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Description
- Size 10
- Component series 3X
- Maximum operating pressure 315 bar
- Maximum flow 100 l/min
Features
- Cartridge valve
- 4 pressure ratings
- 4 optional adjustment types:• Rotary knob• Sleeve with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale
Product description
Pressure valves type DR 10 K.. are pilot-operated pressure reducing valves for block design installation. They are used for reducing a system pressure. The secondary pressure is set via the adjustment type (4).
In initial position, the valves are open. Hydraulic fluid can flow from main port 2 to 1 without restrictions. The pressure in main port 1 acts simultaneously at main spool (1) and via the nozzle (2) at the spring-loaded inside of the main spool (1). Similarly, it acts via nozzle (7) on the pilot poppet (8). If the pressure in main port 1 exceeds the value set at spring (5), the pilot poppet (8) opens. Hydraulic fluid flows from the chamber of spring (3) via the nozzle (7), the pilot poppet (8) and the spring chamber (6) into main port 3. The main spool (1) assumes its control position and keeps the value in main port 1 set at the spring (5) constant.
The pilot oil return from the spring chamber (6) is always realized externally via main port (3).
Notice!
Counter pressures (main port 3) add up to the set pressure.
Type DR 10 K5-3X/.YM
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | ||
| DR | 10 | K | – | 3X | / | Y | M | * |
| 01 | Pressure reducing valve, pilot-operated | DR |
| 02 | Size 10 | 10 |
| 03 | Cartridge valve | K |
| Adjustment type | ||
| 04 | Rotary knob | 4 |
| Sleeve with hexagon and protective cap | 5 | |
| Lockable rotary knob with scale | 6 1) | |
| Rotary knob with scale | 7 | |
| 05 | Component series 30 ... 39 (30 ... 39: unchanged installation and connection dimensions) | 3X |
| Pressure rating | ||
| 06 | Secondary pressure up to 50 bar | 50 |
| Secondary pressure up to 100 bar | 100 | |
| Secondary pressure up to 200 bar | 200 | |
| Secondary pressure up to 315 bar | 315 | |
| 07 | Internal pilot oil supply, external pilot oil return | Y |
| 08 | Without check valve | M |
| Seal material | ||
| 09 | NBR seals | no code |
| FKM seals (other seals upon request) | V | |
| Observe compatibility of seals with hydraulic fluid used. | ||
| 10 | Further details in the plain text | * |
| 1) H-key with material no. R900008158 is included in the scope of delivery. |
Technical data
general
| Size | 10 | ||
| Weight | kg | 0.2 | |
| Installation position | any | ||
| Ambient temperature range | NBR seals | °C | -30 … +80 |
| FKM seals | °C | -20 … +80 | |
hydraulic
| Size | 10 | ||
| Maximum operating pressure 1) | Main port 2 (P) | bar | 315 |
| Secondary pressure | Main port 1 (A) | bar | 50 100 200 315 |
| Maximum adm. counter pressure 1) | Main port 3 (T) | bar | 315 |
| Maximum flow | l/min | 100 | |
| 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) | Attention! The maximum operating pressure is added up from the set pressure and the return flow pressure. |
| 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 | |
| Mineral oil | HL, HLP | FKM, NBR | DIN 51524 2) | |
| Bio-degradable | Insoluble in water | HEES (synthetic esters) 3) | FKM | VDMA 24568 |
| HETG (rape seed oil) 2) | FKM, NBR | |||
| Soluble in water | HEPG (polyglycols) 3) | FKM | VDMA 24568 | |
| Other hydraulic fluids on request | ||||
| 2) Suitable for NBR and FKM seals | |
| 3) Suitable for FKM seals only |
(For applications outside these values, please consult us!)
Diagrams/characteristic curves
(measured with HLP46, ϑOil = 40 ±5 °C)
pA-qV characteristic curves
pA-qV characteristic curves (in the range of 50 bar)
qV St-qV characteristic curves at Δp (pE – pA)
Δpmin-qV characteristic curves
Symbols/Circuit diagrams
| ➀ | Main port 1 (A) |
| ➁ | Main port 2 (B) |
| ➂ | Main port 3 (Y) |
| ➀ | Main port 1 (A) |
| ➁ | Main port 2 (B) |
| ➂ | Main port 3 (Y) |
Dimensions
Dimensions in mm
Mounting cavity, 3 main ports; M24 x 1 thread
Dimensions in mm
| 1) Depth of fit |
| ➀ | Main port 1 (A) |
| ➁ | Main port 2 (P), can optionally be arranged at the circumference |
| ➂ | Main port 3 (Y), can optionally be arranged at the circumference |
| LS | Location shoulder |
| 1 | Adjustment type "4" |
| 2 | Adjustment type "5" |
| 3 | Adjustment type "6" |
| 4 | Adjustment type "7" |
| 5 | Space required to remove the key |
| 6 | Lock nut SW24 |
| 7 | Hexagon SW10 |
| 8 | Hexagon SW30, tightening torque for screw-in MA = 50 Nm |
| ➀ | Main port 1 (A) |
| ➁ | Main port 2 (P) |
| ➂ | Main port 3 (Y) |
| LS | Location shoulder |
Downloads
 | Pressure reducing valve, pilot operated DR10K Data Sheet | RE26850 | 2021-05-04 | English | PDF | 413k Product Groups: Pilot operated, Pressure reducing and relieving Size 10, Series 3X |
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