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Description
- Size 16 … 32
- Component series 2X
- Maximum operating pressure 350 bar
- Maximum flow 400 l/min
Features
- Zero-pressure 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 at the pump
- CE conformity according to the Low-Voltage Directive 2014/35/EU for electrical voltages >50 VAC or >75VDC
- Solenoid coil as approved component with UR marking according to UL 906, edition 1982, optional
Product description
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.
| 1) | Illustration rotated by 90° |
| 2) | Port X is illustrated with an offset of 90° |
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | |
| DBA | W | 2X | / | 6E | K4 |
| 01 | Pump safety block | DBA |
| 02 | With mounted directional spool valve (data sheet 23178) | W |
| 03 | Size 16 | 15 ◇ |
| Size 25 | 25 ◇ | |
| Size 32 | 30 ◇ | |
| 04 | With mounted directional valve, normally closed | A |
| With mounted directional valve, normally open | B ◇ | |
| Type of connection / SAE flange 1) | ||
| 05 | Standard flange (250 … 350 bar) | F ◇ |
| High-pressure flange (350 bar) | H ◇ | |
| Adjustment type for pressure adjustment 2) | ||
| 06 | Rotary knob | 1 |
| Sleeve with hexagon and protective cap | 2 ◇ | |
| Lockable rotary knob with scale | 3 3) | |
| 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 4) | |
| 08 | Component series 20 … 29 (20 … 29: unchanged installation and connection dimensions) | 2X |
| Pressure rating 5) | ||
| 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 | |
| 10 | Without additional pressure relief valve | no code |
| With mounted pressure relief valve type ZDB 6 VB…-4X/..SO2 (data sheet 25751) | Z 5; 6) | |
| With mounted pressure relief valve type Z2DB 6 VC…-4X/..SO2 (data sheet 25751) | ZZ 5; 7) | |
| 11 | Standard version | no code ◇ |
| Valve for minimum cracking pressure | U | |
| 12 | With directional spool valve | 6E |
| 13 | Direct voltage 24 V | G24 ◇ |
| Direct voltage 205 V | G205 | |
| Alternating voltage 230 V, 50/60 Hz | W230 | |
| 14 | Without manual override | no code ◇ |
| With manual override | N | |
| With concealed manual override (standard) | N9 ◇ | |
| Electrical connection | ||
| 15 | Without mating connector; connector DIN EN 175301-803 | K4 4) |
| Interface electronics | ||
| 16 | Without electronics | no code |
| Nozzle fitting | ||
| 17 | Fixed 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 ◇ | |
| 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 | |
| Seal material (observe compatibility of seals with hydraulic fluid used, see "Technical data") | ||
| 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 Pressure Equipment Directive 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 | |
| 1) | Please observe pressure ratings and connection dimensions. |
| 2) | Adjustment type for pressure switch type HED 8 in brackets. |
| 3) | H-Key with material no. R900008158 is included in the scope of delivery. |
| 4) | Mating connectors, separate order, see "Accessories" |
| 5) | 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 |
| 6) | Not version "DBA..A" |
| 7) | Only if used for pressure limitation and control of variable displacement pumps type A10VSO |
Notice:
◊ = Preferred type
Notice:
Accidental activation of the manual override may lead to uncontrolled machine movements.
Type-examination tested safety valve type DBA…E
(Component series 2X, according to the Pressure Equipment Directive 2014/68/EU)
| Size | Type designation | Component marking | Maximum admissible flow qVmax in l/min with pilot oil return | Set response overpressure p in bar |
| 16 |  | TÜV.SV.▢‒1001.14,4.F.G.p | 60 100 150 200 250 | 30 … 60 61 … 110 111 … 210 211 … 315 316 … 350 |
| 25 |  | TÜV.SV.▢‒1001.14,4.F.G.p | 70 100 150 200 300 | 30 … 60 61 … 110 111 … 210 211 … 315 316 … 350 |
| 32 |  | TÜV.SV.▢‒1001.14,4.F.G.p | 70 100 150 200 300 | 30 … 60 61 … 110 111 … 210 211 … 315 316 … 350 |
| ▢ Information is entered at the factory |
| 1 | Directional valve, normally closed | A |
| Directional valve, normally open | B | |
| Type of connection / SAE flange | ||
| 2 | Standard flange (250 bar) | F |
| High-pressure flange (350 bar) | H | |
| Adjustment type for pressure adjustment | ||
| 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 |
| Without pressure switch | – | |
| 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 |
| 2nd/3rd pressure limiting function (see circuit examples) | ||
| 6 | Without additional pressure relief valve | no code |
| With mounted pressure relief valve type ZDB 6 VB…-4X/..SO2 (data sheet 25751) | Z 1) | |
| With mounted pressure relief valve type Z2DB 6 VC…-4X/..SO2 (data sheet 25751) | ZZ 1) | |
| * | Electrical data ordering codes see "Type codes" | |
| Seal material | ||
| 7 | NBR seals | no code |
| FKM seals | V | |
| 1) | Only version "A00", "A08" or "A10" |
Technical data
general
| Size | 16 | 25 | 32 | ||||||
| Earth | with SAE flange | "F" | "H" | "F" | "H" | "F" | "H" | ||
| Pump safety block | DBAW… | kg | 6.1 | 6 | 6.1 | 6.7 | |||
| DBAW…Z… | kg | 7.9 | 7.8 | 7.9 | 8.5 | ||||
| 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 | |||||||
| Conformity | CE according to Low-Voltage Directive 2014/35/EU checked according to EN 60204-1:2006-01 and DIN VDE 0580, classified as component. | ||||||||
hydraulic
| Size | 16 | 25 | 32 | |||
| Maximum operating pressure | Port P | bar | 350 | |||
| Maximum counter pressure | Port T | Direct voltage 1) | bar | 210 | ||
| AC voltage | bar | 160 | ||||
| Minimum set pressure | flow-dependent, see "characteristic curves" | |||||
| Maximum set pressure | bar | 50 100 200 250 315 350 | ||||
| Maximum flow | l/min | 300 | 400 | |||
| Hydraulic fluid | see table "Hydraulic fluid" | |||||
| 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, cleanliness class according to ISO 4406 (c) 2) | Class 20/18/15 | |||||
| 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. |
| Hydraulic fluid | Classification | Suitable sealing materials | Standards | Data sheet | |
| Mineral oils | HL, HLP | NBR, FKM | DIN 51524 | 90220 | |
| Bio-degradable | Insoluble in water | HETG | FKM | ISO 15380 | 90221 |
| HEES | FKM | ||||
| Soluble in water | HEPG | FKM | ISO 15380 | ||
| Flame-resistant | Water-free | HFDU (glycol base) | FKM | ISO 12922 | 90222 |
| HFDU (ester base) | FKM | ||||
| HFDR | FKM | ||||
| Containing water | HFC (Fuchs: Hydrotherm 46M, Renosafe 500; | NBR | ISO 12922 | 90223 | |
| Important information on hydraulic fluids:
| |||||
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, 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 (= "TS") | °C | -10 … +80 |
| Viscosity range | mm²/s | 12 … 230 |
(For applications outside these values, please consult us!)
Diagrams/characteristic curves
(measured with HLP46, ϑOil = 40 ±5 °C)
Minimum set pressure and circulation pressure dependent on the flow
Standard version
Minimum set pressure and circulation pressure dependent on the flow
Version “U”
Inlet pressure dependent on the flow
Notices:
- The characteristic curves apply to an output pressure pT =0 bar in the entire flow range.
- 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.
Type-examination tested safety valve type DBA…E
(Component series 2X, according to the Pressure Equipment Directive 2014/68/EU)
Size 16
Maximum admissible flow qVmax dependent on the counter pressure pT in the discharge line
| Characteristic curves for intermediate values can be generated by interpolation. |
| Characteristic curves | Response pressurepA in bar |
| 1 | 30 |
| 2 | 60 |
| 3 | 65 |
| 4 | 110 |
| 5 | 115 |
| 6 | 210 |
| 7 | 215 |
| 8 | 315 |
| 9 | 320 |
| 10 | 350 |
| 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 |
Determination of the maximum counter pressure
| 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 |
Size 25 and 30
Maximum admissible flow qVmax dependent on the counter pressure pT in the discharge line
| Characteristic curves for intermediate values can be generated by interpolation. |
| Characteristic curves | Response pressurepA in bar |
| 1 | 30 |
| 2 | 60 |
| 3 | 65 |
| 4 | 110 |
| 5 | 115 |
| 6 | 210 |
| 7 | 215 |
| 8 | 315 |
| 9 | 320 |
| 10 | 350 |
| 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 |
Symbols/Circuit diagrams
General circuit example set-up
| 1) | Only type DBAE(E) |
Arrangement of the nozzles/plugs items 17.1, 17.2 and 17.3
Circuit examples : Fixed pumps (selection)
DBAW.B…Z
DBAW.A…
DBAW.B…
Circuit examples : Variable displacement pumps (selection)
Preferably for axial piston variable displacement pumps type A10VSO with DR, DFR1 or DFLR controller
DBAW.B…A08
DBAW.B…Z…A08
DBAW.B…ZZ…A08
Notice:
If used on variable displacement pumps with DFLR controllers, the nozzle at port X of the pump control must be removed.
Circuit examples : Variable displacement pumps (selection)
Preferably for axial piston variable displacement pumps type A10VSO with DRG controller
DBAW.B…Z…A00
DBAW.B…ZZ…A00
Dimensions
load errorInformation
load errorSafety Instructions
load errorDownloads
 | Pump safety block Data Sheet | RE25891 | 2021-08-01 | English, United States | PDF | 1.3MB Product Groups: Pressure relief valves Type DBA, DBAW, DBAE, DBAEE, DBAEA |
| Pump safety block Manual | RE25891-B | 2021-10-01 | English | PDF | 986k Product Groups: Industrial Hydraulics Type DBA...2X/...E |
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