41 620/112 ED
1/8
41 620/112 ED
OPERATING PRINCIPLE
— The DSA
*
are pneumatically operated (1) directional
control valves, available with 3 or 4 ways with several
interchangeable spools (2) and with mounting interface
according to ISO 4401 (CETOP RP121H) standards.
— The valve body (3) is made with high strength iron
castings provided with wide internal passages in order
to minimize the flow pressure drop.
— It is available with 2 or 3 positions with return spring, or
with 2 positions with mechanical retention.
— The Y external drain is available (standard) for the
ISO 4401-05 (CETOP R05) size and it must be
connected when there is backpressure higher than 25
bar on the T port.
DSA
*
PNEUMATICALLY OPERATED
DIRECTIONAL CONTROL VALVE
SUBPLATE MOUNTING
DSA3 ISO 4401-03 (CETOP 03)
DSA5 ISO 4401-05 (CETOP R05)
p max (see performances table)
Q nom (see performances table)
PERFORMANCES (with mineral oil of viscosity 36 cSt at 50°C)
DSA3 DSA5
Maximum working pressure:
- P, A, B ports
- T port without Y external drain
- T port with Y external drain (available for DSA5 only)
bar
350
25
-
320
25
320
Piloting pressure:
- min
- max
bar 4
12
4,5
12
Nominal flow rate l/min 75 120
Ambient temperature range °C -20 / +50
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: single operator valve
dual operator valve
kg
1,3
1,7
3,2
4,0
41 620/112 ED
2/8
DSA*
1 - IDENTIFICATION CODE
Air operated
Size:
3 = ISO 4401-03 (CETOP 03)
5 = ISO 4401-05 (CETOP R05)
Spool type (see paragraph 3)
S* TA TA23
SA* TB TB23
SB* RK
Seals:
N = NBR seals for mineral oil (standard)
V = FPM seals for special fluids
Series No.:
11 for DSA3 (the overall and mounting dimensions
remain unchanged from 10 to 19)
20 for DSA5 (the overall and mounting dimensions
remain unchanged from 20 to 29)
Directional control valve
with spool
D S A - /
3 - HYDRAULIC FLUIDS
Use mineral oil-based hydraulic fluids HL or HM type, according to ISO 6743-4. For these fluids, use NBR seals (code N). For fluids HFDR type
(phosphate esters) use FPM seals (code V). For the use of other fluid types 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.
0.75
T
B
31.75
P
A
25.9
15.5
5.1
12.7
31
M5
ø4
ø 7.5 (max)ø
7.5 (max)
21.5
30.2
40.5
33
DSA3
ISO 4401-03-02-0-05
(CETOP 4.2-4-03-350)
54
62
50.8
Y
P
B
M6
attacco "T"
facoltativo
3.2
16.7
T
A
ø 11.2 (max)
37.3
27
46
32.5
21.4
11
6.3
ø 6.3 (max)
Attacco per
drenaggio
esterno “Y"
facoltativo
DSA5
ISO 4401-05-05-0-05
(CETOP 4.2-4-R05-320)
optional
Y external
drain port
optional “T”
port
2 - MOUNTING INTERFACE
41 620/112 ED
3/8
DSA*
4 - SPOOL TYPE
SA1
S1
S2
S3
S4
S6
S7
S8
S9
S10
S11
b
PT
BAAB
TP
a
ba
PT
BA
0
ab
0
a
0
b
b
PT
BAAB
TP
a
b
a
a
b
SA2
SA3
SA4
SB1
SB2
SB3
SB4
TBTA
S5
S17
S18
S19
TB02TA02
S23
S22
S21
S20
S12
TA23 TB23
a
AB
TP
b
RK
a
b
RK02
RK1
1RK
Type S*:
2 operations - 3 positions
with spring centering
Type TA:
1 operation side A
2 external positions
with return spring
Type TB:
1 operation side B
2 external positions
with return spring
Type RK:
2 operations - 2 positions
with mechanical retention
Type SA*:
1 operation side A
2 positions (central + external)
with spring centering
Type SB*:
1 operation side B
2 positions (central + external)
with spring centering
Besides the diagrams shown, which are the most frequently used, other special versions are available: consult our technical
department for their identification and operating limits.
41 620/112 ED
4/8
DSA*
PRESSURE DROPS WITH VALVE IN DE-ENERGIZED POSITION
PRESSURE DROPS WITH VALVE IN ENERGIZED POSITION
5 - PRESSURE DROPS ∆p-Q (values obtained with viscosity 36 cSt at 50 °C)
5.1 - DSA3
2
1
356
1008060
p
25
20
15
[bar]
4020
10
5
0
Q [l/min]Q
[l/min]
4
For pressure drops between A and B lines of spools S10, S20,
S21, S22 and S23, which are used in the regenerative diagram,
refer to curve 5.
SPOOL TYPE
FLOW DIRECTION
P→A P→B A→T B→T
CURVES ON GRAPH
S1, SA1, SB1 2 2 3 3
S2, SA2, SB2 1 1 3 3
S3, SA3, SB3 3 3 1 1
S4, SA4, SB4 5 5 5 5
S5 2 1 3 3
S6 2 2 3 1
S7, S8 4 5 5 5
S9 2 2 3 3
S10 1 3 1 3
S11 2 2 1 3
S12 2 2 3 3
S17 2 2 3 3
S18 1 2 3 3
S19 2 2 3 3
S20 1 5 2
S21 5 1 2
S22 1 5 2
S23 5 1 2
TA, TB 3 3 3 3
TA02, TB02 2 2 2 2
TA23, TB23 3 3
RK 2 2 2 2
RK02 2 2 2 2
RK1, 1RK 2 2 2 2
SPOOL TYPE
FLOW DIRECTION
P→A P→B A→T B→T P→T
CURVES ON GRAPH
S2, SA2, SB2
2
S3, SA3, SB3
3 3
S4, SA4, SB4
5
S5
4
S6 3
S7, S8 6 6 5
S10 3 3
S11 3
S18 4
S22 3 3
S23 3 3
41 620/112 ED
5/8
DSA*
PRESSURE DROPS WITH VALVE IN DE-ENERGIZED POSITION
PRESSURE DROPS WITH VALVE IN ENERGIZED POSITION
5.2 - DSA5
SPOOL TYPE
FLOW DIRECTION
P→A P→B A→T B→T P→T
CURVES ON GRAPH
S2, SA2, SB2
5
S3, SA3, SB3
6 6
S4, SA4, SB4
5
S5
3
S6 6
S7 5
S10 3 3
S11 6
S18 3
S22
S23
SPOOL TYPE
FLOW DIRECTION
P→A P→B A→T B→T
CURVES ON GRAPH
S1, SA1, SB1 2 2 1 1
S2, SA2, SB2 3 3 1 1
S3, SA3, SB3 3 3 2 2
S4, SA4, SB4 1 1 2 2
S5 2 1 1 1
S6, S11 3 3 2 2
S7, S8 1 1 2 2
S9 3 3 2 2
S10 1 1 1 1
S12 2 2 1 1
S17, S19 2 2 1 1
S18 1 2 1 1
S20, S21
S22, S23
TA, TB 3 3 2 2
TA02, TB02 3 3 2 2
TA23, TB23 4 4
RK 3 3 2 2
RK02 3 3 2 2
RK1, 1RK 3 3 2 2
41 620/112 ED
6/8
DSA*
6 - 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.
NOTE: The values indicated in the graphs are relevant to the standard valve. The operating limits can be considerably reduced if a
4-way valve is used with port A or B plugged or without flow.
6.1 - DSA3
200
0
50
150
100
25
250
300
[bar]
350
p
50
Q [l/min]
75
1
3
2
4
3
5
4
5
2
350
[bar]
250
150
100
200
300
0
25
50
50 75 100 120
Q [l/min]
p
1
2
4
3
4
3
6.2 - DSA5
* NOTE: for spools S3 and TA, the curve has been obtained with a
min. piloting pressure of 4,5 bar. If the minimum piloting pressure
used is 5,5 bar, refer to the curve n° 1 (320 bar - 120 l/min).
SPOOL TYPE CURVE
P→A P→B
S1,SA1,SB1 1 1
S2, SA2, SB2 1 1
S3, SA3, SB3 2 2
S4, SA4, SB4 3 3
S5 1 1
S6 3 2
S7 3 3
S8 3 3
S9 1 1
S10 1 1
S11 2 3
S12 1 1
SPOOL TYPE CURVE
P→A P→B
S17 1 1
S18 1 1
S19 1 1
S20 4 4
S21 4 4
S22 5 4
S23 4 5
TA, TB 1 1
TA02, TB02 1 1
TA23, TB23 1 1
RK 1 1
RK02 1 1
RK1, 1RK 1 1
SPOOL TYPE CURVE
P→A P→B
S1,SA1,SB1 1 1
S2, SA2, SB2 1 1
S3, SA3, SB3 3 * 3 *
S4, SA4, SB4 4 4
S5
S6
S7
S8
S9
S10
S11
S12
SPOOL TYPE CURVE
P→A P→B
S17
S18
S19
S20
S21
S22
S23
TA, TB 2 * 2 *
TA02, TB02
TA23, TB23
RK
RK02
RK1, 1RK
8 - DSA3 OVERALL AND MOUNTING DIMENSIONS
P
B
A
T
A
P
B
7.5
11.2
2
33
2
1
56
65
177
22.5
ø42
50.5
47
46
dimensions in mm
DSA3 - S*
DSA3 - RK
P
B
A
T
A
P
B
7.5
11.2
2
3
1
8
65
129
22.5
ø42
50.5
47
56
DSA3 - TA
DSA3 - SA*
DSA3 - TA23
operation position configuration SB*, TB and TB23
41 620/112 ED
7/8
DSA*
7 - INSTALLATION
Configurations with centering and return springs can be mounted in any position; type RK valves -
without springs and with mechanical detent - 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
1 Mounting surface with sealing rings:
N. 4 OR type 2037 (9.25x1.78)
90 Shore
2 1/4” BSP connection for pneumatic
operator
3 Hexagon: spanner 38
Tightening torque 35 ÷ 40 Nm
Valve fastening: N. 4 SHC screws ISO 4762 -
M5x30
Tightening torque: 5 Nm (bolts A 8.8)
Threads of mounting holes: M5x10
41 620/112 ED
8/8
DUPLOMATIC OLEODINAMICA S.p.A.
20015 PARABIAGO (MI)  Via M. Re Depaolini 24
Tel. +39 0331.895.111
Fax +39 0331.895.339
www.duplomatic.com  e-mail: sales.exp@duplomatic.com
DSA*
REPRODUCTION IS FORBIDDEN. THE COMPANY RESERVES THE RIGHT TO APPLY ANY MODIFICATIONS.
A
TA
Y
B
TB
P
1
60.5
97
218
31
ø48
74.5
71
70
2
33
2
12
21.4
A
TA
Y
B
TB
P
2
3
12
21.4
1
60.5
97
169
31
ø48
74.5
71
11.5
DSA5 - TA
DSA5 - SA*
DSA5 - TA23
DSA5 - S*
DSA5 - RK
9 - DSA5 OVERALL AND MOUNTING DIMENSIONS
operation position configuration SB*, TB and TB23
DSA3 DSA5
Type with rear ports PMMD-AI3G PMD4-AI4G - 3/4” BSP threaded
Type with side ports PMMD-AL3G PMD4-AL4G - 1/2” BSP threaded
Threading of ports P, T, A and B 3/8” BSP
10 - SUBPLATES (see catalogue 51 000)
dimensions in mm
1 Mounting surface with sealing rings:
N. 5 OR type 2050 (12.42x1.78)
90 Shore
N. 1 OR type 2037 (9.25x1.78)
90 Shore
2 1/4” BSP connection for pneumatic
operator
3 Hexagon: spanner 38
Tightening torque 35 ÷ 40 Nm
Valve fastening: N. 4 SHC screws ISO 4762 -
M6x40
Tightening torque: 8 Nm (bolts A 8.8)
Threads of mounting holes: M6x10