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BOSCH REXROTH
DR6DP2-5X/150YMW5
R900479695
Pressure Reducing Valves

Pressure valves: DR 6 D.-5x/

BOSCH REXROTH

MATERIAL:  R900479695

SUMMARY:  Pressure valves: DR 6 D.-5x/

Due to extremely high demand, please call 888-651-5712 for availability

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 limit a system pressure. The secondary pressure is set via 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 to control position and keeps the set pressure in channel A at a constant level.

Signal and pilot oil come 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 channel T(Y) via the control edge (8) 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 (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…

technical illustration-DR6DP2-5X/150YMW5-Pressure valves: DR  6 D.-5x/

01

02

03

04

05

06

07

08

09

DR6DP

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

04

Maximum secondary pressure 25 bar

25

Maximum secondary pressure 75 bar

75

Maximum secondary pressure 150 bar

150

Maximum secondary pressure 210 bar

210

Maximum secondary pressure 315 bar

3152)

05

Internal pilot oil supply, external leakage oil discharge

Y

06

With check valve

no code

Without check valve

M

Seal material

07

NBR seals

no code

FKM seals (other seals on request) Attention! Observe compatibility of seals with the hydraulic fluid used!

V

08

Without locating hole

no code

With locating hole

/60 3)

With locating hole and locking pin ISO 8752-3x8-St

/62

09

Further details in the plain text

*

1) H-key with material no. R900008158 is included in the scope of delivery.
2) Only with adjustment type “2” and without check valve
3) Locking pin ISO 8752-3x8-St, material no. R900005694 (separate order)

Preferred types and standard units are contained in the EPS (standard price list).

general

Size

6

Installation position

any

Storage temperature range

NBR seals

°C

-30 ... +80

FKM seals

°C

-20 ... +80

Weight

kg

1.2

hydraulic

Size

6

Maximum operating pressure

Port P

bar

315

Maximum secondary pressure

Anschluss 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 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.

Hydraulic fluid

Classification

Suitable sealing materials

Standards

Mineral oils and related hydrocarbons

HL, HLP, HLPD

NBR, FKM

DIN 51524

Environmentally compatible

Insoluble in water

HETG

NBR, FKM

 

ISO 15380

HEES

FKM

Soluble in water

HEPG

FKM

 

ISO 15380

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 %

For applications outside these parameters, please consult us!

(measured with HLP46, ϑOil = 40 ±5 °C)

pA-qV characteristic curves

technical illustration-DR6DP2-5X/150YMW5-Pressure valves: DR  6 D.-5x/

pA-qV characteristic curves

technical illustration-DR6DP2-5X/150YMW5-Pressure valves: DR  6 D.-5x/

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.

Δp-qV characteristic curves

technical illustration-DR6DP2-5X/150YMW5-Pressure valves: DR  6 D.-5x/

Δp-qV characteristic curves

technical illustration-DR6DP2-5X/150YMW5-Pressure valves: DR  6 D.-5x/

1

P to A (minimum pressure differential)

2

A to T(Y) (minimum pressure differential)

3

Δp only via check valve

4

Δp via check valve and fully opened control cross-section

Version "M"

Without check valve

technical illustration-DR6DP2-5X/150YMW5-Pressure valves: DR  6 D.-5x/

Version "no code"

With check valve

technical illustration-DR6DP2-5X/150YMW5-Pressure valves: DR  6 D.-5x/

Dimensions in mm

technical illustration-DR6DP2-5X/150YMW5-Pressure valves: DR  6 D.-5x/

Dimensions in mm

technical illustration-DR6DP2-5X/150YMW5-Pressure valves: DR  6 D.-5x/

1

Name plate

2

Adjustment type "1"

3

Adjustment type "2"

4

Adjustment type "3"

5

Adjustment type "7"

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

Without check valve

13

With check valve

14

Port B without function

15

Porting pattern according toISO 4401-03-02-0-05 (with locating hole for locking pin ISO 8752-3x8-St, material no. R900005694, separate order)

Subplates (separate order)

(without locating hole)

G 341/01 (G1/4)

G 342/01 (G3/8)

G 502/01 (G1/2)

(with locating hole)

G 341/60 (G1/4)

G 342/60 (G3/8)

G 502/60 (G1/2)

 

 

Valve mounting screws (separate order)

4 metric hexagon socket head cap screws

ISO 4762 - M5 x 50 - 10.9-flZn-240h-L

at friction coefficient μtotal = 0.09 to 0.14,

tightening torque MA = 7 Nm] ± 10% ,

material no. R913000064

4 hexagon socket head cap screws UNC

10-24 UNC x 2” (on request)