41 610/117 ED
1/4
0.750.75
TT
BB
31.7531.75
PP
AA
25.925.9
15.515.5
5.15.1
12.712.7
3131
M5M5
ø4ø 4
ø7.5(max)ø7.5(max)
21.521.5
30.230.2
40.540.5
3333
41 610/117 ED
DSR3
ROLLER CAM OPERATED
DIRECTIONAL CONTROL VALVE
SERIES 11
SUBPLATE MOUNTING
ISO 4401-03
p max
350 bar
Q nom 75 l/min
MOUNTING INTERFACE
ISO 4401-03-02-0-05
(CETOP 4.2-4-03-350)
T
P
T
AB
PERFORMANCE RATINGS
(obtained with mineral oil with viscosity of 36 cSt at 50°C)
OPERATING PRINCIPLE
AB
T
P
T
DSR3H
DSR3L
— The DSR3* are roller cam operated directional control
valves, available with 4 ways, with mounting interface
according to ISO 4401 standards.
— The valve body is made with high strength iron castings
provided with wide internal passages in order to minimize
the flow pressure drop.
— It is available in LIGHT (short) and HEAVY DUTY (long)
versions, with 2 positions with return spring or with 2
positions with double mechanical command.
— The roller of the valve operating device can be positioned
at 90° with respect to the valve mounting surface, in order
to achieve flexible installation.
— This type of valve can be used as a hydraulic stroke end
for cylinders, speed selectors (not compensated),
hydraulic safety devices, directional control of hydraulic
axes.
Maximum operating pressure:
- P A B ports
- T ports
bar 350
25
Nominal flow rate l/min 75
Pressure drop ∆p-Q see par. 4
Operating limits see par. 5
Ambient temperature range °C -20 / +60
Fluid temperature range °C -20 / +80
Fluid viscosity range cSt 10 ÷ 400
Fluid contamination degree
according to
ISO 4406:1999
class 20/18/15
Recommended viscosity cSt 25
Mass: DSR3L-TA
DSR3L-R
DSR3H-TA
kg
1,1
1,2
1,2
41 610/117 ED
2/4
DSR3
SERIES 11
1 - IDENTIFICATION CODE
Directional control
valve with spool
Roller cam operated
ISO 4401-03 size
Version:
L = LIGHT (short)
H = HEAVY DUTY (long)
Spool type (see par. 3)
TA
R (available only for DSR3L version)
Series No. (the overall and mounting dimensions
remain unchanged from 10 to 19)
Seals:
N = NBR seals for mineral oil (standard)
V = FPM seals for special fluids
D S R 3 - 11/
3 - SPOOL TYPE
b
b
AB
PT
b
a
a
aR
b
B
T
A
a
P
a
TA
a
Type TA:
2 external positions
with return spring
Type R:
2 positions
with double mechanical command
2 - HYDRAULIC FLUIDS
Use mineral oil-based hydraulic fluids HL or HM type, according to ISO 6743-4. For these fluids, use NBR seals. For fluids HFDR type
(phosphate esters) use FPM seals (code V). For the use of other kinds of fluid such as HFA, HFB, HFC, please consult our technical
department.
Using fluids at temperatures higher than 80 °C causes a faster degradation of the fluid and of the seals characteristics. The fluid must be
preserved in its physical and chemical characteristics.
41 610/117 ED
3/4
DSR3
SERIES 11
4 - PRESSURE DROPS ∆p-Q (obtained with viscosity 36 cSt at 50 °C)
5 - OPERATING LIMITS
The curves define the flow rate operating fields according to the valve pressure of the different versions. The values have been obtained
according to ISO 6403 norm, with mineral oil viscosity 36 cSt at 50 °C and filtration according to ISO 4406:1999 class 18/16/13.
0
50
100
150
250
200
300
[bar]
350
p
Q[l/min]
755025
1
2
2
6 - INSTALLATION
Configurations with centering and return springs can be mounted in any position; type R valves -
without springs - must be mounted with the longitudinal axis horizontal. Valve fixing is by means of
screws or tie rods, with the valve mounted on a lapped surface, with values of planarity and
smoothness that are equal to or better than those indicated in the drawing. If the minimum values of
planarity and/or smoothness are not met, fluid leakage between valve and mounting surface can
easily occur.
Surface finishing
SPOOL TYPE
FLOW DIRECTION
P→A P→B A→T B→T
CURVES ON GRAPH
DSR3L-TA 1 1 1 1
DSR3L-R 1 1 1 1
DSR3H-TA 1 1 1 1
SPOOL TYPE CURVE
P→A P→B
DSR3L-TA 2 2
DSR3L-R 1 1
DSR3H-TA 1 1
41 610/117 ED
4/4
DSR3
SERIES 11
REPRODUCTION IS FORBIDDEN. THE COMPANY RESERVES THE RIGHT TO APPLY ANY MODIFICATIONS.
A
P
B
C
amma
Max.30°
1
2
3
BA
A
P
B
T
PT
P
A
T
B
±
0.2
±0.2
1.3
1.1
±0.2
1.3
115. 3
2
2
8.4
corsa3.7
46
47
6
5
11
50.5
11.2
A
P
B
T
ø30
41.6
22.5
7.5
Camma
Max.30°
2.7
TP
P
AB
T
AB
1
2.3
P
A
T
B
±
0.1
corsa6
3
7.5
11.2
A
P
B
T
ø30
74.3
2
A
P
B
1
156
45
46
47
65
14.5
50.5
22.5
26.1
82.3
±0.1
±0.1
7 - OVERALL AND MOUNTING DIMENSIONS
DSR3L - TA
DSR3H - TA
DSR3L - R
1 Mounting surface with sealing rings
4 OR type 2037 (9.25x1.78) - 90 Shore
2 Roller for valve operation
(see NOTE)
3 Socket hex cap screw for
roller operation: DSR3L spanner 2
DSR3H spanner 2,5
dimensions in mm
NOTE: The valve is supplied as standard
with the operating roller oriented
perpendicularly to the mounting surface.
The roller can also be turned by the user at
90° of the standard position:
- untight the locking nut and the socket hex
screw (ref. 3) until the spool and the
relevant roller move freely.
- rotate through 90° the spool with the roller.
- tighten the fixing screw (ref. 3) being
careful that it goes inside the spool anti-
rotation slot, without preventing the spool
movement.
Type PMMD-AI3G with rear ports 3/8” BSP
Type PMMD-AL3G with side ports 3/8” BSP
9 - SUBPLATES (see catalogue 51 000)
A
P
B
125.8
22(8.4)
65
4
1.6
22 8.4
C
am
Max stroke 3.7
Cam
Max stroke 6
8 - VALVE FASTENING BOLTS
N. 4 fastening bolts SHC ISO 4762 M5x30
Tightening torque 5 Nm (bolts A 8.8)