TECHNICAL CATALOGUE
SLSE_EN_2026_01
SLSE
SECTIONAL
PROPORTIONAL
DIRECTIONAL VALVE
FOR LOAD SENSING
315 bar 45 l/min
SECTIONAL DIRECTIONAL CONTROL VALVE
S L S E - Technical Data
2
SLSE_EN_2026_01
INTRODUCTION
FLUIDS
OPERATING PARAMETERS
HYDRAULIC SYMBOLS FOR WORKING SECTIONS
The SLSE is a sectional directional control valve with load sensing feature.
It can be assembled with up to 8 working sections (proportional and
solenoid valves together).
Each module is equipped with a meter-in compensator that keeps the flow
costant, independently from load changes.
Sections equipped with pressure compensators are not affected by other
operating functions, provided that sufficient pump capacity is available.
For correct operation, the total simultaneous flow demand must not
exceed 90% of the inlet flow rate.
BSPP- or SAE-threaded ports are available. Additional connections are
available on the inlet sections for convenient connection.
The manual lever override is available as option.
STEP
RESPONSE
0 100% 50 ms
100 0% 40 ms
HYSTERESIS % of Q max < 6%
REPEATABILITY % of Q max < ± 2%
VOLTAGE
12V DC
24V DC
COIL
CONNECTION
DIN 43650 DT04-2P
WEIGHT working section 4.5 kg 10 lbs
RANGE
TEMPERATURES:
ambient -20 to +60 °C - 4 to +140 °F
fluid -20 to +82 °C - 4 to +180 °F
FLUID VISCOSITY
range 10 - 400 cSt 60 -1900 SUS
recommended 25 cSt 120 SUS
FLUID
CONTAMINATION
ISO 4406:1999
class 18/16/13
Use mineral oil-based hydraulic fluids HL or HM type, or fluids HFDR type
(phosphate esters). 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 (180 °F) causes the
accelerated degradation of seals as well as the fluid physical and chemical
properties.
MAXIMUM
OPERATING
PRESSURE
P - A - B ports 315 bar 4570 psi
T port 20 bar 290 psi
FLOW CAPACITY
WITH Δp 10 BAR
(145 PSI )
A - B ports 45 l/min 12 gpm
P port 100 l/min 26 gpm
T port 120 l/min 32 gpm
SLSE-*D
SLSE*-*-A***B***
SLSE*-*-PL
SLSE-*H
SECTIONAL DIRECTIONAL CONTROL VALVE
S L S E - Model Number - Working sections
3
SLSE_EN_2026_01
with p P-T 8 bar (116 psi)
09 9 l/min (2.4 gpm)
25 25 l/min (6.5 gpm)
45 45 l/min (12 gpm)
25-15 25/15 l/min asymmetrical
45-30 45/30 l/min asymmetrical
SLSE - - - - 2
design mark
-
CODE EXAMPLES:
SLSE-A25C-D12K7-VM-2
SLSE-D25C-A235B235-D12K7-VM-2
SLSE-D25C-PL- D12WK7-VB-2
MANUAL OVERRIDE
M
built-in with the tube,
pin (standard) (*)
B
built-in with the tube,
boot protected
K knob, turning
L hand lever
COILS
K1 DIN 43650
K2 AMP Junior
K7 DT04-2P ‘deutsch’
WK1
DIN 43650
zinc-nickel plated
WK7
DT04-2P ‘deutsch’
zinc-nickel plated
SEAL
V Viton
AUXILIARY VALVE
side A
A..
anti-cavitation +
anti-shock
AUXILIARY VALVE
side B
B..
anti-cavitation +
anti-shock
PRESSURE LIMITATION
PL
pressure signal (AB)
for remote valve
VOLTAGE
D12 12 V DC
D24 24 V DC
SPOOLS
SYMBOL DESCRIPTION APPLICATION
C closed centre
proportional
meter in / meter out
A open centre
PA line A
proportional, single flow,
function type D,
Available nominal flows:
30 l/min and 45 l/min
PB line B
ADDITIONAL
FEATURES
omit if not required
PORTS SIZE
B2 1/2” BSPP
S2 3/4”-16 UNF
A.. and B.. add the desired set pressure value to the letter:
available pressures: 100, 150, 190, 235, 280, 300, 350.
(*) This manual override
is not available with ‘WK*’
coil types.
FUNCTION
D
double solenoid
3 positions - spring centred
A
single solenoid at side A
2 positions - spring return
B
single solenoid at side B
2 positions - spring return
H
remote hydraulic actuation
SEE NEXT PAGE
NOMINAL FLOW
with p P-T 4 bar (58 psi)
05 5 l/min (1.3 gpm)
15 15 l/min (4 gpm)
30 30 l/min (7.9 gpm)
15-10 15/10 l/min asymmetrical
30-20 30/20 l/min asymmetrical
REMOTE HYDRAULIC ACTUATED WORKING SECTION
SECTIONAL DIRECTIONAL CONTROL VALVE
S L S E - Model Number - Working sections
4
SLSE_EN_2026_01
with p P-T 8 bar (116 psi)
09 9 l/min (2.4 gpm)
25 25 l/min (6.5 gpm)
45 45 l/min (12 gpm)
25-15 25/15 l/min asymmetrical
45-30 45/30 l/min asymmetrical
SLSE -B2 - V - 2
design mark
CODE EXAMPLES:
SLSE-B2H30C-V-2
SLSE-B2AH30A-V-2
SEAL
V Viton
SPOOLS
SYMBOL DESCRIPTION APPLICATION
C closed centre
proportional
meter in / meter
out
A open centre
PA line A
proportional
single flow
function type D,
flows 35 and 40
only
PB line B
PORTS SIZE
B2 1/2” BSPP
NOMINAL FLOW
with p P-T 4 bar (58 psi)
05 5 l/min (1.3 gpm)
15 15 l/min (4 gpm)
30 30 l/min (7.9 gpm)
15-10 15/10 l/min asymmetrical
30-20 30/20 l/min asymmetrical
The section shall be operated by a remote regulated pressure line, via positioning device with pressure reducer, and directly connected to
the working section.
The spool movement depends on the difference between control pressure and return pressure and is therefore sensitive to return line
conditions.
FUNCTION
H
double actuation
3 positions - spring centred
HA
actuation at side A
2 positions - spring return
HB
actuation at side B
2 positions - spring return
OUTLET SECTION
PROPORTIONAL DIRECTIONAL VALVE
S L S E - Model number - Inlet / Outlet sections
5
SLSE_EN_2026_01
SLSX - 04S - V - 1
design mark
SEAL
V Viton
FLANGEABLE TOP MODULE
SLSZ - PCD - A - V - 1
FUNCTION
PC pilot check valve
design mark
MATERIAL
A aluminium
EFFECT
D double
Aluminium
p max = 230 bar
Q max = 30 l/min
BASIC INLET SECTIONS
INLET SECTIONS WITH COMPENSATOR
SEAL
V Viton
MATERIAL
S steel
SEAL
V Viton
FUNCTION
F for fixed pump
V for variable pump
RELIEF VALVE
000 no relief valve
210 up to 210 bar
315 up to 315 bar
SLSX- - S - V - 4
design mark
design mark
SLSX - S - V - 1
PORTS SIZE
B3 3/4” BSPP
PORTS SIZE
B1 1/4” BSPP
PORTS SIZE
B3 3/4” BSPP
S25 7/8” -14 UNF
MATERIAL
S steel
MATERIAL
S steel
SEAL
V Viton
BLANKING SECTION
04
Blanking section
with load sensing port
PROPORTIONAL DIRECTIONAL VALVE
S L S E - Performance Curves
6
SLSE_EN_2026_01
Typical constant flowrate obtained through the embedded compensator, and current with 12V solenoid type (for D24 version the maxi-
mum current is 860 mA).
PRESSURE DROPS Δp-Q - SYMMETRICAL SPOOLS TYPE C, A
PRESSURE DROPS Δp-Q - ASYMMETRICAL SPOOLS TYPE C, A
FLOWRATE BY PRESSURE
PRESSURE DROPS Δp-Q OF INLET SECTIONS TYPE F, V
The proportional solenoid consists of tube and coil.
The coil is fit on the tube and fastened to it by a ring retainer.
The coils can be indexed to any position allowing for
convenient location of the connector.
Contact us to order coils as spare parts.
PROPORTIONAL DIRECTIONAL VALVE
S L S E - Electrical Data
7
SLSE_EN_2026_01
DUTY CYCLE 100%
ELECTROMAGNETIC
COMPATIBILITY (EMC)
according to
European directive
2014/30/EU
PROTECTION
CLASS FOR
INSULATION
copper wire class H (180 °C)
coil class F (155 °C)
Nominal
voltage
[V]
Resistance
at 20 °C
[]
Current
at 20 °C.
[A]
D12 12 4.4 1.88
D24 24 18.6 0.86
PROPORTIONAL DIRECTIONAL VALVE
S L S E - Electrical Connections and IP Degrees
8
SLSE_EN_2026_01
The declared IP ratings are intended according to EMC 2014/30/EU, only for both valve and connectors of equivalent IP degree, installed
properly.
WK1 and WK7 coils reach a better IP rating than standard coils thanks to the zinc-nickel plating and a number of design precautions.
The valves with these coils have a salt spray resistance up to 600 hours (test performed according to UNI EN ISO 9227 and assessment
test performed according to UNI EN ISO 10289).
K2
DEUTSCH DT04 MALE
Zinc-nickel plated coil.
IP degree of electrical connection: IP66/IP68/IP69
IP degree of whole valve: IP66/IP68/IP69
IP degree according to ISO 20653: IP69K
The pin for manual override is boot-protected (code B).
DEUTSCH DT04 MALE
IP degree of electrical connection: IP65/IP67
IP degree of whole valve: IP 65
WK7
K7
AMP Junior
IP degree of electrical connection: IP65/IP67
IP degree of whole valve: IP 65
K1
DIN 43650 (EN 175301-803)
IP degree of electrical connection: IP65
IP degree of whole valve: IP 65
DIN 43650 (EN 175301-803)
Zinc-nickel plated coil.
IP degree of electrical connection: IP66
IP degree of whole valve: IP66
The pin for manual override is boot-protected (code B).
WK1
DIN connector
always included
DIN connector
always included
PROPORTIONAL DIRECTIONAL VALVE
S L S E - Sectional Valve Installation Data
9
SLSE_EN_2026_01
SLSE WORKING SECTION - DOUBLE SOLENOID (K7 COIL)
SLSE WORKING SECTION - SINGLE SOLENOID SIDE B (K7 COIL)
dimensions in mm [in]
mounting
surface with
sealing rings:
4 OR 2056
90 shore A
no. 6 holes
M6x10
coil removal
space
asymmetrical overall dimensions
of the inlet section
manual override
integrated in the
solenoid tube
(code M)
A and B working ports:
1/2” BSP or 3/4”-16 UNF
A and B working ports:
1/2” BSP or 3/4”-16 UNF
solenoid position for
A function
SECTIONAL DIRECTIONAL CONTROL VALVE
S L S E - Sectional Valve Installation Data
10
SLSE_EN_2026_01
SLSE*-*-A***B*** WORKING SECTION - WITH AUXILIARY VALVES (K7 COIL)
dimensions in mm [in]
mounting
surface with
sealing rings:
4 OR 2056
90 shore A
coil removal
space
asymmetrical overall dimensions
of the inlet section
manual override
integrated in the
solenoid tube
(code M)
auxiliary
valves
A and B working ports:
1/2” BSP or 3/4”-16 UNF
A
B
SECTIONAL DIRECTIONAL CONTROL VALVE
S L S E - Sectional Valve Installation Data
11
SLSE_EN_2026_01
SLSE*-*-PL WORKING SECTION - WITH PILOT PORT FOR REMOTE PRESSURE LIMITATION (K7 COIL)
A and B working ports:
1/2” BSP or 3/4”-16 UNF
PL port:
1/4” BSP or
9/16-18 UNF -UN-2B
A and B working ports:
1/2” BSP
Xa and Xb pilot ports:
1/4” BSP
This special configuration has to be intended for use with a remote pressure control valve. The pilot signal coming from this port is from
both the working ports, A and B.
pilot port for Pressure Limitation
signal
SLSE-B2H* WORKING SECTION - HYDRAULIC ACTUATED
The control device may be on side A, side B, or on both sides, depending on the selected configuration.
hydraulic operator: 1/4” BSP port
Control Characteristic
p = 5 bar per metering edge;
NOTE: curve valid without back
pressure in the T line
SECTIONAL DIRECTIONAL CONTROL VALVE
S L S E - Sectional Valve Installation Data
12
SLSE_EN_2026_01
SLSZ-PCD-A-V-1 FLANGEABLE TOP ELEMENT
cracking pressure: 3 bar
fixing screws: M6x50
A and B working ports:
1/2” BSP
Aluminium
p max = 230 bar
Q max = 30 l/min
PROPORTIONAL DIRECTIONAL VALVE
S L S E - Manual Overrides (Sectional Valve)
13
SLSE_EN_2026_01
The standard valve has override pins integrated in the tube
(code M). The operation of this control must be executed with
a suitable tool, carefully so as not to damage the sliding sur-
face.
Further manual overrides are available, entering the proper
code in the model number.
OVERRIDE PIN INTEGRATED IN THE TUBE, BOOT PROTECTED
Code B
KNOB, TURNING
Code K
HAND LEVER
Code L
Valves with ‘WK’ coils are equipped with the boot for solenoid tube protection.
The lever device is placed on the B side.
113 [4.43]
SECTIONAL DIRECTIONAL CONTROL VALVE
S L S E - Inlet Sections Installation Data
14
SLSE_EN_2026_01
SLSX-B3S-V-1 BASIC INLET SECTION
load sensing port
dimensions in mm [in]
SLSX-B3S-V-1
P1, P2, T1 ports:
3/4” BSP
Ls load sensing port:
1/4” BSP
pressure
gauge port:
1/4” BSP
mounting
surface with
sealing rings:
4 OR 2056
90 shore A
SECTIONAL DIRECTIONAL CONTROL VALVE
S L S E - Inlet Sections Installation Data
15
SLSE_EN_2026_01
INLET SECTIONS WITH COMPENSATOR (BSPP VERSION SHOWN)
mounting
surface with
sealing rings:
4 OR 2056
90 shore A
pressure relief valve
For SLSX-*0 only:
3/4”-16 UNF plug
socket hex adj. screw:
hex key 6.
locking nut: spanner 19
load sensing port
pressure
gauge
port
P, P2 and T ports:
3/4” BSP or
7/8"-14UNF (SAE-10)
T2 and T3 ports:
1/2” BSP or
3/4"-16UNF-2B (SAE-8)
Ls load sensing and
M pressure gauge ports:
1/4” BSP or
9/16-18 UNF (SAE-6).
Not plugged in UNF-threaded
versions
dimensions in mm [in]
SLSX-F0 SLSX-F210
SLSX-F315
SLSX-V210
SLSX-V315
SECTIONAL DIRECTIONAL CONTROL VALVE
S L S E - Outlet Sections Installation Data
16
SLSE_EN_2026_01
SLSX-B1-04S
dimensions in mm [in]
mounting surface
with no sealing rings
90 shore A
M8-6H for eyebolt
Ls load sensing port:
1/4” BSP
Load sensing
port
Ls1
SLSX-B1-04S-V-1 OUTLET SECTION
SECTIONAL DIRECTIONAL CONTROL VALVE
S L S E - Assembled Valve Installation Data
17
SLSE_EN_2026_01
dimensions in mm [in]
(NOTE)
M8-6H for eyebolt
assembly studs
lever override
(code L)
pressure relief
valve
fixing holes
Sectional
valves
Code
2 3404150010
3 3404150011
4 3404150012
5 3404150013
6 3404150014
7 3404150015
8 3404150016
ASSEMBLY KIT
The assembly kit includes
no. 3 studs,
no. 3 self locking nuts
no. 3 washers
All parts zinc-coated.
Please use these codes to
order the kit:
Sectional
valves
A
(NOTE)
B
2 212 132,5
3 262 182,5
4 312 232,5
5 362 282,5
6 412 332,5
7 462 382,5
8 512 432,5
NOTE: for the SLSX-B3S-V-1,
this dimension is 10 mm
shorter.
Tightening torque: 25 Nm
SECTIONAL DIRECTIONAL CONTROL VALVE
S L S E - Circuit examples
18
SLSE_EN_2026_01
CIRCUIT EXAMPLES
SLSE sectional assembly with pressure relief valve for variable displacement pumps.
Two SLSE sectional valve assemblies connected in parallel for the pump line and in series for the LS (Load Sensing) line.
INSTALLATION
These valves can be installed in any position without impairing
correct operation.
Ensure that there is no air in the hydraulic circuit.
SECTIONAL DIRECTIONAL CONTROL VALVE
S L S E - Installation Data
19
SLSE_EN_2026_01
IP RATING TIPS
The technical reference standard for IP rating is IEC 60529, which classifies and defines the degree of protection provided by
equipment and electrical enclosures against intrusion.
The first digit (6) concerns the protection against solid particles (body parts to dust).
The second digit refers to protection against water ingress. It indicates three different types of atmospheric agents from which
protection is provided:
Values from 1 to 6 protection against splashing water and water jets.
Values 7 and 8 protection against immersion.
Value 9 protection against high-pressure and high-temperature water jets.
Important: protection levels against water are based on different test conditions and are not always cumulative.
This means IP66 covers all lower levels within the same test category. IP68 includes IP67 but not IP66 or lower. IP69 does not
include any of the previous levels. If a device meets multiple protection levels, both must be listed, separated by a slash (e.g.
equipment rated for both temporary immersion and water jets: IP66/IP68).
Hydreco Hydraulics - Version Control Number: SLSE_EN_2026_01
AUSTRALIA
AUSTRALIA
INDIA
HydrecoHydraulics Pty Ltd, Regents Park (NSW)
HydrecoHydraulics Pty Ltd,Welshpool(WA)
HydrecoHydraulicsIndia Private Ltd, Bangalore
+61 2 9838 6800
+618 9377 2211
+91 80 645 36200
sales-au@hydreco.com
reception-wa@hydreco.com
sales-in@hydreco.com
APAC
EMEA
GERMANY
ITALY
ITALY
ITALY
NORWAY
UK
Hydreco Hydraulics GmbH, Helmstedt (NI)
Hydreco HydraulicsItalia Srl, Vignola (MO)
Hydreco Hydraulics Italia Srl, Parma (PR)
Hydreco Srl, San Cesario S/P (MO)
Hydreco HydraulicsNorway AS, Nittedal
Hydreco HydraulicsLtd, Poole, Dorset
+49 5351 55860
+39 059 770 0411
+39 0521 183 0520
+39 059 330 091
+47 22 90 94 10
+44 (0) 1202 627500
info@hydreco.de
sales-it@hydreco.com
sales-it@hydreco.com
cylinders@hydreco.com
post-no@hydreco.com
info-uk@hydreco.com
AMERICAS
NORTH/LATIN
HydrecoInc / Continental Hydraulics Inc, Shakopee (MN)
+1952 895 6400 sales@conthyd.com
Supported by a world w i d e network
CONTACT INFORMATION
hydreco-hydraulics
www.h y d r eco.com
