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Description
- Size 6
- Component series 1X
- Maximum operating pressure 350 bar
- Maximum flow 60 l/min
Features
- Sandwich plate valve
- Porting pattern according to ISO 4401-03-02-0-05
- 4 pressure ratings, optional
- 2 adjustment types, optionally:
• Spindle with internal hexagon and protective cap
• Lockable rotary knob with scale - Corrosion-protected design
Product description
Valve type Z3DR are pilot-operated 3-way pressure reducing valves in sandwich plate design with pressure limitation of the actuator. They serve for reduction and control of secondary pressure.
The valves basically consist of pilot control valve (1) and housing (2) including main stage. The secondary pressure is set via the adjustment type (3).
Rexroth pilot-operated pressure reducing valves feature flat discharge pressure curves, high stability and low hysteresis.
Version "MS" enables measurement and monitoring of the set secondary pressure via a pressure load cell at the measuring port (4) (refer to Dimensions).
If the secondary pressure at actuator port P① further exceeds the set value, the third line to tank port T is opened by the valve. This way, the actuator channel is protected against inadmissible pressure rise.
| ① | component side |
| ② | plate side |
Type code
| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 13 | ||
| Z | 3 | DR | 6 | V | P | - | 1X | / |
| 01 | Sandwich plate valve | Z |
| 02 | 3-way version | 3 |
| 03 | Pressure reducing valve | DR |
| 04 | Size 6 | 6 |
| 05 | Pilot-operated | V |
| Pressure reduction | ||
| 06 | In channel P➀ | P |
| Adjustment type | ||
| 07 | Spindle with internal hexagon and protective cap ("J3" version without protective cap) | 2 |
| Lockable rotary knob with scale 1) | 3 | |
| 08 | Component series 10 ... 19 (10 ... 19: unchanged installation and connection dimensions) | 1X |
| Pressure rating | ||
| 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 315 bar | 315 | |
| Pressure measuring port | ||
| 10 | Without pressure measuring port | no code |
| With pressure measuring port (secondary pressure) | MS | |
| Corrosion resistance | ||
| 11 | None | no code |
| Improved corrosion protection (240 h salt spray test according to EN ISO 9227); (only version "2") | J3 | |
| Seal material (observe compatibility of seals with hydraulic fluid used, see "Technical data") | ||
| 12 | NBR seals | no code |
| FKM seals | V | |
| Connection thread (pressure measuring port) | ||
| 13 | Pipe thread according to ISO 228-1 | no code |
| SAE thread | /12 | |
| 1) | H-Key with material no. R900008158 is included in the scope of delivery. |
Notice:
For valve types for use in explosive areas, refer to data sheet 07011.
Technical data
(For applications outside these values, please consult us!)
general
| Size | 6 | ||
| Weight | Version "2" | kg | 1.3 |
| Version "3" | kg | 1.4 | |
| Installation position | any | ||
| Ambient temperature range | °C | -15 … +80 | |
| MTTFD values according to EN ISO 13849 1) | yrs | 75 … 600 | |
| 1) | For further details, see data sheet 08012 |
hydraulic
| Size | 6 | |||
| Maximum operating pressure | bar | 350 | ||
| Maximum return flow pressure 1) | bar | 160 | ||
| Maximum set pressure | Version | "50" | bar | 50 |
| "100" | bar | 100 | ||
| "200" | bar | 200 | ||
| "315" | bar | 315 | ||
| Maximum flow | l/min | 60 | ||
| Hydraulic fluid | see table "Hydraulic fluid" | |||
| Hydraulic fluid temperature range | °C | -15 … +80 | ||
| Viscosity range 2) | mm²/s | 10 … 500 | ||
| Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 3) | Class 20/18/15 | |||
| 1) | Ideally depressurized to the tank. Counter pressure adds to the set pressure. |
| 2) | Preferably 50 … 120 mm2/s |
| 3) | 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 | 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:
| |||||
Diagrams/characteristic curves
(measured with HLP46, ϑOil = 40 ±5 °C)
Δp-qV characteristic curves
Pressure rating 50 bar
Pressure rating 100 bar
Pressure rating 200 bar
Pressure rating 315 bar
Symbols/Circuit diagrams
Without pressure measuring port "no code"
With pressure measuring port "MS"
| ① | component side |
| ② | plate side |
Dimensions
Dimensions in mm
 |
| Required surface quality of the valve contact surface |
| ➀ | component side – porting pattern according to ISO 4401-03-02-0-05 (with locating hole Ø4 x 4 mm deep) |
| ➁ | plate side – Porting pattern according to ISO 4401-03-02-0-05 (with locating hole Ø3 x 5 mm deep for locking pin ISO 8752-3x8-St, material no. R900005694, separate order) |
| 1 | Name plate |
| 2 | Adjustment type "2" (spindle with internal hexagon SW8 and lock nut SW24) |
| 3 | Adjustment type "3" |
| 4.1 | Without measuring port (standard) |
| 4.2 | Measuring port (version "MS"); when loosening the plug screw (SW6 [3/16“] internal hexagon, tightening torque MA = 20 Nm ±10 %), hold the SW24 reducing piece in place. Dimensions specified in [ ] for version "/12" |
| 5 | Valve mounting bores |
| 6 | Identical seal rings for ports A, B, P and T (plate side) |
| 7 | Space required to remove the key |
| 8 | Protective cap (not included with version "J3") |
Valve mounting screws (separate order)
4 hexagon socket head cap screws ISO 4762 - M5 - 10.9
Notices:
- Length and tightening torque of the valve mounting screws must be calculated according to the components mounted under and over the sandwich plate valve.
- The dimensions are nominal dimensions which are subject to tolerances.
Accessories
| Denomination | Material number |
| Protective cap | R900135501 |
| Locking pin ISO 8752-3x8-St | R900005694 |
Downloads
 | Pressure reducing valve, pilot-operated Data Sheet | RE26871 | 2019-03-01 | English | PDF | 393k Product Groups: Pilot operated Type Z3DR |
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