbar →
Flow inl/min →
Version "U"
1 NG16
2 NG25
3 NG32
Characteristic curves
(measured with HLP46, ϑ
oil
=40 ±5°C)
1)
The characteristic curves apply for output pressure p
T
=0 bar in
the entire flow range.
Notice:
The characteristic curves were measured with internal pilot
oil return.
With internal pilot oil return, the inlet pressure increases by the
output pressure present in port T.
Minimum set pressure and circulation pressure dependent on the ow
1)
0
1
2
1 NG16
2 NG25, 32
DBA…Z…,
DBA…ZZ…,
DBAE(E)(A)…
DBA,
DBAW
100 200 300 40050 150 250 350
50
100
150
200
250
300
350
400
16/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Characteristic curves
(measured with HLP46, ϑ
oil
=40 ±5°C)
Inlet pressure inbar →
Flow inl/min →
Inlet pressure dependent on the ow
1)
1)
The characteristic curves apply for output pressure p
T
=0 bar in
the entire flow range.
Notice:
The characteristic curves were measured with internal pilot
oil return.
With internal pilot oil return, the inlet pressure increases by the
output pressure present in port T.
H5
H1
L1
L2
4 x ØD1
H2
H3
H4
B3
B4
B2
Ø1.38
L3
B6
B5
7
5
6
14
12
9
13
1011
28
10
3
982
B1
8
P
15
1
P1
M
X
342
24 25
T
99
48
Ø30
H6
32.5
34.5
103
48
1.5
145
31 26.3
65
40
100 18
15
15
40.5
Ø32
76
Rz1max 8
0.01/100
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 17/32
RE25891, edition: 2021-08, BoschRexrothAG
Item explanations can be found on page24.
Dimensions: TypeDBA…
(dimensions inmm)
Standard anges typeDBA…F…
NG L1 L2 L3 B1 B2 B3 B4 B5 B6 H1 H2 H3 H4 H5 H6 ØD1
16 88 117 22.2 47.6 28.5 45 80 110 105 24 47 22 60 37 85 11
25 88 115.5 26.2 52.4 28.5 45 80 110 105 24 47 22 60 37 85 11
32 108.5 108.5 30.2 58.7 30.5 47 80 110 105 30 47 20 64 41 89 11.5
High-pressure anges typeDBA…H…
NG L1 L2 L3 B1 B2 B3 B4 B5 B6 H1 H2 H3 H4 H5 H6 ØD1
16 88 117 23.8 50.8 28.5 45 80 110 105 24 47 22 60 37 85 11
25 84 115.5 27.8 57.2 28.5 45 80 110 105 24 47 22 60 37 85 13
32 108.5 108.5 31.8 66.7 26 52 90 115 110 30 50 20 64 41 89 15
Required surface quality of
the valve contact surface
B2
B8
H7
H6
B7
16
5
6
14
14
24
25
834
P
1518
19
18
19
17
26
28
1
M
X
T
P1
P
T
F1
F
2
F
3
F
4
57.3
206
3.5
3.5
14
14
15
15
Rz1max 8
0.01/100
18/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Item explanations can be found
on page24, Dimensions for pump
safety block, pressure switch
typeHED 8 and further adjustment
types can be found on page17.
Dimensions: TypeDBAW…
(dimensions inmm)
Standard anges typeDBAW…F…
NG B2 B7 B8 H6 H7
16 12 144.5 109.5 159 153
25 12 144.5 109.5 159 153
32 10 144.5 111.5 159 153
High-pressure anges typeDBAW…H…
NG B2 B7 B8 H6 H7
16 12 144.5 109.5 159 153
25 12 144.5 109.5 159 153
32 14.5 145 107 163 157
Required surface quality of
the valve contact surface
B2
H9
H8
3
82901
3
82901
912
11
10
2628
P1
P
T
834
1
15
M
X
P
T
16
5
6
14
14
13
20
24
25
F
1
F
2
F
3
F
4
228
2)
227
1)
256.5
2)
18
239
1)
294
1)
24
24
222
2)
57.3
15
15
Rz1max 8
0.01/100
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 19/32
RE25891, edition: 2021-08, BoschRexrothAG
Item explanations can be found
on page24, dimensions for pump
safety block, pressure switch
typeHED 8 and other adjustment
types can be found on page17,
dimensions for directional spool
valves typeWE can be found
on page18.
1)
Version "ZZ"
2)
Version "Z"
Required surface quality of
the valve contact surface
Standard anges typeDBAW..F…Z…
NG B2 H8 H9
16 12 199 193
25 12 199 193
32 10 199 193
High-pressure anges typeDBAW..H…Z…
NG B2 H8 H9
16 12 199 193
25 12 199 193
32 14.5 203 197
Dimensions: TypeDBAW…Z…
(dimensions inmm)
B10
B2 B9
F
1
F
2
F
3
F
4
H11
H10
22
5
24
25
M
X
6
14
T
T
P
P1
8341
P
15
2628
27
14
Y
15
57.3
15
Rz1max 8
0.01/100
20/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Dimensions: TypeDBAE…
(dimensions inmm)
Standard anges typeDBAE(E)…F
NG B2 B9 B10 H10 H11
16 12 18.8 158 161 155
25 12 18.8 158 161 155
32 10 20.8 158 161 155
High-pressure anges typeDBAE(E)…H
NG B2 B9 B10 H10 H11
16 12 18.8 158 161 155
25 12 18.8 158 161 155
32 14.5 16.3 169 166 160
Item explanations can be found on page24,
Dimensions for pump safety block, pressure switch
typeHED 8 and further adjustment types can be found
on page17.
Required surface quality of
the valve contact surface
H12
B10
B11
B2 B9
22
29
24
25
M
X
8341
P
15
T
27
T
P
26
14
21
23
28
Y
F
1
F
2
F
3
F
4
P1
57.3
15
Rz1max 8
0.01/100
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 21/32
RE25891, edition: 2021-08, BoschRexrothAG
Dimensions: TypeDBAEE…
(dimensions inmm)
Standard anges typeDBAE(E)…F
NG B2 B9 B10 B11 H12
16 12 18.8 158 225 175
25 12 18.8 158 225 175
32 10 20.8 158 225 175
High-pressure anges typeDBAE(E)…H
NG B2 B9 B10 B11 H12
16 12 18.8 158 225 175
25 12 18.8 158 225 175
32 14.5 16.3 169 235 179
Item explanations can be found on
page24, Dimensions for pump safety
block, pressure switch typeHED 8 and
further adjustment types can be found
on page17.
Required surface quality of
the valve contact surface
M
B2
H12
24
30
25
841
29
P1
X
3
160.5
57.3
Rz1max 8
0.01/100
22/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Dimensions: TypeDBAEA…
(dimensions inmm)
Standard anges typeDBAEA…F
NG B2 H12
16 12 174.5
25 12 174.5
32 10 174.5
High-pressure anges typeDBAEA…H
NG B2 H12
16 12 174.5
25 12 174.5
32 14.5 178.5
Item explanations can be found on
page24, Dimensions for pump safety
block, pressure switch typeHED 8 and
further adjustment types can be found
on page17.
Required surface quality of
the valve contact surface
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 23/32
RE25891, edition: 2021-08, BoschRexrothAG
Standard anges typeDBA…F…according to DINISO6162-1
NG Line connections 4 Valve mounting screws
ISO 4762 - 10.9
1)
Tightening
torque
M
A
inNm
2)
P and P1 T X, M Material no.
16 SAE 3/4" G3/4 G1/4 M10 x 95
R913015585 52
25 SAE 1" G1 G1/4 M10 x 95 R913015585 52
32 SAE 1 1/4" G1 1/4 G1/4 M10 x 95 R913015585 52
High-pressure anges typeDBA…H…according to DINISO6162-2
NG Line connections 4 Valve mounting screws
ISO 4762 - 10.9
1)
Tightening
torque
M
A
inNm
2)
P and P1 T X, M Material no.
16 SAE 3/4" G3/4 G1/4 M10 x 95 R913015585 52
25 SAE 1" G1 G1/4 M12 x 105 R913000659 66
32 SAE 1 1/4" G1 1/4 G1/4 M14 x 105 R913000660 113
Dimensions
(dimensions inmm)
Admissible pressures
(Flange connection according to
DINISO6162-1)
in psi in bar
SAE 3/4" 5000 350
SAE 1" 4500 315
SAE 1 1/4" 3600 250
Admissible pressures
(Flange connection according to
DINISO6162-2)
in psi in bar
SAE 3/4" 5000 350
SAE 1" 5000 350
SAE 1 1/4" 5000 350
1)
Valve mounting screws (separate order)
4 hexagon socket head cap screws ISO4762 - 10.9
(with friction coefficient µ
total
=0.09…0.14)
Notice:
For reasons of stability, other valve mounting screws
must not be used.
Depending on the operating pressure, flange height and thread
depth of the pump plate, other screw lengths may be necessary.
2)
Notice:
The tightening torques stated are guidelines when using
screws with the specified friction coefficients and when using
amanual torque wrench (tolerance±10%).
24/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Dimensions
1 Name plate
2 Cover plate typeHSA 06 A001-3X… (datasheet48042)
3 PortX for variable displacement pump typeA10VSO
(otherwise closed); G1/4
4 Internal hexagon SW6, tightening torque M
A
= 30 Nm
(For tightening, amanual torque wrench with atolerance
of ≤10% must be used.)
5 Mating connector without circuitry (separate order,
seepage31)
6 Mating connector with circuitry (separate order,
seepage31)
7 Pressure switch typeHED 8 OH…(datasheet50061)
8 Adjustment type"1"
1)
9 Adjustment type"2"
1)
10 Adjustment type"3"
1)
11 Adjustment type"7"
1)
12 Hexagon SW10
13 Space required to remove the key
14 Space required for removing the mating connector
15 Seal ring
16 Directional spool valve typeWE 6 (datasheet23178)
17 Dimensions for solenoid with concealed manual override"N9"
(standard) – The manual overridecan only be operated up to
approx.50bar tank pressure. Avoid damage to the bore of the
manual override. (Special tool for the operation, separate
order, material no. R900024943)
18 Dimensions for valve with manual override"N"
19 Dimensions for valve without manual override
20 Pressure relief valve (sandwich plate) type Z(2)DB 6 …
(datasheet25751)
21 Dimensions for valve with integrated electronics
type DBAEE…
22 Proportional pressure relief valve type DBET(E)-6X.Y…
(datasheet29162)
23 Mating connector for typeDBAEE according to
DIN EN 175201804 (separate order, material no. R90021267)
24 Hexagon SW30, tightening torque M
A
=50Nm
(For tightening, amanual torque wrench with atolerance of
≤10% must be used.)
25 Lock nut SW22, tightening torque M
A
= 10
±5
Nm
26 Porting pattern according to DIN 24340 form A
(without locating hole), or ISO 4401-03-02-0-05
(with locating hole for locking pin ISO 8752-3x8-St,
material no. R900005694, separate order)
27 PortY (G1/4) must be connected to the tank in
adepressurized way (possibly by means of the drain line
L of the hydraulic system)
28 Valve mounting bores
29 Integrated electronics (OBE)
30 Proportional pressure relief valve type DBETA-6X…
(datasheet29262)
1)
Type DBAW…Z:
Identical adjustment types for pressure limitation screw-in
cartridge valve typeDB 20 K and pressure relief valve
type Z(2)DB 6.
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 25/32
RE25891, edition: 2021-08, BoschRexrothAG
Admissible pumps: Standard flange "F"
1)
When using the pump in combination with aSAE flange as pressure
connection, the ordering code of the pump contains "..07..".
2)
Depending on the drive motor, adistance plate may be required, e.g.
Height=23mm, material no. R900058716
or alternatively a90° plate:
Height=40mm, material no. R900241813
Pump safety block NG16 NG25 NG32
PortP Datasheet SAE 3/4" SAE 1" SAE 1 1/4"
Pump type
▶ Variable displacement pump
TypeA10VO, series 31 92701 A10VO28
–
A10VO45
A10VO71
–
–
TypeA10VO, series 5X 92703 A10VO28
–
A10VO45
A10VO60
–
–
TypeA10VSO, series 31 92711 A10VO28
–
AV10SO18
A10VSO45
A10VSO71
–
–
–
–
TypeA10VSO, series 32 92714 – A10VSO71 –
▶ Internal gear pump
TypePGF3, component series 3X
1)
10213 PGF3-3X/020
PGF3-3X/025
PGF3-3X/032
PGF3-3X/040
–
–
–
–
–
–
–
–
TypePGP3, component series 3X
1)
10231 PGP3-3X/032 – –
▶ Vane pump
2)
TypePV7, component series 1X 10515 –
–
–
–
PV7-1X/63-71
PV7-1X/63-94
26/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Admissible pumps: High-pressure flange "H"
1)
A direct pressure switch attachment opposite of the pressure
limitation screw-in cartridge valve typeDB 20 K is not possible!
2)
With charging pump
3)
Without charging pump
Pump safety block NG16 NG25 NG32
PortP Datasheet SAE 3/4" SAE 1" SAE 1 1/4"
Pump type
▶ Displacement pump
TypeA2FO, series 6 91401 A2FO45
A2FO56
A2FO63
–
–
A2FO80
A2FO90
A2FO107
–
–
A2FO125
A2FO160
A2FO180
A2FO200
A2FO250
TypeA4FO, series 1 91455 – A4FO71 –
TypeA4FO, series 3 91455 A4FO16
A4FO22
A4FO40
–
–
A4FO125
–
▶ Variable displacement pump
TypeA4VSO, series 1 92050 A4VSO40 A4VSO71 –
TypeA4VSO, series 3 92050 –
–
–
–
A4VSO125
A4VSO180
TypeA11VO, series 1 92500 A11VO40
A11VO60
–
A11VO75
A11VO95
A11VO130
3)
A11VO145
3)
A11VLO130
2)
A11VLO145
2)
–
–
TypeA10VSO, series 31
TypeA10VSO, series 32
92711
92714
–
–
–
–
A10VSO100
A10VSO140
TypeA10VO, series 31 92701 –
–
–
–
A10VO100
A10VO140
TypeA10VO, series 5X
1)
92703 – – A10VO85
TypeA7VO, series 6
1)
92202 A7VO28
A7VO55
A7VO80
A7VO107
A7VO160
–
TypeA7VO, series 6
1)
92203 – – A7VO250
▶ Adjustable double pump
TypeA8VO, series 6X 93010 A8VO55
–
–
A8VO80
A8VO107
A8VO140
A8VO200
–
–
▶ Internal gear pump
TypePGH4, PGH5, component series 2X 10223 PGH4-2X/020
PGH4-2X/025
PGH4-2X/032
PGH4-2X/040
PGH4-2X/050
PGH5-2X/063
–
–
PGH5-2X/080
PGH5-2X/100
PGH5-2X/125
–
TypePGH4, PGH5, component series 3X 10227 PGH4-3X/020
PGH4-3X/025
–
PGH4-3X/032
PGH4-3X/040
PGH4-3X/050
PGH5-3X/063
PGH5-3X/080
–
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 27/32
RE25891, edition: 2021-08, BoschRexrothAG
Ordering code: Type-examination tested safety valves typeDBA…E, component series 2X
according to Pressure Equipment Directive 2014/68/EU
NG Typedesignation Component marking
Maximum
admissible ow
q
Vmax
inl/min
with pilot oil
return
Pre-set
response
overpressure p
inbar
16
2 3 4 5 6 7
DBA 15 2X/ E
TÜV.SV.
–1001.14,4.F.G.p
60
100
150
200
250
30 … 60
61 … 110
111 … 210
211 … 315
316 … 350
1 2 3 4 5 6 7
DBAW 15 2X/ 6 * E
1 2 3 4 5 6 7
DBAE 15 2X/ 6 * E
1 2 3 4 5 6 7
DBAEE 15 2X/ 6 * E
25
2 3 4 5 6 7
DBA 25 2X/ E
TÜV.SV.
–1001.14,4.F.G.p
70
100
150
200
300
30 … 60
61 … 110
111 … 210
211 … 315
316 … 350
1 2 3 4 5 6 7
DBAW 25 2X/ 6 * E
1 2 3 4 5 6 7
DBAE 25 2X/ 6 * E
1 2 3 4 5 6 7
DBAEE 25 2X/ 6 * E
32
2 3 4 5 6 7
DBA 30 2X/ E
TÜV.SV.
–1001.14,4.F.G.p
70
100
150
200
300
30 … 60
61 … 110
111 … 210
211 … 315
316 … 350
1 2 3 4 5 6 7
DBAW 30 2X/ 6 * E
1 2 3 4 5 6 7
DBAE 30 2X/ 6 * E
1 2 3 4 5 6 7
DBAEE 30 2X/ 6 * E
Important safety instructions on page28.
1 Directional valve, normally closed A
Directional valve, normally open B
2 Standard flange(250bar) F
High-pressure flange(350bar) H
3 Hand wheel adjustment type
(pressure adjustment sealed, relief or setting
of alower response pressure possible.)
1
Adjustment typewith sealed protective cap
(no adjustment/relief possible)
2
4 With mounted pressure switch
typeHED 8 OH… (without mating connector)
D
Without pressure switch –
5 In the designation, the pressure is to be
entered by the customer, pressure adjustment
≥ 30bar and possible in 5-bar steps.
e.g.150
2./3. Pressure limiting function (seecircuit example
on page6 … 8)
6 Without additional pressure relief valve no code
With mounted pressure relief valve
typeZDB 6 VB…-4X/..SO2 (datasheet25751)
Z
With mounted pressure relief valve
typeZ2DB 6 VC…-4X/..SO2 (datasheet25751)
ZZ
Version DBAW…Z(Z)E and DBAE(E)…E are only available with
ordering code "A00", "A08" or "A10"
* Electrical data ordering codes can be found
on page2 and 3.
e.g.
EG24N9K4
7 NBR seals no code
FKM seals V
Value entered at the factory.
28/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
Safety instructions: Type-examination tested safety valves typeDBA…E, component series 2X
according to Pressure Equipment Directive 2014/68/EU
▶ Before ordering atype-examination tested safety valve,
it must be observed that for the desired response
pressure p, the maximum admissible ow q
Vmax
must be larger than the maximum possible flow of
the system to be secured.
In this respect, the applicable regulations
must be observed.
▶ According to PED 2014/68/EU, the increase in the
system pressure due to the flow must not exceed 10%
of the set response pressure (seecomponent marking).
▶ The maximum admissible flow stated in the component
marking q
Vmax
(=numerical value instead of the
character "G" in the component marking,
seepage27) must not be exceeded.
▶ Discharge lines of safety valves must end in arisk-free
manner. The accumulation of fluids in the discharge
lines must not be possible.
▶ If alead seal at the safety valve is removed,
the approval according to the PED becomes void.
▶ The requirements of the Pressure Equipment Directives
2014/68/EU and of datasheetAD2000 A2 must be
generally observed.
▶ Options DBAE/DBAEE or 2./3. pressure limiting function
(
6
) are only possible for pressure relief valves
for variable displacement pumps (also seepage3).
▶ The relief function (DBAW../DBAE../DBAEE..) must not
be used for safety functions.
▶ Possible relief via the directional valve must not be
applied for safety-relevant functions. If relief is required
for safety-relevant functions, an additional safety valve
must be installed.
Application notes must always be observed
▶ In the plant, the response pressure specified in the
component marking is set with aflow of 11l/min.
▶ The maximum admissible flow stated in the
component marking applies for applications without
counter pressure in the discharge line (port T).
Notice:
The system pressure increases by the counter
pressure in the discharge line (port T) with increasing
flow (observe AD2000 - datasheetA2 - item 6.3).
To ensure that this increase in system pressure
caused by the flow does not exceed 10% of the set
response pressure, the admissible flow has to be
reduced according to the counter pressure in the
discharge line (port T) (seefollowing diagrams
on pages 29 and 30).
Deviating technical data: Type-examination tested safety valve typeDBA…E,
Component series 2X, according to the Pressure Equipment Directive2014/68/EU
Hydraulic
Maximum flow seeordering code on page27 and diagrams on page29 and 30
Hydraulic fluid Mineral oil (HL, HLP) according to DIN51524-1 and DIN51524-2
Hydraulic fluid temperature range (=TS) °C –10 … +80
Viscosity range mm
2
/s 12 … 230
2
8
7
6
5
4
3
1
9
10
0
0
100 20050 150 25060
100
200
350
300
11
21.5
3
6.5
6
11.5
21
31.5
35
32
15.75
p
A
in bar
p
T
in bar
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 29/32
RE25891, edition: 2021-08, BoschRexrothAG
Safety instructions: Type-examination tested safety valves typeDBA…E, component series 2X
according to Pressure Equipment Directive 2014/68/EU
Maximum admissible ow q
Vmax
dependent on the counter pressure p
T
in the discharge line with internal
pilot oil return
TypeDBA 15 …-2X/…E
Flow inl/min →
Characteristic
curves
Response
pressure
p
A
in bar
1 30
2 60
3 65
4 110
5 115
6 210
7 215
8 315
9 320
10 350
Characteristic curves for
intermediate values can be
generated by interpolation.
Further explanations
seebelow
p
A
= Response pressure inbar
p
T
= Maximum admissible counter pressure in the
discharge line inbar (port T)
(sum of all possible counter pressures;
also seeAD2000 - datasheetA2)
p
T max
= 10%xp
A
(at q
V
=0) according to
PED 2014/68/EU
q
V max
= Maximum admissible flow inl/min
Explanation of the diagrams (Example: typeDBA 15...E):
known: ▶ Flow of the system/accumulator that
has to be secured q
Vmax
=100l/min
▶ Set response pressure of the safety
valve p
A
=315bar
unknown: p
T admissible
Solution: See arrows in diagram above
p
T admissible
(100l/min; 315bar)=15.75bar
0
0
1
2
3
4
5
6
7
8
9
10
100
200
350
300
11
21.5
3
6.5
6
11.5
21
31.5
35
32
15.75
p
A
in bar
p
T
in bar
100 200 30070 150 250
30/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
BoschRexrothAG, RE25891, edition: 2021-08
p
A
= Response pressure inbar
p
T
= Maximum admissible counter pressure
in the discharge line inbar (port T)
(sum of all possible counter pressures;
also seeAD2000 - datasheetA2)
p
T max
= 10%xp
A
(at q
V
=0) according to
PED 2014/68/EU
q
V max
= Maximum admissible flow inl/min
Safety instructions:Type-examination tested safety valves typeDBA…E, component series 2X
according to Pressure Equipment Directive 2014/68/EU
TypeDBA 25 …-2X/…E and typeDBA 30 …-2X/…E
Flow inl/min →
Characteristic
curves
Response
pressure
p
A
in bar
1 30
2 60
3 65
4 110
5 115
6 210
7 215
8 315
9 320
10 350
Characteristic curves for
intermediate values can be
generated by interpolation.
Further explanations can
be found on page29.
Maximum admissible ow q
Vmax
dependent on the counter pressure p
T
in the discharge line with internal
pilot oil return
Pump safety block | DBA, DBAW, DBAE(E), DBAEA 31/32
RE25891, edition: 2021-08, BoschRexrothAG
Mating connectors according to DINEN175301-803 for connector "K4"
Mating connectors according to DINEN175301-803 for connector "K14"
For details and more
mating connectors,
seedatasheet08006
Color
Material number
Without circuitry
With indicator light
12 … 240 V
With rectifier
12 … 240 V
With indicator light and
Z-diode-suppressor
24 V
gray R901017010 – – –
black R901017011 R901017022 R901017025 R901017026
Material number
Without circuitry
250 V
With circuitry (indicator light) AC/DC
6 … 14 V 16 … 30 V 36 … 60 V 90 … 130 V 180 … 240 V
black R901017012 R901017030 R901017048 R901017032 R901017035 R901017037
I
max
16 A 4 A 4 A 4 A 4 A 4 A
General information
▶ At version "DBAW.B" and "DBAE/DBAEE/DBAEA",
the lowest adjustable pressure (circulation pressure)
is set at the pressure relief valve in case of apower
failure or cable break. At typeDBAW..A, the pressure
limiting function is activated.
▶ The relief function (DBAW/DBAE/DBAEE/DBAEA)
must not be used for safety functions.
BoschRexrothAG, RE25891, edition: 2021-08
32/32 DBA, DBAW, DBAE(E), DBAEA | Pump safety block
Bosch Rexroth AG
Industrial Hydraulics
Zum Eisengießer 1
97816 Lohr am Main, Germany
Phone +49 (0) 93 52 / 40 30 20
my.support@boschrexroth.de
www.boschrexroth.de
© All rights reserved to BoschRexrothAG, also regarding any disposal,
exploitation, reproduction, editing, distribution, as well as in the event of
applications for industrial property rights.
The data specified above only serve to describe the product. No statements
concerning acertain condition or suitability for acertain application can be
derived from our information. The information given does not release the user
from the obligation of own judgment and verification.
It must be remembered that our products are subject to a natural process of
wear and aging.
Further information
▶ Directional spool valve Datasheet23178
▶ Proportional pressure relief valve typeDBET(E) Datasheet29162
▶ Proportional pressure relief valve typeDBETA Datasheet29262
▶ Pressure switch HED 8 OH… Datasheet50061
▶ Pressure relief valve typeZ(2)DB … Datasheet25751
▶ Pressure relief valve typeDB 20 K … Datasheet25818
▶ Hydraulic fluids on mineral oil basis Datasheet90220
▶ Environmentally compatible hydraulic fluids Datasheet90221
▶ Flame-resistant, water-free hydraulic fluids Datasheet90222
▶ Flame-resistant hydraulic fluids – containing water (HFAE, HFAS, HFB, HFC) Datasheet90223
▶ Hydraulic valves for industrial applications Operating instructions 07600-B
▶ Information on available spareparts www.boschrexroth.com/spc