()1740
(870)
0
5
10
15
20
25
60
102
30
(.)13 (.)26 ()4.0 (.)66 (
.9)
7(.)53
30
(435)
( 305)1
90
(2175)
150
( 160)1
(580)
0
5
10
15
20
25
40
80
20
(.)13 (.)26 ()4.0 (.)66 (
.9)
7(.)53
30
(290)
(870)
60
(1450)
100
SS4A-A3
3/4-16 UNF • Q
max
30 l/min (8 GPM) • p
max
350 bar (5100 PSI)
Symbol
2
3
1
1
3
2
2-3
1-2
1-2
Subject to change · SS4A-A3_5049_1en_02/2016
Page 1
www.argo-hytos.com
Sequence Valve, Internal Pilot and Drain, Spool-Type, Direct-Acting
Technical Features
Functional Description
Technical Data
Characteristics measured at ν = 32 mm
2
/s (156 SUS)
A direct-acting, spool-type hydraulic sequence valve in the form of a screw-in cartridge with internal pilot and
spring chamber drain. The valve directs the uid to the secondary circuit when the input pressure exeeds the
pre-set pressure. In the neutral position, the valve blocks ow at port 1 (inlet), while allowing ow to pass from
port 2 to 3 (tank). When the pressure on port 1 reaches the pre-set pressure, the cartridge opens the
connection between port 1 to 2. Back pressure on port 3 adds to the pressure pre-set by the spring.
› Excellent stability throughout ow range with rapid response to dynamic pressure changes
› Low hysteresis, accurate pressure control and low pressure drop
› Pressure range up to 350 bar
› Hardened precision parts
› Adjustable by allen key
› In the standard version, the valve is zinc-coated for 240 h protection acc. to ISO 9227
Valve size / Cartridge cavity 3/4-16 UNF-2A / A3
Max. ow l/min (GPM) 30 (7.9)
Max. operating pressure bar (PSI) 350 (5080)
Max. preset pressure bar (PSI) 240 (3480)
Fluid temperature range (NBR) °C (°F) -30 ... +100 (-22 ... 212)
Fluid temperature range (FPM) °C (°F) -20 ... +120 (-4 ... 248)
Mass kg (Ibs) 0.23 (0.51)
Datasheet Type
General information GI_0060 Products and operating conditions
Valve bodies
In-line mounted SB_0018 SB-A3*
Sandwich mounted SB-04(06)_0028 SB-*A3*
Cavity details / Form tools SMT_0019 SMT-A3*
Spare parts SP_8010
Relief pressure related to flow rate
Pressure drop ∆p [bar (PSI)]
Flow Q [l/min (GPM)]
Flow Q [l/min (GPM)]
Pressure p [bar (PSI)]
Pressure drop related to flow rate
Example of factory preset valve,
at 120 bar (1740 PSI), 5 l/min (1.3 GPM)
SS4A-A3 / -
30+2 Nm
(22.1+1.5 ft-lbf)
6+1Nm
(4.4+0.7 ft-lbf)
22
10
5
3/4-16UNF-2A
15,7(0.62)
14,1(0.56)
40,5(1.59)
99,5(3.92)
max. 115 (4.53)
24(0.95)
H
A
B
S
5
24
Subject to change · SS4A-A3_5049_1en_02/2016
Page 2
www.argo-hytos.com
Sequence valve, internal pilot and drain,
spool-type, direct-acting
3/4-16UNF
Model
High performance
Dimensions in millimeters (inches)
Ordering Code
Pressure range
10 - 50 bar (150 - 730 PSI)
50 - 240 bar (730 - 3480 PSI)
No designation
V
Seals
NBR
FPM (Viton)
Surface treatment
zinc-coated (ZnCr-3), ISO 9227 (240 h)
zinc-coated (ZnNi), ISO 9227 (520 h)
Adjustment option
allen key (hex. 5), without protective cap
