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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 DBAE 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 the operating pressure.
Pump safety block type DBAE(E) for displacement pumps (with proportional pressure relief valve)
In principle, the function corresponds to type DBA....
Unloading 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.
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) for variable displacement pumps type A10V.. (with proportional pressure relief valve)
In principle, the function corresponds to type DBA....
By means of the proportional pressure relief valve type DBET(E)-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) 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 Y must be connected to the tank in a depressurized way (possibly by means of the drain line of the hydraulic system). |
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | |
| DBA | EE | B | 2X | / | G24 | K31 |
| 01 | Pump safety block | DBA |
| 02 | With mounted proportional pressure relief valve with integrated control electronics, type DBETE-6X/.Y… 1) | EE |
| 03 | Size 16 | 15 |
| Size 25 | 25 | |
| Size 32 | 30 | |
| 04 | With mounted directional valve, normally open | B |
| Type of connection / SAE flange 2) | ||
| 05 | Standard flange (250 … 350 bar) | F |
| High-pressure flange (350 bar) | H | |
| Adjustment type for pressure adjustment 3) | ||
| 06 | Rotary knob | 1 |
| Sleeve with hexagon and protective cap | 2 | |
| Lockable rotary knob with scale | 3 4) | |
| 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 5) | |
| 08 | Component series 20 … 29 (20 … 29: unchanged installation and connection dimensions) | 2X |
| Pressure rating 6) | ||
| 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 |
| 11 | Standard version | no code |
| 12 | Without directional valve | no code |
| 13 | Direct voltage 24 V | G24 |
| 14 | Without manual override | no code |
| Electrical connection | ||
| 15 | Without mating connector; connector DIN EN 175201-804 | K31 5) |
| Interface electronics | ||
| 16 | Command value 0 … 10 V | A1 |
| Command value 4 … 20 mA | F1 | |
| 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 6) | |
| 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 6) | |
| 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 |
| 1) | Externally discharge the pilot oil from the proportional pressure relief valve type DBET(E). |
| 2) | Please observe pressure ratings and connection dimensions. |
| 3) | Adjustment type for pressure switch type HED 8 in brackets. |
| 4) | H-Key with material no. R900008158 is included in the scope of delivery. |
| 5) | Mating connectors, separate order, see "Accessories" |
| 6) | If used on variable displacement pumps with DFLR controllers, the nozzle at port X of the pump control must be removed. |
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 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 |
| * | Electrical data ordering codes see "Type codes" | |
| Seal material | ||
| 7 | NBR seals | no code |
| FKM seals | V | |
Technical data
general
| Size | 16 | 25 | 32 | ||||||
| Earth | with SAE flange | "F" | "H" | "F" | "H" | "F" | "H" | ||
| Pump safety block | DBAEE... | kg | 7 | 6.9 | 7 | 7.6 | |||
| Pressure switches | HED 8 | kg | 0.8 | ||||||
| Installation position | any | ||||||||
| Ambient temperature range | NBR seals | °C | -20 … +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 Y | depressurized to the tank | |||
| 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 | -20 … +80 | ||
| FKM seals | °C | -15 … +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) 1) | Class 20/18/15 | ||||
| 1) | 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 |
| 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
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)
DBAE(E)…
| 1) | 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 leakage line of the hydraulic system). |
Circuit examples : Variable displacement pumps (selection)
Preferably for axial piston variable displacement pumps type A10VSO with DR, DFR1 or DFLR controller
DBAE(E)…A08
| 1) | 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 leakage line of the hydraulic system). |
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
DBAE(E)…A00
| 1) | 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 leakage line of the hydraulic system). |
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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