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Description
- Size 6
- Component series 5X
- Maximum operating pressure 315 bar
- Maximum flow 60 l/min
Features
- For subplate mounting
- Porting pattern according to ISO 4401-03-02-0-05 (with or without locating hole)
- 5 pressure ratings
- 4 optional adjustment types:• Rotary knob• Threaded pin with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale
- Check valve, optional
- Corrosion-protected design
Product description
The valve type DR 6 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 reduce a system pressure. The secondary pressure is set using the adjustment type (4).
The valve is open in initial position. Hydraulic fluid can flow from channel P to channel A without restrictions. The pressure in channel A is simultaneously applied via the control line (6) 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 into 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 (6) 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 the channel T(Y) via the control edge (8) at the control spool (2). Hydraulic fluid is discharged into the tank to an extent that the pressure can only slightly increase.
The leakage oil discharge from the spring chamber (7) is always effected externally via channel T(Y).
For the free flow back from channel A to channel P, a check valve (5) can optionally be installed.
A pressure gauge connection (1) allows for the control of the secondary pressure.
Type DR 6 DP1-5X/.Y…
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | ||
| DR 6 DP | – | 5X | / | Y | * |
| 01 | Pressure reducing valve, direct operated, size 6 | DR 6 DP |
| Adjustment type | ||
| 02 | Rotary knob | 1 |
| Grub screw with hexagon and protective cap | 2 | |
| Lockable rotary knob with scale | 31) | |
| Rotary knob with scale | 7 | |
| 03 | Component series 50 … 59 (50 … 59: unchanged installation and connection dimensions) | 5X |
| Maximum secondary pressure | ||
| 04 | 25 bar | 25 |
| 75 bar | 75 | |
| 150 bar | 150 | |
| 210 bar | 210 | |
| 315 bar (Only with adjustment type "2" and without check valve) | 315 | |
| 05 | Internal pilot oil supply, external pilot oil return | Y |
| 06 | With check valve | no code |
| Without check valve | M | |
| Corrosion resistance | ||
| 07 | None | no code |
| Improved corrosion protection (240 h salt spray test according to EN ISO 9227) (only version "1" and "2") | J3 | |
| Seal material (observe compatibility of seals with hydraulic fluid used, see "Technical data") | ||
| 08 | NBR seals | no code |
| FKM seals | V | |
| 09 | Without locating hole | no code |
| With locating hole | /60 2) | |
| With locating hole and locking pin ISO 8752-3x8-St | /62 | |
| 10 | Further details in the plain text | * |
| 1) | H-Key with material no. R900008158 is included in the scope of delivery. |
| 2) | Locking pin ISO 8752-3x8-St, material no. R900005694 (separate order) |
Notice:
For valve types for use in potentially explosive areas, refer to data sheet 07011.
Technical data
general
| Size | 6 | ||
| Installation position | any | ||
| Ambient temperature range | NBR seals | °C | -30 … +80 |
| FKM seals | °C | -20 … +80 | |
| Weight | kg | 1.2 | |
| MTTFD values according to EN ISO 13849 1) | yrs | 150 … 1200 | |
| 1) | For further details, see data sheet 08012 |
hydraulic
| Size | 6 | ||
| Maximum operating pressure | Port B | bar | 315 |
| Maximum secondary pressure | Port A | bar | 25 75 150 210 315 |
| Maximum counter pressure | Port T (Y) | bar | 160 |
| Maximum flow | l/min | 60 | |
| Hydraulic fluid | see table "Hydraulic fluid" | ||
| 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, 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. For the selection of the filters, see www.boschrexroth.com/filter. |
| Hydraulic fluid | Classification | Suitable sealing materials | Standards | Data sheet | |
| Mineral oils | HL, HLP, HLPD, HVLP, HVLPD | 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 (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:
| |||||
(For applications outside these values, please consult us!)
Diagrams/characteristic curves
(measured with HLP46, ϑOil = 40 ±5 °C)
pA-qV characteristic curves
Δp-qV characteristic curves
Notices:
- The curve development is maintained if the pressure is set lower according to the pressure rating.
- The characteristic curves apply to an output pressure pT =0 bar in the entire flow range.
Symbols/Circuit diagrams
Version "M"
Without check valve
Version "no code"
With check valve
Dimensions
load errorDownloads
 | Pressure reducing valve, direct operated Data Sheet | RE26564 | 2019-01-01 | English | PDF | 315k Product Groups: Direct operated Type DR 6 DP |
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