ZDR 10 V 1/4 RE 26 861/02.03
© 2003
by Bosch Rexroth AG, Industrial Hydraulics, D-97813 Lohr am Main
All rights reserved. No part of this document may be reproduced or stored, processed, duplicated or circulated using
electronic systems, in any form or by any means, without the prior written authorisation of Bosch Rexroth AG.
In the event of contravention of the above provisions, the contravening party is obliged to pay compensation.
Overview of contents
Contents Page
Features 1
Ordering details 1
Preferred types 2
Symbols 2
Function, section 2
Technical data 3
Characteristic curves 3
Unit dimensions 4
RE 26 861/02.03
Replaces: 12.02
Pressure reducing valve, pilot operated
Type ZDR 10 V
Nominal size 10
Series 3X
Maximum operating pressure 315 bar
Maximum flow 100 L/min
Type ZDR 10 VA5-3X/...Y...
R 83/5
Features
– Sandwich plate valve
–Porting pattern to DIN 24 340 Form A,
ISO 4401 and CETOP–RP 121 H
–4 pressure stages
–4 adjustment elements:
• Rotary knob
• Sleeve with hexagon and protective cap
• Lockable rotary knob with scale
• Rotary knob with scale
– Check valve, optional (VA, VB)
– Pressure gauge connection, optional
*
Ordering details
ZDR10V –3X Y
Sandwich plate = Z
valve
Pressure reducing valve = DR
Nominal size 10 = 10
Pilot operated = V
Reduced pressure in port A2 = A
Reduced pressure in port B2 = B
Reduced pressure in port P1 = P
Adjustment elements
Rotary knob = 4
Sleeve with hexagon and protective cap = 5
Lockable rotary knob with scale = 6
1)
Rotary knob with scale = 7
Series 30 to 39 = 3X
(30 to 39: unchanged installation and connection dimensions)
Further details in clear text
No code = NBR seals
V = FKM seals
(other seals on request)
Attention!
The compatibility of the seals and pressure
fluid has to be taken into account!
No code = With check valve
(not possible for version VP)
M = Without check valve
Y = Internal pilot oil supply, external pilot oil drain
50 = Secondary pressure up to 50 bar
100 = Secondary pressure up to 100 bar
200 = Secondary pressure up to 200 bar
315 = Secondary pressure up to 315 bar
1)
H-key with Material No. R900008158 is included within the scope of supply
RE 26 861/02.03 2/4 ZDR 10 V
P2A2TA2 B2 TB2
P2A1TA1 B1 TB1
4 10 1 789 5 6 23
Type ZDR 10 VP5–3X/…YM…
Preferred types (readily available)
Further preferred types and standard units can
be found in the EPS (Standard Price List).
Function, section
Pressure valves type ZDR 10 V are pilot operated pressure valves of
sandwich plate design.
They are used to reduce a system pressure.
The valves consist of the cartridge (1) and a housing (2). The reduced
pressure is set via the adjustment element (4).
Version "VP"
At rest, the valve is normally open, and fluid can flow unhindered
from port P2 to port P1. Pressure in port P1 is simultaneously also
present at the main spool (6), via orifice (5), and on the spring loaded
inner side of the main spool (6). The pressure is also present via
orifice (9) on the pilot poppet (8).
When the pressure in port P2 exceeds the pressure level set at the
spring (7), then the pilot poppet (8) opens. Pressure fluid then flows
from the spring loaded inner side of the main spool (6) via orifice (9),
and the pilot poppet (8) into the spring chamber (10) to tank. The
main spool (6) moves into the control position and holds the pressure
set at spring (7) in port P1 constant. Pilot oil drain from spring chamber
(10) is via port TA.
Versions "VA" and "VB"
For versions VA and VB, the pressure is reduced in ports A2 or B2.
In order to allow free reverse flow from port A2 to A1, or B2 to B1 an
optional check valve may in included (this is not possible for version
VP).
An optional pressure gauge connection (3) allow the secondary
pressure to be monitored.
APB
1
2
TBTA
M
APB
1
2
TB
TA
M
Symbols ( 1 = component side, 2 = subplate side)
Type ZDR 10 VA…-3X/…Y… Type ZDR 10 VB…-3X/…Y…
APB
1
2
TBTA
M
APB
1
2
TB
TA
M
APB
1
2
TBTA
M
Type ZDR 10 VA…-3X/…YM… Type ZDR 10 VB…-3X/…YM… Type ZDR 10 VP…-3X/…YM…
Type Material number
ZDR 10 VA5-3X/50Y R900434583
ZDR 10 VA5-3X/100Y R900436537
ZDR 10 VA5-3X/200Y R900444003
ZDR 10 VB5-3X/100Y R900457022
ZDR 10 VB5-3X/200Y R900462912
ZDR 10 VP5-3X/100YM R900411309
Type Material number
ZDR 10 VP5-3X/200YM R900411311
ZDR 10 VP5-3X/315YM R900438840
ZDR 10 V 3/4 RE 26 861/02.03
Technical data (for applications outside these parameters, please consult us!)
Settable pressure bar Up to 50; up to 100; up to 200, up to 315
Inlet pressure (ports A1, B1 or P2) bar Up to 315
Secondary pressure (ports A2, B2 or P1) bar Up to 315
Back pressure (ports TA, TB) bar Up to 160
Flow, max. L/min Up to 100
Pressure fluid Mineral oil (HL, HLP) to DIN 51 524
1)
;
Fast bio-degradable pressure fluid is to
VDMA 24 568 (also see RE 90 221); HETG (rape seed oil)
1)
;
HEPG (polyglycols)
2)
; HEES (synthetic ester)
2)
;
Other pressure fluids on request
Pressure fluid temperature range °C– 30 to + 80 (NBR seals)
– 20 to + 80 (FKM seals)
Viscosity range mm
2
/s 10 to 800
Cleanliness class to ISO code Maximum permissible degree of contamination of the pressure
fluid is to ISO 4406 (C) class 20/18/15
3)
Ambient and storage temperature range °C– 30 to + 80 (NBR seals)
– 20 to + 80 (FKM seals)
Weight kg Approx. 2.3 (versions VA and VP); approx. 2.7 (version VB)
3)
The cleanliness class stated for the components must be adhered too in hydraulic systems. Effective
filtration prevents faults from occurring and at the same time increases the component service
life. For the selection of filters see catalogue sheets RE 50 070, RE 50 076 and RE 50 081.
0 10020
50
315
40 60 80
100
150
200
250
300
0 10020
10
40 60 80
20
30
40
50
8
9
0 10020 40 60 80
30
5
10
15
20
25
1
3
2
0 10020
5
40 60 80
10
15
20
25
30
4
5
0 10020 40 60 80
0,3
0,4
0,5
0,6
6
7
Characteristic curves (measured with HLP46,
ϑ
oil
= 40 °C ± 5 °C)
Flow
in L/min →
Pilot oil flow
in L/min →
q
V St
–
q
V
–characteristic curves for
∆p
(
p
E
–
p
A
)
1 P2 to P1 (version VP)
2 A1 to A2 (version VA)
3 B1 to B2 (version VB)
4 A2 to A1 (version VA)
5 B2 to B1 (version VB)
6
∆p
= 50 bar
7
∆p
= 250 bar
8 Actuator resistance is system dependent
9 Lowest settable secondary pressure
p
A
for all pressure stages
Flow
in L/min → Flow
in L/min →
p
A
–
q
V
–characteristic curves
Secondary pressure in bar →
Secondary pressure in bar →
p
A
–
q
V
–characteristic curves for ranges up to 50 bar
Flow
in L/min →
Flow
in L/min →
Pressure differential in bar →
Min. pressure differential
in bar →
∆p
min
–
q
V
–characteristic curves
∆p
–
q
V
–characteristic curves
1)
Suitable for NBR and FKM seals
2)
Only suitable for FKM seals
RE 26 861/02.03 4/4 ZDR 10 V
Bosch Rexroth AG
Industrial Hydraulics
D-97813 Lohr am Main
Zum Eisengießer 1 • D-97816 Lohr am Main
Telefon 0 93 52 / 18-0
Telefax 0 93 52 / 18-23 58 • Telex 6 89 418-0
eMail documentation@boschrexroth.de
Internet www.boschrexroth.de
The data specified above only serves to describe
the product. No statements concerning a certain
condition or suitability for a certain application
can be derived from our information.
The details stated do not release you from the
responsibility for carrying out your own
assessment and verification. It must be
remembered that our products are subject to a
natural process of wear and ageing.
Bosch Rexroth Limited
Cromwell Road, St Neots,
Cambs, PE19 2ES
Tel: 0 14 80/22 32 56
Fax: 0 14 80/21 90 52
E-mail: info@boschrexroth.co.uk
0,01/100mm
R
max
4
104
190,7
214,7
3
8291
18
50
1,5
26
Ø15,7
Ø32
14
54
58,6
50,8
4 x Ø 6,7
P
A
B
TB
TA
51,3
3
51
29,5
12
Ø 30
Ø 35
28,5
8
46
69
18
3
0
6 45
110
7
2
8
3
9
11
61
Ø30
89,2
113,2
3
8291
18
50
54
Ø35
4 x Ø 6,7
P
A
B
TA
0,5
116,5
Ø32
TB
20
44
53,8
4
70
46
61,5
12
0
1
54 6
10
8
2
89
3
11
Unit dimensions (dimensions in mm)
Types ZDR 10 VA…
ZDR 10 VP…
Note:
For X and Y ports as drillings (e.g. for
pilot operated directional valve NS 10) use
version SO30!
Required surface finish of the
mating piece
Type ZDR 10 VB…
1 Name plate
2
Adjustm. element "4"
3
Adjustm. element "5
"
4
Adjustm. element "6"
5
Adjustm. element "7"
6 Space required to
remove the key
7 Valve fixing screw holes
8 Locknut 24A/F
9 Hexagon 10A/F
10 Identical seals for
ports A2, B2, P2, TA2, TB2
11 Pressure gauge connection
G 1/8; 8.5 deep;
Internal hexagon 5A/F
Valve fixing screws
M6 DIN 912-10.9,
Tightening torque
M
A
= 15.5 Nm,
must be ordered separately.
