PRESSURE REDUCING VALVE, PILOT-OPERATED

ZDR 10 V

Material #: R900929832

Model : ZDR10VP5-3X/315YMV/12

Sandwich plate valve Porting pattern according to ISO 4401-05-04-0-05 4 pressure ratings 4 optional adjustment types:• Rotary knob• Sleeve with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale Check valve, optional (versions "A" and "B") Pressure gauge connection

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Sandwich plate valve Porting pattern according to ISO 4401-05-04-0-05 4 pressure ratings 4 optional adjustment types:• Rotary knob• Sleeve with hexagon and protective cap• Lockable rotary knob with scale• Rotary knob with scale Check valve, optional (versions "A" and "B") Pressure gauge connection

Pressure valves of type ZDR 10 V are pilot-operated pressure reducing valves in sandwich plate design. They are used for reducing a system pressure.

The pressure valves basically consist of pilot control valve (1) and housing (2). The secondary pressure is set via the adjustment type (4).

Pressure reduction in channel P➀ ("P")

In initial position, the valves are open. Hydraulic fluid can flow from channel P➁ to channel P➀ without restrictions.

The pressure in channel P➀ acts simultaneously at the main spool (6), via the bore (5) at the spring-loaded inside of the main spool (6) and via the nozzle (9) on the pilot poppet (8).

If the pressure in channel P➁ exceeds the value set at the compression spring (7), the pilot poppet (8) opens.

Hydraulic fluid flows from the spring-loaded inside of the main spool (6) via the nozzle (9) and the pilot poppet (8) into the spring chamber (10). The main spool (6) assumes its control position and keeps the value in channel P➀ set at the compression spring (7) constant. The pilot oil return from the spring chamber (10) is realized via port TA.

Pressure reduction in channel A➁ and B➁ ("A" and "B")

For free return flow from channel A➁ to A➀ / B➁ to B➀ , a check valve can be optionally installed (not possible with version "P").

A pressure gauge connection (3) enables control of the secondary pressure.

Type ZDR 10 VP5–3X/.YM…

component side

plate side

01

02

03

04

05

06

07

08

09

10

11

12

13

Z

DR

10

V

3X

/

Y

*

01

Sandwich plate valve

Z

02

3-way pressure reducing valve

DR

03

Size 10

10

04

Pilot-operated

V

Pressure reduction

05

In channel A2

A

In channel B2

B

In channel P1

P

Adjustment type

06

Rotary knob

4

Sleeve with hexagon and protective cap

5

Lockable rotary knob with scale

6 1)

Rotary knob with scale

7

07

Component series 30 ... 39 (30 ... 39: unchanged installation and connection dimensions)

3X

Secondary pressure

08

Up to 50 bar

50

Up to 100 bar

100

Up to 200 bar

200

Up to 315 bar

315

09

Internal pilot oil supply, external pilot oil return

Y

10

With check valve (only versions "A" and "B")

no code

Without check valve

M

Seal material

11

NBR seals

no code

FKM seals

V

Observe compatibility of seals with hydraulic fluid used. (Other seals upon request)

Connection thread

12

Pipe thread according to ISO 228/1

no code

SAE thread

12

13

Further details in the plain text

*

1) H-key with material no. R900008158 is included in the scope of delivery

Notice! Preferred types and standard units are specified in the EPS (standard price list).

general

Size

10

Weight (approx.)

Version "A"

kg

2.3

Version "P"

kg

2.3

Version "B"

kg

2.7

Ambient temperature range

NBR seals

°C

-30 … +80

FKM seals

°C

-20 … +80

Storage temperature range

NBR seals

°C

-30 ... +80

FKM seals

°C

-20 ... +80

hydraulic

Size

10

Maximum set pressure

bar

50
100
200
315

Maximum inlet pressure

Port A①

bar

315

Port B①

bar

315

Port P②

bar

315

Maximum secondary pressure

Port A②

bar

315

Port B②

bar

315

Port P①

bar

315

Maximum counter pressure

Port TA

bar

160

Port TB

bar

160

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 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

HL,HLP

NBR, FKM

DIN 51524

Bio-degradable

Insoluble in water

HETG

NBR, FKM

VDMA 24568

HEES

FKM

Soluble in water

HEPG

FKM

VDMA 24568

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 pressure differential per control edge 210 bar210 bar, otherwise, increased cavitation Life cycle compared to operation with mineral oil HL, HLP 30 to 100 % Maximum hydraulic fluid temperature 60 °C

For applications outside these parameters, please consult us!

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

pA-qV characteristic curves

pA-qV characteristic curves (up to 50 bar)

Δpmin-qV characteristic curves

Δp-qV characteristic curves

qV St-qV characteristic curves at Δp (pE – pA)

component side

plate side

Pressure reduction in channel A➁ (“A”)

Pressure reduction in channel B➁ (“B”)

Pressure reduction in channel A➁ (“A…M”)

Pressure reduction in channel B➁ (“B…M”)

Pressure reduction in channel P➀ (“P…M”)

Notice!

Deviating from ISO 4401, port T is referred to as TA and port T1 is referred to as TB in this data sheet.

Versions "A" and "P"

Dimensions in mm

plate side – Porting pattern according to ISO 4401-05-04-0-05

component side – Porting pattern according to ISO 4401-05-04-0-05

1

Name plate

2

Adjustment type "4"

3

Adjustment type "5"

4

Adjustment type "6"

5

Adjustment type "7"

6

Dimensions required to remove the key

7

Valve mounting bores

8

Lock nut SW24

9

Hexagon SW10

10

Identical seal rings for ports A➁, B➁, P➁, TA➁, TB➁ (plate side)

11

Pressure gauge connection G1/8 ; 8.5 deep; internal hexagon SW5

12

Hexagon SW30, tightening torque MA = 50 Nm

Valve mounting screws (separate order)

4 hexagon socket head cap screws ISO 4762 - M6 - 10.9-flZn-240h-L

Friction coefficient µtotal = 0.09 to 0.14,

Tightening torque MA = 12 Nm ± 10 %

Notices!

Deviating from ISO 4401, port T is referred to as TA and port T1 is referred to as TB in this data sheet. Bored for port X and Y (e. G. for pilot-operated directional valve NG10), version SO30 is applicable! The dimensions are nominal dimensions which are subject to tolerances.

Version "B"

Dimensions in mm

plate side – Porting pattern according to ISO 4401-05-04-0-05

component side – Porting pattern according to ISO 4401-05-04-0-05

1

Name plate

2

Adjustment type "4"

3

Adjustment type "5"

4

Adjustment type "6"

5

Adjustment type "7"

6

Dimensions required to remove the key

7

Valve mounting bores

8

Lock nut SW24

9

Hexagon SW10

10

Identical seal rings for ports A➁, B➁, P➁, TA➁, TB➁ (plate side)

11

Pressure gauge connection G1/8 ; 8.5 deep; internal hexagon SW5

12

Hexagon SW30, tightening torque MA = 50 Nm