BOSCH REXROTH
R900509344
$848.70 USD
- BOSCH REXROTH
- Material:R900509344
- Model:DR10DP2-4X/25YMV
Quantity in stock: 0
The Bosch Rexroth DR10DP2-4X/25YMV (R900509344) is a high-performance, direct operated pressure reducing valve designed for subplate mounting with porting pattern according to DIN Form D and ISO standards. This model is part of the component series X and is capable of handling a maximum operating pressure up to a specified bar level and facilitating a maximum flow rate measured in liters per minute. It features an initial open position that allows hydraulic fluid to flow freely from channel B to channel A, while also being able to limit system pressure. The secondary pressure of the Bosch Rexroth DR10DP2-4X/25YMV valve is adjustable via an adjustment type mechanism, ensuring precise control over the system's performance. The valve maintains a constant pressure level in channel A through the movement of the control spool that reacts to changes in pressure against a compression spring. This ensures stability even when external forces affect the actuator. Furthermore, signal and pilot oil are internally supplied through the control line from channel A. Excess hydraulic fluid can be discharged into the tank via channel TY, preventing undue pressure increase. Additionally, this valve features external leakage oil discharge through channel TY from the spring chamber. For applications requiring free flow back from channel A to channel B, an optional check valve can be installed in this model. The inclusion of a pressure gauge connection facilitates easy monitoring of secondary pressure levels. The Bosch Rexroth DR10DP2-4X/25YMV offers various adjustment types such as rotary knob, threaded pin with hexagon and protective cap, lockable rotary knob with scale, or rotary knob with scale for versatile application adjustments. This robust valve combines precise control with durable construction for reliable operation in various hydraulic systems.
The valve type DR 10 DP is a direct operated pressure reducing valve in 3-way version, i. e. with pressure limitation of the secondary circuit.
It is used to limit a system pressure.
The secondary pressure is set via the adjustment type (1).
The valve is open in initial position. Hydraulic fluid can flow from channel B to channel A without restrictions. The pressure in channel A is simultaneously applied via the control line (4) at the piston area opposite the compression spring (3). If the pressure in channel A exceeds the value set at the compression spring (3), the control spool (2) moves to control position and keeps the set pressure in channel A at a constant level.
Signal and pilot oil are supplied internally via the control line (4) from channel A.
If the pressure in channel A increases further due to an external force effect at the actuator, it pushes the control spool (2) even further against the compression spring (3).
In this way, channel A is connected to channel T(Y) via the control edge (5) at the control spool (2). So much hydraulic fluid is discharged into the tank that the pressure can only increase slightly.
The leakage oil discharge from the spring chamber (6) is always effected externally via channel T(Y).
For the free flow back from channel A to channel B, a check valve (7) can optionally be installed.
A pressure gauge connection (8) allows for the control of the secondary pressure.
Type DR 10 DP1-4X/.Y…
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01 |
02 |
03 |
04 |
05 |
06 |
07 |
08 |
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DR 10 DP |
– |
4X |
/ |
Y |
* |
|
01 |
Pressure reducing valve, direct operated, size 10 |
DR 10 DP |
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Adjustment type |
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02 |
Rotary knob |
1 |
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Grub screw with hexagon and protective cap |
2 |
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Lockable rotary knob with scale |
31) |
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Rotary knob with scale |
7 |
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|
03 |
Component series 40 … 49 (40 … 49: unchanged installation and mounting dimensions) |
4X |
|
04 |
Maximum secondary pressure 25 bar |
25 |
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Maximum secondary pressure 75 bar |
75 |
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Maximum secondary pressure 150 bar |
150 |
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Maximum secondary pressure 210 bar |
210 |
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|
05 |
Internal pilot oil supply, external leakage oil discharge |
Y |
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06 |
With check valve |
no code |
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Without check valve |
M |
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Seal material |
||
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07 |
NBR seals |
no code |
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FKM seals (other seals on request) Attention! Observe compatibility of seals with the hydraulic fluid used! |
V |
|
|
08 |
Further details in the plain text |
* |
1) H-key with material no. R900008158 is included in the scope of delivery.
Preferred types and standard units are contained in the EPS (standard price list).
general
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Size |
10 | ||
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Installation position |
any | ||
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Ambient temperature range |
NBR seals |
°C |
-30 … +50 |
|
FKM seals |
°C |
-20 … +50 | |
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Weight |
kg |
3 | |
hydraulic
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Size |
10 | ||
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Maximum operating pressure |
Port B |
bar |
315 |
|
Maximum secondary pressure |
Port A |
bar |
25 75 150 210 |
|
Maximum counter pressure |
Port T (Y) |
bar |
160 |
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Maximum flow |
l/min |
80 | |
|
Hydraulic fluid |
see table | ||
|
Hydraulic fluid temperature range |
NBR seals |
°C |
-30 … +80 |
|
FKM seal |
°C |
-20 … +80 | |
|
Viscosity range |
mm²/s |
10 … 800 | |
|
Maximum admissible degree of contamination of the hydraulic fluid 1) |
Class 20/18/15 according to ISO 4406 (c) | ||
| 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. For the selection of the filters, see www.boschrexroth.com/filter. |
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Hydraulic fluid |
Classification |
Suitable sealing materials |
Standards |
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Mineral oils and related hydrocarbons |
HL, HLP, HLPD |
NBR, FKM |
DIN 51524 |
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Environmentally compatible |
Insoluble in water |
HETG |
NBR, FKM |
ISO 15380 |
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HEES |
FKM |
|||
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Soluble in water |
HEPG |
FKM |
ISO 15380 |
|
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Containing water |
Water-free |
HFDU, HFDR |
FKM |
ISO 12922 |
|
Containing water |
HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) |
NBR |
ISO 12922 |
|
|
Important information on hydraulic fluids! For further information and data on the use of other hydraulic fluids, please refer to data sheet 90220 or contact us! There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.)!Flame-resistant – containing water: Maximum operating pressure 210 bar Maximum hydraulic fluid temperature 60 °C Expected life cycle as compared to HLP hydraulic oil 30 % to 100 % |
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For applications outside these parameters, please consult us!
(measured with HLP46, ϑOil = 40 ±5 °C)
pA-qV characteristic curves
Δp-qV characteristic curves
Notice!
The curve development is maintained if the pressure is set lower according to the pressure rating.
The characteristic curves apply to the pressure at the valve output p = 0 bar across the entire flow range.
Version "M"
Without check valve
Version "no code"
With check valve
Dimensions in mm
|
1 |
Name plate |
|
2 |
Adjustment type "1" |
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3 |
Adjustment type "2" |
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4 |
Adjustment type "3" |
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5 |
Adjustment type "7" |
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6 |
Space required to remove the key |
|
7 |
Valve mounting bores |
|
8 |
Lock nut SW24 |
|
9 |
Hexagon SW10 |
|
10 |
Identical seal rings for ports A, B, P, T (Y) |
|
11 |
Pressure gauge connection G1/4; 12 mm deep; internal hexagon SW6 |
|
12 |
Locking pin |
|
13 |
Porting pattern according to DIN 24340 form D and ISO 5781-06-07-0-00 |
Subplates (separate order)
G 460/01 (G3/8)
G 461/01 (G1/2)
Valve mounting screws (separate order)
4 metric hexagon socket head cap screws
ISO 4762 - M10 x 60 - 10.9-flZn-240h-L
with friction coefficient μtotal = 0.09 to 0.14,
tightening torque MA = 60 Nm ± 10%,
material no. R912000116