Directional Control Valve HDS24

Proportional Flow Sharing

Reference: 200-P-991240-EN-01
Issue: 03.2017 1/46
Contents Page

1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Directional valve installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.4 Hydraulic fluid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Filtration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.6 Directives and standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.7 Technical specification: . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2 Inlet covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.1 Standard, for fixed/LS pumps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
2.2 PT type - System with LS pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

3 Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.1 Standard body arrangements KLS/KCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.2 Element hydraulic schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

4 Spools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.1 Spools metering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

5 Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.1 LS signal adjustable relief valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.2 Adjustable relief valve on P port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.3 Pressure reducing valve VRP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6 Valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.1 Anti-shock and anti-cavitation valves UC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.2 Anti-cavitation valves C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.3 LS signal normally open unloading valve with manual override (SPFE-TFO) . . . . . . . . . . . 20
6.4 LS signal normally open unloading valve without manual override (SPF-TFO) . . . . . . . . . 20
6.5 LS signal normally closed unloading valve without manual override (SPF-TC) . . . . . . . . . 21
6.6 LS signal normally closed unloading valve with manual override (SPE-TC) . . . . . . . . . . . . 21
6.7 Coils for ON-OFF unloading solenoid valves and loking system positioners . . . . . . . . . . . . 22
6.8 LS signal flow compensated drain valve (VRC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.9 VRC plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
6.10 Proportional pressure reducing valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

7 Levers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.1 Standard lever group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.2 Free end spool with dust proof seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.3 Standard joystick control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
7.4 Joystick control with integrated locking system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

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8 Positioners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8.1 Spring return to neutral position . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
8.2 Detent in floating position 4 and spring return to neutral from position 1 and 2 . . . . . . . . . . 28
8.3 Electro-magnetic detent (EMD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
8.4 Electromagnetic ON-OFF control - Push-Push direct acting type . . . . . . . . . . . . . . . . . . . . . 30
8.5 Coils for ON-OFF elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
8.6 Microswitch positioners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
8.7 Electro-mechanical locking system (normally locked) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
8.8 Hydraulic controls (HP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
8.9 Hydraulic control + floating position with step . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
8.10 Hydraulic control + floating position without step . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
8.11 Electro-hydraulic proportional control with lever option (EHM) . . . . . . . . . . . . . . . . . . . . . . . 37
8.12 Electro-hydraulic open loop proportional control (EHO) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
8.13 Stepper motor electronic control (ESM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
8.14 Spool position transducer / Hall effect sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

9 End covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
9.1 End cover plate with tank line port (PH and PM series) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

10 Suitable applications (Examples) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

10.1 Wheel loaders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10.2 Telehandlers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10.3 Forestry cranes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
10.4 Product identification plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

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1 General information
1.1 Introduction
The commitment of machine manufacturers, to comply with The flexible and versatile construction with a wide range of
the global guidelines of energy saving and functional safety, inlet and outlet covers as well as of controls, gives the de­
is increased considerably, in recent years, forcing the entire signer a high degree of freedom in the choice of the valve
production chain to a big effort in order to follow technologi­ configuration and of the hydraulic circuit which fits in the
cal innovation trend. best way the machine requirements.
In this context, the consolidated leadership and extensive Each valve section can be equipped with a load holding
know-how in telescopic loaders, material handling and valve as well as flow sharing or priority pressure compen­
earth moving applications, the deep experience in the field, sators, whose stability and smooth behaviour grant high
the powerful capacity to develop innovative solutions and levels of system controllability.
the strong commitment to anticipate the upcoming technical The wide range of controls, combined with innovative solu­
and application needs of our customers, have guided tions and compact dimensions, makes HDS24 a powerful
Bucher Hydraulics in the development of the new flow-shar­ and flexible product able to fulfil all the requirements of mod­
ing size 12 directional valve HDS24. ern machines.

Telehandlers Wheel Loaders

Forestry Cranes Excavators

1.2 Directional valve installation

For the installation of the directional control valve it is im­ - during assembly and servicing operations, it is neces­
portant to consider the following recommendations: sary to adopt clean procedures and work in an environment
- the valve can be assembled in any position but, in order free of chips, swarf, dust and other possible source of pollu­
to avoid deformations and spool sticking, the surface on tion;
which the product is mounted has to be flat; - if the spools are connected to the machine controls
- before cabling pipelines, make sure that the pipeline through additional linkages, make sure that they do not af­
hollows as well as fittings and seals are thoroughly clean; fect their proper operation;
check also that the work ports are protected until the con­ - before painting the valve, check that the work port
nection of the pipelines plastic plugs are tightly in place.

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1.3 Fittings
In the interest of safety, only fittings with STRAIGHT Our warranty conditions will not be valid in case tapered
THREAD ENDS should be used (e.g. DIN3852). fittings are used.
Fittings with TAPERED THREAD ENDS (e.g. DIN 3852 The work port adaptors have to be fastened respecting the
form C) must never be used, as they can cause deformation tightening torque values indicated in the following table (for
and cracks in the valve body. different port types contact our Sales Dept.):

Recommended tightening torque for work port fittings - Nm / lbft

Metric - ISO 261 M14X1.5 M18X1.5 M22X1.5 M27X2
With O-Ring seal
30 / 22.1 40 / 29.5 60 / 44.3 90 / 66.4
(ISO 6149-1)
With copper washer
30 / 22.1 40 / 29.5 60 / 44.3 90 / 66.4
(ISO 9974-1)
With rubber washer
25 / 18.4 35 / 25.8 60 / 44.3 70 / 51.7
or steel (ISO 9974-1)
BSP - ISO 228-1 1/4” BSP 3/8” BSP 1/2” BSP 3/4” BSP
With copper washer
30 / 22.1 40 / 29.5 60 / 44.3 90 / 66.4
(ISO 1179-1)
With rubber washer
25 / 18.4 35 / 25.8 60 / 44.3 70 / 51.7
or steel (ISO 1179-1)
UN-UNF - ISO 263 SAE6 - 9/16-18 UNF SAE8 - 3/4-16 UNF SAE10 - 7/8-14UNF SAE12 - 1-1/16-12UNF
With O-Ring seal
30 / 22.1 40 / 29.5 60 / 44.3 90 / 66.4
(ISO 11926-1)

For metric threads availability please contact our Sales Department

IMPORTANT!: Tightening torques depends on several different factors including lubrication, coating and surfaces
finish. The fitting manufacturer shall be consulted.

1.4 Hydraulic fluid

The main function of the fluid used in hydraulic systems is Bucher Hydraulics recommends to use a mineral based oil
to transfer energy but it performs also other important responding to ISO 6743/4 requirements, only.
functions: protect the components from corrosion, lubricate The system should be operated only with hydraulic oil
the directional valve sliding parts, remove particles and heat containing anti-foaming and antioxidant additives.
from the system.
Before using other types of fluid, please contact our
In order to ensure proper operation and long life of the sys­ Sales Department, since they can cause serious damage
tem it is important to choose the correct hydraulic fluid with to the directional valve components and jeopardize the cor­
proper additives. rect function of the system.

1.5 Filtration
In order to ensure proper operation and long life of the di­ It is advisable to fit filters with pressure gauge or dirt
rectional valve components it is extremely important to indicator in order to make it possible to verify the filter con­
provide a proper and effective filtration of the hydraulic fluid. dition.
It is advisable to follow filter manufacturers instructions and Particular attention has to be paid to the cleaning of the
recommendations. machine hydraulic circuit and its components before the
The fineness of the filter should be selected in order to first run-in, since the presence of foreign materials could
maintain the fluid contamination level according to the cause damages to the directional valve components even
values listed at section 1.7 (Technical specification) if a proper filtration is provided.
It is advisable to use a pressure filter with by-pass and The filters integrated in the HDS24 are provided to protect
indicator. the valve components against big particles and not to filter
The size of return filters must suit the maximum return flow the system.
whereas the size of pressure filters must suit the maximum
pump flow.

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1.6 Directives and standards
- PED (97/23/EC) - ISO 9001:2015 / ISO 14001:2015
The pressure relief valves assembled into the directional Bucher Hydraulics S.p.A. is certified for research, develop­
control valve can not to be considered and/or confused ment and production of directional control valves, power
with the safety valve when the PED Directive is applied to units, gear pumps and motors, electro pumps, cartridge
the hydraulic system. valves and integrated manifolds for hydraulic applications.
- Atex
Attention: The equipment and protective systems
of this catalogue ARE NOT intended for use in po­
tentially explosive atmospheres. Ref:
Directive 99/92/EC and Directive 2014/34/UE

1.7 Technical specification:

IMPORTANT!: Parameter values and diagrams shown in this catalogue have been measured with mineral oil
having a viscosity of 23 mm2/s at 50° C
Features
Max inlet flow 130 l/min (35 US gpm)
Max inlet pressure (P) 1) 280 bar (4060 PSI)
Max work port pressure (A/B) 1) 320 bar (4640 PSI)
standard 30 bar (430 PSI)
Max back pressure (T) with electro-hydraulic
5 bar (70 PSI) (*)
positioner (EHO)
16 cc/min (**)
without port valves standard
Max internal leakage A/B→T (0.976 Cu In/min)
(at 100 bar/1450 PSI, 23 mm2/s)2) 20 cc/min (**)
with port valves standard
(1.22 Cu In/min)
Fluid mineral based oil (see 1.4 )
Fluid temperature (with NBR seals) -20°C / +80°C (-4° to 176° F)
Max contamination level 20/18/15 ISO 4406:1999 (NAS 1638 class 9)
recommended from 15 to 75 mm2/s
Viscosity operating range
admissible from 12 to 400 mm2/s
Max number of elements 10
with mechanical/hydraulic/
from -30 to +60 °C
Ambient temperature in operating pneumatic controls
conditions: with electric/
from -30 to +50 °C
electrohydraulic devices

Tie-rods tightening torque standard 30 Nm

For different operating conditions, please contact our Sales Dept.
1) Fatigue tested according to internal procedure at 1.16x rated pressure on
6 samples for 1ׄ000ׁ000 cycles.
2) Spool leakage values are strongly influenced by fluid viscosity with a linear
inversed relationship: 10 cc/min at 100 bar and 23 cSt
become roughly 5 cc/min at 100 bar and 46 cSt.
(**) Lower values can be provided on demand
(*) With electro-hydraulic pilot heads the back pressure must not exceed 5
bar. For higher back pressure values the pilot flow must be unloaded to
tank through a separate line ( Tp)

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2 Inlet covers
2.1 Standard, for fixed/LS pumps
65 65
2.56" 2.56"

1.61"
41

M VDM
282.7 60
11.13" 2.36"

EV2/2

120.1
4.73"
2.99"
76

1.69"
43

.98"
25
9
M10 .35"
22 42
0.87" 1.65"

42 27
1.65" 1.06"

22
.87"

1.73"
44

70.5
2.78"
M12x1,75

VDM S10
VDM S08
VDM S08

SPFE-TFO/SPF-TC

T817/2

VDM S10 = P full flow adjustable relief valve.

VDM S08 = Ls signal adjustable relief valve.
SPFE-TFO= Electrovalve normally open with emergency screw.
SPF-TC= Electrovalve normally closed with emergency screw.

2.1.1 Ports Size

Threads P T T1 P1 LS M

BSP 3/4” 3/4” 3/4” 3/4” 1/4” 1/4”

UNF SAE12 SAE12 SAE12 SAE12 SAE6 SAE6

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 VDM S10
(Relief valve on P line)

VDM S08
Unloading compensator (Relief valve on LS signal)

Spring
Compensator plug

VS
( Check /restrictor valve ) To switch from fixed pump to LS pump
configuration the unloading compensator
and its spring have to be replaced by the
SPE (Unloading valve) dummy spool (the external plug does not
change)

Unloading compensator P → T characteristic

24
22
20
18
16
p [bar]

14
12
10
8
6
4
2
0
0 10 20 30 40 50 60 70 80 90 100 110 120 130
Flow [l/min]

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2.1.2 Systems with fixed displacement pump (TF) - Examples
With LS relief valve
With LS relief valve + VS valve
LS2 LS2

Pp Pp

Tp Tp
LS1 Ls LS1 Ls

Hp Hp
P P P P
Pp Pp

Tp Tp
T T T T

T1 P1 T1 P1

With LS relief valve + LS signal With LS relief valve + P relief valve

unloading valve + VS valve + LS signal unloading valve + VS valve
LS2 LS2

Pp Pp

Tp Tp
LS1 Ls LS1 Ls

Hp Hp
P P P P
Pp Pp

Tp Tp
T T T T

T1 P1 T1 P1 M

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2.1.3 Systems with LS pump (TV) - Examples
With LS relief valve
With LS relief valve
+ damping with LS output signal

LS2 LS2

Pp Pp

Tp Tp
LS1 Ls LS1 Ls

Hp Hp
P P P P
Pp Pp

Tp Tp

T T T T

T1 P1 T1 P1

With LS relief valve + damping on LS output With LS relief valve + P relief valve
signal + LS signal unloading valve + damping on LS output signal + LS signal
unloading valve
LS2 LS2

Pp Pp
Tp Tp
LS1 Ls LS1 Ls

Hp Hp
P P P P
Pp Pp

Tp Tp
T T T T

T1 P1 T1 P1 M

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2.2 PT type - System with LS pump
130
5.12" M10
65
2.56"

1.61"
41
EV2/2

202.2 Manual override closed

T
LS P

7.96"
4.61"
117

2.72"
2.72"
69

69
2.11"
53.5

1.18"
1.22"

1.18"
31

30

30
20 4 14
.79" .16" .55"
31 25.8 20
1.22" 1.02" .79"
159 54
6.25" 2.13"
203.3
8"
44
1.73" VDM S08
22 37
.87" 1.46"
.67"
21.5

17
.83"
1.42"
36

2.2.1 Ports Size

Threads P T LS M

BSP 3/4” 3/4” 1/4” 1/4”

UNF SAE12 SAE12 SAE6 SAE6

For further information, please contact our Sales Department.

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2.2.2 PT type - Systems with LS pump - Examples
With damping on LS ouput signal
With damping on LS ouput signal
+ LS relief valve
+ manometric port on P signal (M)
+ Manometric port on P signal (M)
LS2 LS2

Pp Pp
Tp Tp
LS1 LS LS1 LS

Hp Hp
P P P P
Pp Pp

Tp Tp
T T

T M T M

With damping on LS ouput signal With LS flow control

+ LS relief valve + damping on LS ouput signal
+ LS signal unloading valve + LS relief valve
+ Manometric port on P signal (M) + LS signal unloading valve
+ Manometric port on P signal (M)
LS2 LS2

Pp Pp
Tp Tp
LS1 LS LS1 LS

Hp Hp
P P P P
Pp Pp

Tp Tp
T T

T M M
T

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3 Elements
3.1 Standard body arrangements KLS/KCS
“KLS”: with local compensator with check function “KCS” : with local compensator without check function

3.1.1 With service port cavities

Spool axis
119.2
4.69"

4.61"
117

2.66"
67.5

155
6.10"

B 57.5 57.5 A
2.26" 2.26"
28 28
1.10" 1.10"
.83"
21

1.65"
42

Lever interface Electro-hydraulic Stepper-motor

“MAN” interface “EH” interface “ST”

3.1.2 Without service port cavities

Spool axis
119.2
4.69"

4.61"
117

67.5
2.66"

155
6.10"

B A
28 28
1.10" 1.10"
21
.83"

1.65"
42

Lever interface Electro-hydraulic Stepper-motor

“MAN” interface “EH” interface “ST”

3.1.3 Ports size

Threads Standard A/B

BSP 1/2”

UNF SAE10

Metric M22X1.5

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3.2 Element hydraulic schemes
KCS KLS

Local compensator Local compensator

+ check function

Pp Pp
Tp Tp
Ls Ls

Hp Hp

P P

Pp Pp

Tp Tp

T T

B A B A

Local compensator + Local compensator

service port valves + check function
+ service port valves

Pp Pp
Tp Tp
Ls Ls

Hp Hp
P
P
Pp
Pp
Tp
Tp
T
T

B A
B A

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4 Spools

A 40 60 S R Ref Nominal Flow

(13 bar margin)
Type of Specific
circuit design** 10 10 l/min
Application*
Flow to port “A” 20 20 l/min
i.e.: 40 = 40 l/min Flow to port “B”
i.e.: 60 = 60 l/min 30 30 l/min

Example of symmetric spool: A1010S 40 40 l/min

Example of not symmetric spool: A1080S
* S = standard overlap 60 60 l/min
** R = linear metering with soft start for rotation
Note: contact our Sales Dept. for asymmetrical spool available combinations 80 80 l/min

C0 100 l/min

MAN spool version EH spool version ST spool version

Specific design for Specific design for hydraulic Specific design for
manual controls and electro-hydraulic controls stepper-motor controls

Spool Type Hydraulic schematic Features

1 0 2
AB

A A/B ports closed to tank

P T

1 0 2
AB

C A/B ports connected to tank - Motor spool

T
P
1 0 2
AB
B port connected to tank
D
A port closed
P T

1 0 2
AB
A port connected to tank
L
B port closed
P T
1 0 2 4
AB

W
Ô Ô Floating position pushing the spool

Ô P
1 0
A
2
Ô
T

S Single effect
P T

1 0 2
B

G Single effect
P T

200-P-991240-EN-01/03.2017 15/46
HDS24
4.1 Spools metering
Not symmetric spools example
20 70

A2070S

(*) (*)

B A B A

70 20 20 70
S24KCSA100FA2070**** S24KCSA100FA7020****

(*) Independently by lever spool position, “B” port remains always

in the same side (the body is printed)

Note: contact our Sales Dept. for asymmetrical spool available combinations

16/46 200-P-991240-EN-01/03.2017
HDS24
5 Valves
5.1 LS signal adjustable relief valve
P
+3
42 -2 Nm

24

+3
T1
27 -2 Nm
T
19

VMD S08

41.3 max
1.62" LS
+0.5
Ø 28.25 0
+0.2 Pressure setting
Ø 25.7 0 Type Code
+0.1 range bar (PSI)
Ø 20.6 0
 Ø 0.08 I
40- 200 VMD S08
3/4”16-UNF-2B (SAE8) ↗ 0.1 I
(580 - 5080) T.20
200533930168
Ø 0.05 G
0.5 ±0.04

15° I 201- 350 VMD S08

+0.3

200533930167
2.6 0

G (2910 - 5080) T.35

1.6
Lunghezza tratto alesato12.7 H8 +0.027

1.6
0

45°
18.6 ±0.05
20.6 ±0.05

+1
12 0
29.5 -0.05
0

1.6

1.6

30°
+0.027
Ø 12.7 H8 0

5.2 Adjustable relief valve on P port

40.80 +3
27 -2 T
1.61"
19
P

24

+3 T
60 -2 VMD S10

P
+0.2
Ø 30 0
 Ø0.08 N +0.1 Pressure setting
Ø24 0 Type Code
↗ 0.1 N range bar (PSI)
7/8-14 UNF-2B (SAE10) Ø0.05 M
15°
N 221 - 350
1.6

VMD S10 -
(3200 - 5080)
400
+0.3
+1
15 0

45° 360
2.6

25.5
24

30° 320
Pressure (bar)
34

120° 280
1.6

1.6
240
+0.027
1.6

Ø15.87 H8 0 120°
 Ø0.05 N 200
160
120
80
40
Flow
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 (l/min)

For further information, please contact our Sales Department.

200-P-991240-EN-01/03.2017 17/46
HDS24
 5.3 Pressure reducing valve VRP
+5
45 0 Nm 22
 Ø 0.08 C
Filter
Ø 0.05 B

 Ø 0.08 C

Pp +1
12 0
 Ø 0.08 C

+0.05
Ø 14.3 0
3/4”UNF-2B(SAE8)
+0.1

+0.05
T P

+0.2

140°
Ø20.6 0
Ø 26 0

Ø15.9 0

140°
23
.91" 1.6 1.6
1.6

30°
1.6

2.5 ±0.2 +0.3

17.3 0
Pp P +0.3
31.5 0
+0.5
42 0
T

Nominal
Type Code
pressure ( bar)

VALV VRP08-T32-F 200533930174 32

Pressure Vs. Flow Curve P → Pp (Fully open) Pressure Vs. Flow Curve P → Pp (Reducing)
10 40
9 36
8 32
7 28
p [bar]
p [bar]

6 24
5 20
4 16
3 12

2 8
1 4
0 0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Flow [l/min] Flow [l/min]

Pressure Vs. Flow Curve Pp → T (Relieving)

55
50
45
40

35
p [bar]

30

25
20
15

10
5
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Flow [l/min]

(See back cover section).

18/46 200-P-991240-EN-01/03.2017
HDS24
6 Valves
6.1 Anti-shock and anti-cavitation valves UC
6.1.1 Fixed setting

Pressure setting at 10 l/min (*)

13
UC Code
35±10% Nm
bar (psi)
.31"
8

50 (720) 200533930240
80 (1160) 200533930370
100 (1450) 200533930250
120 (1740) 200533930260
150 (2170) 200533930270
160 (2320) 200533930380
170 (2460) 200533930280
8 180 (2610) 200533930460
.31"
190 (2750) 200533930290
M18

T 200 (2900) 200533930300

A/B 210 (3040) 200533930310
230 (3330) 200533930320
Antishock
320 bar
240 (3480) 200533930390
350
300 260 bar 250 (3620) 200533930330
250
Pressure [bar]

210 bar 260 (3770) 200533930400

200
150 bar 270 (3910) 200533930410
150
100 80 bar 280 (4060) 200533930340
50 320 (4640) 200533930350
0
10 20 30 40 50 60 70 80 350 (5070) 200533930360
Flow [l/min] VC (plug) 200778400410
Anticavitation (*) For different pressure settings please contact our Sales Department
40
35
30 IMPORTANT!: The UC anti-shock valve is de­
25 signed to absorb shock effects.
Pressure [bar]

20 Therefore, it should not be used as pressure relief

15
valve
10
5
0
0 10 20 30 40 50 60 70 80 90 100
Flow [l/min]

6.2 Anti-cavitation valves C

Type Code
8
.31” C 200533940088

20
18
T
A/B 16
Pressure [bar]

35±10% Nm 14
A/B 12
13
10
8
T 6
4
2
0
0 10 20 30 40 50 60 70 80 90 100
Flow [l/min]

200-P-991240-EN-01/03.2017 19/46
HDS24
6.3 LS signal normally open unloading valve with manual override (SPFE-TFO)

38±10% Nm 24

 Ø0.08 Q
↗ Ø0.1 Q

Ø0.05 B

 Ø0.05 Q
LS

+0.5
Ø28.25 0

+0.1
+0.2
Manual

45~
T

Ø20.6 0
Ø25.7 0
override
(Screw to
84.2 close)

Ø12.7 H8 ( +0.027 )
3.32"

0
3/4”16-UNF-2B(SAE8)
Q
0.5 ±0.04
+0.3
2.6 0
T LS +1
12 0
18.6 ±0.05
20.6 ±0.05
0
B 29.5 -0.05

Mechanical part only Solenoid

200542300028 See 6.7

6.4 LS signal normally open unloading valve without manual override (SPF-TFO)

38±10%Nm 24

 Ø0.08 Q
↗ Ø0.1 Q

Ø0.05 B

 Ø 0.05 Q
LS
+0.5
Ø28.25 0

+0.1
+0.2

T
45~
Ø20.6 0
Ø25.7 0

62.7
2.47"
Ø12.7 H8 ( +0.027 )
0
3/4”16-UNF-2B(SAE8)

Q
0.5 ±0.04
T LS +0.3
2.6 0
+1
12 0
18.6 ±0.05
20.6 ±0.05
0
B 29.5 -0.05

Mechanical part only Solenoid

200542300026 See 6.7

For further information, please contact our Sales Department.

20/46 200-P-991240-EN-01/03.2017
HDS24
6.5 LS signal normally closed unloading valve without manual override (SPF-TC)

38±10% Nm 24

 Ø0.08 Q
↗ Ø0.1 Q

Ø0.05 B

 Ø0.05 Q
LS

+0.5
Ø28.25 0

+0.1
+0.2

45~
T

Ø20.6 0
Ø25.7 0
58.8
2.31"

Ø12.7 H8 ( +0.027 )
0
3/4”16-UNF-2B(SAE8)
Q
Prid 0.5 ±0.04
Pp T LS +0.3
2.6 0
+1
12 0
18.6 ±0.05
T
20.6 ±0.05
0
B 29.5 -0.05

Mechanical part only Solenoid

200542300021 See 6.7

6.6 LS signal normally closed unloading valve with manual override (SPE-TC)

38±10% Nm 24

 Ø0.08 Q
↗ Ø0.1 Q

⊥ Ø0.05 B

 Ø0.05 Q
LS

Manual
+0.5
Ø28.25 0

+0.1

override
+0.2

45~

T
Ø20.6 0
Ø25.7 0

71.5 (Unscrew
2.81" to open)
Ø12.7 H8 ( +0.027 )
0
3/4”16-UNF-2B(SAE8)

Q
Prid 0.5 ±0.04
Pp +0.3
T LS 2.6 0
+1
12 0
18.6 ±0.05
T
20.6 ±0.05
0
B 29.5 -0.05

Mechanical part only Solenoid Code

200542300022 See 6.7

For further information, please contact our Sales Department.

200-P-991240-EN-01/03.2017 21/46
HDS24
6.7 Coils for ON-OFF unloading solenoid valves and loking system positioners
DIN connector AMP connector
13
.51"

.51"
13
24.5
.96"

2.05"
52
23.5
.92"

.92"
23.5
36 38.5
21.5
.85"

1.42" 22.5 16.5 36

1.51" .89" .65" 1.42"

16.5

19.5
.65"

.77"
3 1 2
.12"
1 2
11.5
.42"

Available with Diode arrangement*

Diode

DT connector
28 For solenoid valve series
19
1.10"
8 1.34" Wire class H (VDE0580)
16.3

.31"
.64"

Protection IP65 (DIN40050)

.35"
9

Coil insulation F
2.05"
1.69"

52

Duty rating ED 100%

43

23.5
.93"

Voltage tolerance ± 10%

22.5 16.5 18
.89" .65" 36 .71"
13 1.42"
.51"
20.4
.80"

16.7
.66"
1 2

Connector Nominal Power Resistance (Ohm) Current (Ampere)

style Coil voltage (Watt) Coil code
Ambient temp. Ambient temp.
12 V. DC. 27.2 5.3 2.2 200674910100
DIN
24 V. DC. 27 21.3 1.12 200674920080
12 V. DC. 27.2 5.3 2.2 200674910250
AMP
24 V. DC. 27 21.3 1.12 200674920200
AMP + 12 V. DC. 21 6.85 1.75 200541210032
DIODE* 24 V. DC. 21 27 0.78 200541220033
12 V. DC. 27 5.3 2.2 200674910370
DT
24 V. DC. 27.2 21.3 1.12 200674920290

22/46 200-P-991240-EN-01/03.2017
HDS24
6.7.1 Connector for DIN type solenoids
Code 200544110009
For power input D.C.

1 Connector type DIN 43650

Number of poles 2+

Supply voltage max. 220 V.

Nom. capacity at contacts 10 A.

Max capacity at contacts 16 A.

2
2
Resistance at contacts . 4 mOhm

1 Max section of cable 1.5 mm2

27.5 (1.08”)

Outer material
Glass fibre
reinforced Nylon
Contact mount material

Color Black

Armour clamp Pg 9
42.5 (1.67”)
Ø cable 6-8 mm.
29 (1.14”)

Protection factor IP65 (DIN40050)

Insulation class C (VDE0110)

Temperature range -40 / +90 _C

6.8 LS signal flow compensated drain valve (VRC)

Type Code
VALV VRC D. 0,5 (STD) 200787202320
VALV VRC D. 0,7 200787202102
8
(See end cover section).
35±10% Nm
LS
LS

T
9
.35” T

6.9 VRC plug

Type Code
8
PLUG 200778300360
35±10% Nm
(See end cover section).
LS

9 T
.35”

200-P-991240-EN-01/03.2017 23/46
HDS24
6.10 Proportional pressure reducing valve
Ø 29.3 Ø21.1±0.1
1.15" DIA
Ø15±0.15
Ø 0.06 C

Ø12.1±0.05
Ø 0.02 C
Ø11.1 H8 (+0.027
0 )
Ø 0.02 C
2.62"

Ø 0.08 D
66.5

4.5±0.1
D
1.67"
42.5

45°
2.5
3.74"
95

.1"

11.3±0.1
+0.2
Tp

23.2±0.1
+0.1

30.2 0
1.12"
28.5

0.25 0 x45°
Pp 20°

U
Ø 9.1 150°
Ø 4.5
.18" DIA

.36"DIA

U
1.17"
29.6

20°

Pp Tp Ø9.1H8 (+0.022
0 )
40.2 Ø0.08 D C
1.58"
49
1.93"
40 40

35 35

30 30
control pressure [bar]

12 V 24 V
control pressure [bar]

25 25
25 bar setting 25 bar setting
20 20

15 15

10 10

5 5

0 0
0 200 400 600 800 1000 1200 1400 1600 0 100 200 300 400 500 600 700 800

current [mA] current [mA]

Ectro-hydraulic specifications 12 V 24 V
Nominal flow rate 4 l/min (1 GPM)
Max inlet pressure 50 bar (725 psi)
Rated supply voltage 12 VDC 24 VDC
Current supply characteristic PWM (Pulse width modul.)
Maximal current 1500±10 mA 750±10 mA
Superimposed dither frequency 100 Hz
Degree of protection AMP IP65 Deutsch IP69K
Pp filter screen 125 μm
Coil resistance 4.7 Ohm ±5% 20.8 Ohm ±5%
Response time < 50 ms
Leakage from Pp to Tp < 30 cc/min. at 35 bar and 50°C (< 0.9 cu:in./min. at 500 psi and 176 °F)
Duty cycle ED 100%
Connector Type AMP Junior timer (AMP84-9419) / DEUTSCH DT04-2P
Connector colour MOSSY-GREY BLACK
200533960015 (DEUTSCH) 200533960013 (DEUTSCH)
Code - 25 bar setting (*) (**)
200533960016 (AMP) 200533960014 (AMP)
(*) nr. 2 screws M4x12 are not included
(**) For available different setting please contact our Sales Dept.

24/46 200-P-991240-EN-01/03.2017
HDS24
7 Levers
7.1 Standard lever group
Code: 200707120570

L100 L300
3 4
1 2 M10 2 0 1
3 - 4 floating stroke
1 - 2 standard stroke

M10

3.14”
79.8
67.8
2.67”
.98”
25

10±10% Nm

3.14”
79.8
37
1.46”
64
2.52”

Lo
Code Body Interface Spool type
mm Type
inches
190 7.48 AL001 200702220010
Lo

255 10.04 AL002 200702220030

300 11.81 AL003 200702220040

350 13.78 AL004 200702220050 MAN MAN

M10X1.5

7.2 Free end spool with dust proof seal

Code: 200707190030
L55 2 0 1

10±10% Nm

9
.35”

37
1.46”

200-P-991240-EN-01/03.2017 25/46
HDS24
7.3 Standard joystick control

B2
10±10% Nm
B1

Body Interface Spool type

18±10% Nm pivot

L133
Pivot
MAN MAN
A1
1 2
A2-A1 A1-B2 M12x1.75
threaded hole

A2 B2

A2-B1 B1-B2

B1
92.5
3.64”

Pivot L134
1 2
B2
M12x1.75
B2-B1 B2-A1 threaded hole

B1 A1

A2-B1 A2-A1

A2
92.5
3.64”

AL010
Code: 200702230040
M12x1.75

Lo=250

26/46 200-P-991240-EN-01/03.2017
HDS24
7.4 Joystick control with integrated locking system

10±10% Nm
pivot B2
5
B1

Body Interface Spool type

13 18±10% Nm

MAN MAN

Pivot L260
PORT SIDE
A1

Unlocked

M12x1.75
M12x1.75
Locked

A2 B2

B1

min 123 max 139

min 4.84" max. 5.47"

Pivot L460

B2
M12x1.75

B1 A1

A2
max 139
max. 5.47"

200-P-991240-EN-01/03.2017 27/46
HDS24
8 Positioners
8.1 Spring return to neutral position
5 SPRING FORCE-STROKE DIAGRAM
10±10% Nm
1 0 2
320
39
1.54”
280

240 56

200

Force [N]
275
160

120 79

6 80 349
12.5±10% Nm
40

0 5 7 7,5
0 1 2 3 4 6
Stroke [mm]
Type Code Colour
Body Interface Spool type
349 200768611811 RED

79 - BLACK

56 200768610861 YELLOW

275 200768611331 WHITE MAN MAN

8.2 Detent in floating position 4 and spring return to neutral from position 1 and 2
Floating position 5
pushing the spool
10±10% Nm 1 0 2 4
(W type)
76.8
3.02”

Body Interface Spool type

12.5±10% Nm
6
MAN MAN

Detent
Type Code Main spring
spring

06 - RED BLACK

For further information, please contact our Sales Department.

28/46 200-P-991240-EN-01/03.2017
HDS24
8.3 Electro-magnetic detent (EMD)
A pre-feeling (force increase) signals the operator that the
detent position is going to be engaged

Detent in Detent in
position 1 1 0 2 position 2 1 0 2

12.5±10% Nm

10±10% Nm
5

10±10% Nm

12.5±10% Nm
10±10% Nm
8

6 119 90.
4.69” 3.54”
125 96
4.92”
DETENT DETENT
3.78”

8.3.1 Operating features

COIL Body Interface Spool type
Nominal voltage: 12 VDC ± 10%
Power rating: 7 W
Electrical resistance when holding (20°C): 21 ± 1.5 Ohm:
Min. solenoid axial hold force: 260 N
Duty cycle: 100% MAN MAN
Standard cable length: 500 mm

Min. holding
Spring Detent
Type Code Voltage force (detent Connector
positioner position
position)

DEUTSCH
336 - RED 12 VDC 137 N 2
DT06-2S

DEUTSCH
363 - RED 12 VDC 137 N 1
DT06-2S

200-P-991240-EN-01/03.2017 29/46
HDS24
8.4 Electromagnetic ON-OFF control - Push-Push direct acting type
5
10±10% Nm

Body Interface

Pin for Pin for

manual manual
override override

MAN
107.8 107.8
4.24" 4.24"

Double acting Single acting port “B” Single acting port “A”

1 0 2 0 2 1 0

Double acting Single acting port “B” Single acting port “A”

Type Code Voltage Connector Type Code Voltage Connector Type Code Voltage Connector

500 - 12 V.DC. 500G - 12 V.DC. 500S - 12 V.DC.

AMP AMP AMP
501 - 24 V.DC. 501G - 24 V.DC. 501S - 24 V.DC.

502 - 12 V.DC. 502G - 12 V.DC. 502S - 12 V.DC.

DE DE DE
503 - 24 V.DC. 503G - 24 V.DC. 503S - 24 V.DC.

504 - 12 V.DC. 504G - 12 V.DC. 504S - 12 V.DC.

HC HC HC
505 - 24 V.DC. 505G - 24 V.DC. 505S - 24 V.DC.

For coils see section 8.5.

For further information, please contact our Sales Department.

30/46 200-P-991240-EN-01/03.2017
HDS24
8.5 Coils for ON-OFF elements
DIN connector DT 04 connector

17.9
1.18" .70"

1.96"
1.18"

49.8
30

30
19.8
.78"

67
Ø39.5
2.64" Ø39.5 52.5
1.57" DIA
1.57" DIA 2.07"
67
2.64"

1 2 1 2

AMP JPT connector

Solenoid main features
Wire class H (VDE0580)
1.71"

Duty rating ED 100%

43.5
1.18"
30

Voltage tolerance ± 10%

Fe/ZnNi5/Cn/T0
19.8
.78"

Magnetic frame protection

(DIN 50979)
Ø39.5 49.4
1.56"DIA 1.94"
67
2.64"

1 2

Nominal Coil Power Current consumption Resistance at

Connector style IP Code
voltage (VDC) (Watt) at 20° C (A) 20° C (Ohm)

200674910430 12 29 2.35 5.1

DIN 65
200674920320 24 25 1.12 21.5

200674910450 12 29 2.35 5.1

AMP 65
200674920340 24 25 1.12 21.5

200674910440 12 29 2.35 5.1

DT 67
200674920330 24 25 1.12 21.5

200-P-991240-EN-01/03.2017 31/46
HDS24
8.6 Microswitch positioners
8.6.1 Spool movement detection Body Interface Spool type

1 0 2

22
MAN MAN
12.5±10% Nm
DE: microswitch operated in both directions

16
12.5±10% Nm
SE1: microswitch operated in POS.1

12.5±10% Nm SE2: microswitch operated in POS.2

10±10% Nm

39
1.54"
87
3.43"

8.6.2 Spool directions detection (Redundant signal)

1 0 2

22

12.5±10% Nm

16
Microswitch control
12.5±10% Nm
Current rating .01 - 5.0 DC Amp

Voltage rating 5.0 - 24.0 VD C

6
Mechanical life 500.000 cycles
12.5±10% Nm

5
Temperature range -30 to 120° C

10±10% Nm The normally closed version is available too.

39
1.54"
122
4.80"
Switch Hydraulic
Code Description Connector
type scheme

SAE6 Normally Closed, Encapsu­ Packard

200544124021
C21-478 lated with Wire Leads Weather Pack

SAE6 Normally Open, Encapsulated Packard

200544124022
O21-477 with Wire Leads Weather Pack

Normally Open, Encapsulated

SAE6 Packard
200544124023 with Wire Leads, Convoluted
O21-467 Metri­pack
nylon wire shield

SAE6 Normally Closed, Sealed Packard

200544124027
C21-462 Terminals Weather Pack

For further information, please contact our Sales Department.

32/46 200-P-991240-EN-01/03.2017
HDS24
8.7 Electro-mechanical locking system (normally locked)
With manual override Without manual override

38±10% Nm 24 38±10% Nm 24
128.5
5.06"

4.11"
104.5
5 5

10±10% Nm 10±10% Nm

6 6

12.5±10% Nm 48 12.5±10% Nm 48
1.89" 1.89"
5 87 5 87
3.43" 12.5±10% Nm 3.43"
12.5±10% Nm

Positioner
Type Code Manual override
spring

369 - WHITE Y

368 - WHITE N

For coils see 6.7

For different types of springs see section 8.1

Body Interface Spool type

MAN MAN

200-P-991240-EN-01/03.2017 33/46
HDS24
8.8 Hydraulic controls (HP)
Pmax= 40 bar (580 PSI)

8.8.1 Standard HP positioner

POS50-60

std lever side B A 1 0 2

1/4” BSP 1/4” BSP

POS52-62

63.5 63.5
2.5" 2.5"
12.5±10% Nm 12.5±10% Nm

6 5

Type Code Spring type

50-52 200768650770 5
60-62 200768650780 6
For SAE6 ports positioner please contact our Sales Department

8.8.2 HP positioner + air bleeding plugs

POS57-67
1 0 2
B A
1/4"BSP 1/4"BSP

POS58-68

M10x1 M10x1
63.5 63.5
2.5" 2.5"
12.5±10% Nm 12.5±10% Nm

6 5

Type Code Spring type

57-58 200768650860 5
67-68 200768650870 6
For SAE6 ports positioner please contact our Sales Department

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8.8.3 HP positioner + stroke limiters
POS50A-60A
1 0 2
B A
1/4” BSP 1/4” BSP

POS52A-62A

100.25 100.25
.3.95" .3.95"

Type Code Spring

50A-52A 200768650830 5
60A-62A 200768650810 6
For SAE6 ports positioner please contact our Sales Department.

8.8.4 HP positioner - spring characteristic curves

Spring type 5 Spring type 6
30 30
25
Pilot pressure [bar]

Pilot pressure [bar]

25 24,3
20 20
18.4
15 15
10
10
5
3.9 5
4
0
0
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8
Stroke [mm]
Std overlap Stroke [mm]
The metering area depends on the type of spool (see metering curves 4.1)

Body Interface Spool type

MAN EH (Standard) - MAN (Admitted)

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8.9 Hydraulic control + floating position with step
Pmax= 40 bar (580 PSI)
POS53

std lever side

POS51
6
5

12.5±10% Nm 12.5±10% Nm
B A
1/4” BSP 1/4” BSP

4 2 0 1
63.5 99
2.5" 3.90"

35
Type Code
30
51-53 200768650820
Pilot pressure [bar]

25 24,9
For SAE6 ports positioner please contact our Sales Department
21,5
20
18,4
Body Interface Spool type 15

10

5 3,9
0
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12
Stroke [mm]
MAN EH (Standard) - MAN (Admitted) Std overlap

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8.10 Hydraulic control + floating position without step
Pmax= 40 bar (580 PSI)
std lever side
6 POS55
5
POS54 12.5±10% Nm
12.5±10% Nm
B A
1/4”BSP 1/4”BSP

63.5 63.5
2.5" 2.5" 4 2 0 1

Spring characteristic curve

Type Code 30
Pilot pressure [bar]

25
54-55 200768650790 22.3
20 18,4
16,3
15
Body Interface Spool type 10
5 3.9
0
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12
Stroke [mm]
Std overlap

MAN EH

8.11 Electro-hydraulic proportional control with lever option (EHM)

Pmax= 30 bar (435 PSI)

Voltage Type Code

12/24 V.DC EHM 330B -

Spool type
Tp Tp
Pp Pp
Coils not included

MAN
For sensor see section 8.14
(not included)
136.5
5.37"

127.5
A special body is requested
5.02"

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8.12 Electro-hydraulic open loop proportional control (EHO)
8.12.1 Standard electro-hydraulic open loop proportional control

Tp Simplified scheme
Pp

Tp Pp 2 0 1 Pp
Pp
Tp Tp

Body Interface Spool type

EH EH (Standard) - MAN (Admitted)

see 4±10% Nm
6.10
3

108.5
4.27"

12.5±10% Nm
12.5±10% Nm
6
5

74.7 74.7
2.94" 2.94"

Y F

Y Flow to port B
B

F Flow to port A

EHO positioner spring curve

30

25
Pilot pressure [bar]

Type Code Voltage Connector

20
18.4
310B 200768661240 12 VDC AMP 15

311B 200768661250 24 VDC AMP 10

5
312B 200768661260 12 VDC Deutsch 3.9
0
313B 200768661270 24 VDC Deutsch -8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8
Std overlap Stroke [mm]

The pressure differential between pilot lines Pp and Tp should be > 25 bar in order to be sure to switch the spool to full stroke in all operating conditions

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8.12.2 Electro-hydraulic open loop proportional control + floating position without step

Tp Simplified scheme
Pp

Tp Pp Pp
4 2 0 1
Pp
Tp Tp

Body Interface Spool type

EH EH (W version)

see 6.10
4±10% Nm

4.27"
108.5

12.5±10% Nm

74.7 74.7
2.94" 2.94"

Y F

Y Flow to port B

F Flow to port A

EHO positioner spring curve

Type Code Voltage Connector 30

25
330B 200768661280 12 VDC AMP 22.3
Pilot pressure [bar]

20 18,4
331B - 24 VDC AMP 16,3
15

10
332B 200768661290 12 VDC Deutsch
5 3.9
333B - 24 VDC Deutsch
0
-8 -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8 9 10 11 12
Stroke [mm]
Std overlap

The pressure differential between pilot lines Pp and Tp should be > 25 bar in order to be sure to switch the spool to full stroke in all operating conditions
For further information, please contact our Sales Department.

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8.13 Stepper motor electronic control (ESM)

113.8 42
40.48" 1.65"

107.5
4.23"
1.15"
28.5
Body Interface Spool type
1 0 2
12V/24V
GND
CAN-
CAN+ ESM control must be
combined with positioner
type 79 (see section 8.1)
ST ST
PIN a: CAN+
PIN b: CAN-
PIN c: GND
PIN d: nominal voltage

Technical specification
Version 12 VDC 24 VDC
Communication protocol CAN-BUS SAE J1939 compatible
Power supply* 9 - 16 VDC 16 - 33 VDC
Working stroke** -7.2 / +11.2 mm
Speed *** up to 80 mm/sec up to 100 mm/sec
Standard resolution 0.048 mm/CAN value
Min. Actuating force > 240 N
Max recommended load force 160 N
Max residual force < 50 N
Connector type Delphi Metri Pack 150.2

* reduced speed: under 10.8 VDC for 12 VDC version

under 20 VDC for 24 VDC version
** Spool stroke can be limited by the software.
*** Speed restriction due to internal temperature control.
For further information, please contact our Sales Department.

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8.14 Spool position transducer / Hall effect sensor
8.14.1 Features Electrical Connections (proportional version)
Code : 200544124029 1. Vcc - Blue
2. Gnd - Green/Yellow
3. Proportional Output - Brown
4. n.u. - Black
Mechanical specifications
Maximum mechanical stroke ³±8,5mm 4
3
External diameter 35 mm

Body lenght 91 ± 8,5mm 2

Cable lenght (including connector) 350mm 1

Maximum operating pressure 5 MPa (50bar)

Operating temperature range -25°C / +105°C

Protection class IP 67

Connector Amp seal, 4

male pins

Mechanical life 5 Million cycles

Electrical specifications
Output signal control characteristic
Power Supply Voltage 7 ÷ 32 Vdc (proportional version)
Current Consumption < 20 mA 4
Output voltage signal (V)

Output signal in Neutral 2,5V 3.5

Output signal range 1V÷4V 3

Tolerance on output signal ± 0,1 V 2.5

Maximum linearity error (-25 ÷ 105°C) ± 2% 2

1.5
Max. Electrical stroke linearity range ± 7,5mm

Electrical life 10 Million 1

cycles 10 9 8 7 6 5 4 3 2 1 1 2 3 4 5 6 7 8 9 10
Extend Spool stroke (mm) Retract
Red lines: -25 / +85 °C Green lines: 85 / 105 °C

HP

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9 End covers
9.1 End cover plate with tank line port (PH and PM series)
PH: with integrated pilot lines for electro-hydraulics controls
PM: standard end cover without integrated pilot lines
25.8 4
1.02" .16"
T

VRPR valve

122.25
4.81"
2.72"
69

2.11"
53.5
1.18"
1.22"
31

30

20 10 VRC valve 35
.79" .39" 1.38"
LS (Optional) 99.75 52
31 3.93" 2.05"
1.22"
P (Optional) 181.25
7.14"

Pp

Pp relief valve Tp
(Optional)

PH end cover
PH end cover with LS flow control valve
PM end cover
with LS flow control valve + pilot tank line check valve
with LS flow control
+ external supply pilot oil + pilot oil supply pressure reducing valve
valve + high pressure
+ external drain pilot oil + pilot oil supply relief valve
supply line
+ high pressure supply line
Pp Tp Pp Tp

Pp Pp
Tp Tp
LS LS LS LS LS

Hp Hp
P P P P P
Pp Pp
Tp Tp
T T T

T T T

Pp max supply pressure 40 bar

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10 Suitable applications (Examples)
10.1 Wheel loaders

10.2 Telehandlers

10.3 Forestry cranes

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10.4 Product identification plate

1 2000224***** 1 : BHRE Product Order Code.

2
3 2 : Customer Code (on demand, only - if not request there
4 will be the Manufacturing year and month).
3 : WO : Production Work Order .
MADE IN ITALY
4 : WO progressive number.

Manufacturing Manufacturing year

month 2016 2017 2018 2019 2020 2021
January 6A 7A 8M 9M 0M 1M
February 6B 7B 8N 9N 0N 1N
March 6C 7C 8P 9P 0P 1P
April 6D 7D 8Q 9Q 0Q 1Q
May 6E 7E 8R 9R 0R 1R
June 6F 7F 8S 9S 0S 1S
July 6G 7G 8T 9T 0T 1T
August 6H 7H 8U 9U 0U 1U
September 6I 7I 8V 9V 0V 1V
October 6J 7J 8Z 9Z 0Z 1Z
November 6K 7K 8X 9X 0X 1X
December 6L 7L 8Y 9Y 0Y 1Y

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200-P-991240-EN-01/03.2017 45/46
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info.it@bucherhydraulics.com www.bucherhydraulics.com
E 2017 by Bucher Hydraulics S.p.A, I-42124 Reggio Emilia
All rights reserved.
Data is provided for the purpose of product description only, and must not be construed as warranted characteristics in the legal sense. The
information does not relieve users from the duty of conducting their own evaluations and tests. Because the products are subject to continual
improvement, we reserve the right to amend the product specifications contained in this catalogue.
Classification: 430.300.000

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