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BOSCH REXROTH
DBAW15BF2-2X/315Z6EG24N9K4A08
R900950572
Pressure Relief Valves

Pressure valves: DBA* 15.-2x/

$2,839.00

BOSCH REXROTH

MATERIAL:  R900950572

SUMMARY:  Pressure valves: DBA* 15.-2x/

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General

Pump safety blocks type DBAW 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 and solenoid-actuated unloading (type DBAW) the operating pressure.

Pump safety block type DBAW

In principle, the function of this block corresponds to the function of block type DBA.... Unloading 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 principle, 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.

Pump safety block type DBAW.B…Z…A for control pump A10V... (with pressure relief valve)

In principle, 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 principle, 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.

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

16

17

18

19

DBAW

2X

/

6E

K4

Type

01

With mounted directional spool valve (data sheet 23178)

DBAW

Size

02

Size 16

15

Size 25

25

Size 32

30

03

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

With mounted directional spool valve 4WE 6 L37B.6X/..; normally closed

A

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

With mounted directional spool valve 4WE 6 H 6X/..; normally open

1)

B

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

With mounted directional spool valve 4WE 6 HB 6X/..; normally open

2)

Type of connection / SAE flange

3)

04

Standard flange (250 … 350 bar)

F

High-pressure flange (350 bar)

H

Adjustment type for pressure adjustment

4)

05

Rotary knob

1

Sleeve with hexagon and protective cap

2

Lockable rotary knob with scale

3 12)

Rotary knob with scale

7

06

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 5)

Component series

07

Component series 20 ... 29 (20 ... 29: unchanged installation and connection dimensions)

2X

Pressure rating

6)

08

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 315 bar

315

Set pressure up to 350 bar

350

09

Without additional pressure relief valve (standard, only one pressure limitation)

no code

With mounted pressure relief valve type ZDB 6 VB…-4X/..SO2 (data sheet 25751)

Z6)

With mounted pressure relief valve type Z2DB 6 VC…-4X/..SO2 (data sheet 25751)

ZZ 6) 7)

10

Standard version

no code

Valve for minimum cracking pressure

U

11

Without directional valve

no code

With directional spool valve

6E

12

Direct voltage 24 V

G24

Direct voltage 205 V

G205

Alternating voltage 230 V, 50/60 Hz

W230

13

With concealed manual override (standard)

N98)

With manual override

N8)

Without manual override

no code

Electrical connection

10)

14

Without mating connector; connector DIN EN 175301-803

K4 5)

Interface electronics

15

Without electronics

no code

Nozzle fitting

16

Fixed pumps

Lateral channel closed, transverse channel open, pilot oil bore open; (standard for displacement pumps; pure DB-/DBW function)

no code

Variable 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 9)

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)

A10 9)

Seal material

11)

17

NBR seals

no code

FKM seals

V

Type-examination procedure

18

Without type-examination procedure

no code

Type-examination tested safety valve according to PED 2014/68/EU

E

19

Standard solenoid coil

no code

Solenoid coil is an approved component with UR-marking according to UL 906 (only version "6E")

= UR

1) In versions with pressure relief valve type Z(2)DB
2) In versions without pressure relief valve type Z(2)DB
3) Observe pressure ratings and connection dimensions!
4) Adjustment type for pressure switch type HED8 in brackets!
5) Mating connectors, separate order
6) Identical pressure rating for pressure limitation screw-in cartridge valve type DB 20 K, pressure relief valve (sandwich plate valve) type Z(2)DB 6 and pressure switch type HED 8
7) Only in case of use for pressure limitation and control of the variable displacement pump type A10VSO
8) Notice! Accidental activation of the manual override may lead to uncontrolled machine movements!
9) If used on variable displacement pumps with DFLR controllers, the nozzle at port X of the pump control must be removed!
10) Externally discharge the pilot oil from the proportional pressure relief valve type DBET(E)
11) Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)
12) H-key with material no. R900008158 is included in the scope of delivery.

Notice! Preferred types and standard units are contained in the EPS (standard price list).

general

Size

16 25 32

Mass

Pump safety block

DBAW...

kg

6.1 6 6.1 6.7

Type DBAW…Z…

kg

7.9 7.8 7.9 8.5

Type DBAW…ZZ…

kg

8.1 8 8.1 8.7

Pressure switches

HED 8

kg

0.8

Installation position

any

Ambient temperature range

NBR seals

°C

-30 … +50 -

FKM seals

°C

- -15 … +50

hydraulic

Size

16 25 32

Maximum operating pressure

Port P

bar

350

Maximum counter pressure

Port T (DC solenoid) 1)

bar

210

Port T (AC solenoid)

bar

160

Minimum set pressure

flow-dependent, see characteristic curves

Maximum set pressure

bar

50
100
200
315
350

Maximum flow

l/min

300 400

Hydraulic fluid

see table

Hydraulic fluid temperature range

NBR seals

°C

-30 … +80 -

FKM seals

°C

- -20 … +80

Viscosity range

mm²/s

10 … 800

Maximum admissible degree of contamination of the hydraulic fluid 2)

Class 20/18/15 according to ISO 4406 (c)
1) 180 bar for version "=UR"
2) 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.

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Data sheet

Mineral oils

HL, HLP

NBR, FKM

DIN 51524

90220

Bio-degradable

Insoluble in water

HETG

NBR, FKM

ISO 15380

90221

HEES

FKM

Soluble in water

HEPG

FKM

ISO 15380

Flame-resistant

Water-free

HFDU, HFDR

FKM

ISO 12922

90222

Containing water

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

NBR

ISO 12922

90223

Important information on hydraulic fluids:

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 40K higher than the maximum surface temperature.

Flame-resistant – containing water:

Maximum pressure differential per control edge 50bar Pressure pre-loading at the tank port >20 % of the pressure differential; otherwise, increased cavitation Life cycle as compared to operation with mineral oil HL, HLP 50 … 100 %

Bio-degradable and flame-resistant:

If these hydraulic fluids are used, small amounts of dissolved zinc may get into the hydraulic system.

Deviating technical data’: Type-examination tested safety valves type DBA…E, component series 2X according to Pressure Equipment Directive 2014/68/EU

hydraulic

Maximum flow

See ordering code, safety instructions and characteristic curves "Type-examination tested safety valve"

Hydraulic fluid

Mineral oil (HL, HLP) according to DIN 51524-1 and DIN 51524-2

Hydraulic fluid temperature range

°C

-10 … +60

Viscosity range

mm²/s

12 … 230

For applications outside these parameters, please consult us!

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

Inlet pressure dependent on the flow 2)

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/
1) The characteristic curves apply to an output pressure pT =0 bar in the entire flow range.

Notice!

The characteristic curves were measured with internal pilot oil return.

Due to the 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 flow 1)
Standard version

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/
1) The characteristic curves apply to an output pressure pT =0 bar in the entire flow range.

Minimum set pressure and circulation pressure dependent on the flow 1)
Version “U”

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/
1) The characteristic curves apply to an output pressure pT =0 bar in the entire flow range.

Safety instructions:Type-examination tested safety valves type DBA…E, component series 2X according to Pressure Equipment Directive 2014/68/EU

Maximum admissible flow q Vmax dependent on the counter pressure pT in the discharge line with internal pilot oil return

Type DBA 15 …-2X/…E

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Characteristic curves for intermediate values can be generated by interpolation. Further explanations see below.

pA

Response pressure in bar

pT

Maximum admissible counter pressure in the discharge line in bar (port T) (sum of all possible counter pressures; also see AD2000 data sheet A2)

pT max

10 % x pA (with qV = 0) according to PED 2014/68/EU

qV 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 qVmax = 100 l/min

Set response pressure of the safety valve pA = 315 bar

unknown:

pTadmissible

Solution:

see arrows in diagram above

pT admissible (100 l/min; 315 bar) = 15.75 bar

Type DBA 25 …-2X/…E and type DBA 30 …-2X/…E

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

pA

Response pressure in bar

pT

Maximum admissible counter pressure in the discharge line in bar (port T) (sum of all possible counter pressures; also see AD2000 data sheet A2)

pT max

10 % x pA (with qV = 0) according to PED 2014/68/EU

qV max

Maximum admissible flow in l/min

General circuit example set-up

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Arrangement of the nozzles/plugs items 17.1, 17.2 and 17.3

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Circuit examples: for displacement pumps (selection)

Type DBAW.B…2X/.Z

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Type DBAW.A…2X/…

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Type DBAW.B…2X/…

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Circuit examples: for variable displacement pump (selection)

Preferably for axial piston variable displacement pumps type A10VSO with DR, DFR1 or DFLR controller 2)

Type DBAW.B…2X/…A08

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Type DBAW.B…2X/.Z…A08

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Type DBAW.B…2X/.ZZ…A08

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/
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 DRG controller

Type DBAW.B…2X/.Z…A00

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Type DBAW.B…2X/.ZZ…A00

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Dimensions in mm

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/
technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Required surface quality of the valve contact surface

1

Name plate

3

Port X for variable displacement pump type A10VSO (otherwise closed); G1/4

4

Port M for pressure gauge; G1/4

5

Mating connector without circuitry (separate order)

6

Mating connector with circuitry (separate order)

8

Adjustment type "1"

1)

14

Space required to remove 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

Dimension for valve with manual override "N"

19

Dimension for valve without manual override

24

Hexagon SW30, tightening torque MA = 50 Nm (For tightening, a manual torque wrench with a tolerance ≤ 10 % must be used.)

25

Lock nut SW22, tightening torque MA = 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)

28

Valve mounting bores

Dimensions in mm

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/
1) Version "ZZ"
2) Version "Z"
technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Required surface quality of the valve contact surface

1

Name plate

3

Port X for variable displacement pump type A10VSO (otherwise closed); G1/4

4

Port M for pressure gauge; G1/4

5

Mating connector without circuitry (separate order)

6

Mating connector with circuitry (separate order)

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 to remove the mating connector

15

Seal ring

16

Directional spool valve type WE 6 (data sheet 23178)

20

Pressure relief valve (sandwich plate) type Z(2)DB 6 …(data sheet 25751)

24

Hexagon SW30, tightening torque MA = 50 Nm (For tightening, a manual torque wrench with a tolerance ≤ 10 % must be used.)

25

Lock nut SW22, tightening torque MA = 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)

28

Valve mounting bores

Standard flanges type DBA…F… according to DIN ISO 6162-1

Size

Line connections

4 valve mounting screws ISO 4762 - 10.9

1)

Tightening torqueMA in Nm

2)

P and P1

T

X, M

Part number

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

Admissible pressures (flange connections according to DIN ISO 6121-1)

in bar

SAE 3/4​″

350

SAE 1​″

315

SAE 1 1/4​″

250

High-pressure flanges type DBA…H… according to DIN ISO 6162-2

Size

Line connections

4 valve mounting screws ISO 4762 - 10.9

1)

Tightening torqueMA in Nm

2)

P and P1

T

X

Part number

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

Admissible pressures (flange connections according to DIN ISO 6121-2)

in bar

SAE 3/4​″

350

SAE 1​″

350

SAE 1 1/4​″

350

1) Valve mounting screws (separate order)
4 hexagon socket head cap screws ISO 4762 - 10.9-flZn-240h-L
(with friction coefficient μtotal = 0.09 ... 0.14)

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 %).

Standard flanges type DBAW…F…

NG

B2

B7

B8

H6

H7

mm

mm

mm

mm

mm

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 flanges type DBAW…H…

NG

B2

B7

B8

H6

H7

mm

mm

mm

mm

mm

16 12 144.5 109.5 159 153
25 12 144.5 109.5 159 153
32 14.5 145 107 163 157

Standard flanges type DBAW..F…Z…

NG

B2

H8

H9

mm

mm

mm

16 12 199 193
25 12 199 193
32 10 199 193

High-pressure flanges type DBAW..H…Z…

NG

B2

H8

H9

mm

mm

mm

16 12 199 193
25 12 199 193
32 14.5 203 197

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!

At types DBAW.B, the lowest adjustable pressure (circulation pressure) is set at the pressure relief valve in case of power failure or cable break. At type DBAW..A, the pressure limiting function is activated. The unloading function (DBAW) must not be used for safety functions!

Mating connectors for valves with connector “K4”, without circuitry, standard

3P Z4

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

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

Mating connectors for valves with connector “K4”, with indicator light

3P Z5L

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Mating connectors for valves with connector “K4”, with indicator light

3P Z5L

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

Mating connectors for valves with connector “K4”, with indicator light and Zener diode suppression circuit

3P Z5L1

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Mating connectors for valves with connector “K4”, with indicator light and Zener diode suppression circuit

3P Z5L1

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

Mating connectors for valves with connector “K4”, with rectifier

3P RZ5

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Mating connectors for valves with connector “K4”, with rectifier

3P RZ5

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

Mating connectors for mechanical pressure switches with connector “K14”, without circuitry, standard

4P Z14

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Mating connectors for mechanical pressure switches with connector “K14”, without circuitry, standard

4P Z14

For mechanical pressure switches with connector “K14”, according to EN 175301-803 and ISO 4400, 3-pole + PE, “large cubic connector”

Data sheet

Spare parts & repair

Mating connectors for mechanical pressure switches with connector “K14”, with indicator lights at connections 2 and 3

4P Z15L

technical illustration-DBAW15BF2-2X/315Z6EG24N9K4A08-Pressure valves: DBA* 15.-2x/

Mating connectors for mechanical pressure switches with connector “K14”, with indicator lights at connections 2 and 3

4P Z15L

For mechanical pressure switches with connector “K14”, according to EN 175301-803 and ISO 4400, 3-pole + PE, “large cubic connector”

Data sheet

Spare parts & repair

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 flow qVmax in l/min with pilot oil return

Set response overpressurep in bar

16

1 2 3 4 5 6 * 7

DBAW 15 ▢▢▢▢2X/▢▢6▢▢E

TÜV.SV.▢‒1001.14,4.F.G.p

60

100

150

200

250

30 … 60

61 … 110

111 … 210

211 … 315

316 … 350

25

1 2 3 4 5 6 * 7

DBAW 25 ▢▢▢▢2X/▢▢6▢▢E

TÜV.SV.▢‒1001.14,4.F.G.p

70

100

150

200

300

30 … 60

61 … 110

111 … 210

211 … 315

316 … 350

32

1 2 3 4 5 6 * 7

DBAW 30 ▢▢▢▢2X/▢▢6▢▢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

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 (pressure adjustment sealed, unloading or setting of a lower response pressure possible!)

1

With sealed protective cap (no adjustment/unloading possible)

2

4

With mounted pressure switch type HED 8 OH… (without mating connector)

D

5

Pressure in the designation is to be entered by the customer, pressure adjustment ≥ 30 ... 350 bar and possible in 5 bar steps.

z. B. 150

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

Versions DBAW…Z(Z)E and DBAE(E)…E are only available with ordering code "A00", "A08" or "A10"

*

Ordering code of the electric data

z. B. EG24N9K4

7

NBR seals

no code

FKM seals

V

Value entered at the factory

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 flow qVmax 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 PED2014/68/EU the increase of the system pressure by the flow must not be higher than 10 % of the set response pressure (see component marking). The maximum admissible flow q Vmax stated in the component marking (= numerical value instead of the character "G" in the component marking, see ordering code, type-examination tested safety valves) 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! The requirements of the Pressure Equipment Directives 2014/68/EU and of data sheet AD2000 A2 must be generally observed! Options DBAE/DBAEE or 2nd/3rd pressure limiting function ( 6 ) are only possible for pressure relief valves for variable displacement pumps (also see ordering code). The unloading function (DBAW) must not be used for safety functions! Possible unloading via the directional valve must not be applied for safety-relevant functions! If unloading is required for safety-relevant functions, an additional safety valve must be installed.

It is imperative to observe the application notes!

In the plant, the response pressure specified in the component marking is set at 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 the value of 10% of the set response pressure, the admissible flow has to be reduced dependent on the counter pressure in the discharge line (port T) (see diagrams (Safety instructions, Type-examination tested safety valves).