Danfoss ECO 80 User guide
Technical Information
Directional Control Valve
ECO 80
www.danfoss.com
Technical Information
ECO 80 Directional Control Valve
Revision history Table of revisions
Date Changed Rev
September 2020 Document entirely re-worked - new version of document 0301
February 2020 Updated document number to match online reference 0201
August 2019 Updated code numbers for EVO end plates 0103
March 2017 Updated schematic 0102
October 2016 First edition 0101
2 | © Danfoss | September 2020 BC199786485316en-000301
Technical Information
ECO 80 Directional Control Valve
Contents
General information
General description......................................................................................................................................................................... 5
ECO modules......................................................................................................................................................................................5
Safety in systems...............................................................................................................................................................................5
ECO 80 LS sectional view............................................................................................................................................................... 6
Mechanical acting ECO 80
ECO 80 mechanical modules overview.................................................................................................................................... 8
EVP inlet modules - mechanical acting
Open center EVP.............................................................................................................................................................................10
Closed center EVP.......................................................................................................................................................................... 12
EVB basic modules - mechanical acting
EVB low body...................................................................................................................................................................................15
EVB medium body......................................................................................................................................................................... 16
EVB basic modules accessories
PVLP shock/anti-cavitation valve............................................................................................................................................. 18
PVLA suction valve and cavity plug.........................................................................................................................................20
EVBS mechanical flow control spools
EVBS fluid flow characteristics - Theoretical performance..............................................................................................22
EVBS - female extension.............................................................................................................................................................. 24
EVBS - female extension and through acting...................................................................................................................... 25
EVBS - female extension and Detent 03 and 02 position spool out or in..................................................................26
EVBS - female extension and Micro Switch...........................................................................................................................27
ECO 80 mechanical - actuation
EVOS - open spool through action.......................................................................................................................................... 29
EVOS - open spool mechanical actuation............................................................................................................................. 31
EVME - open spool centering.................................................................................................................................................... 33
EVME - micro switch NO.............................................................................................................................................................. 35
EVOS x EVME combination overview......................................................................................................................................36
EVO - end plate
EVO......................................................................................................................................................................................................37
EVO with LX-connection..............................................................................................................................................................37
Electrical actuated ECO 80
ECO 80 electrical modules overview.......................................................................................................................................39
EVP inlet modules - electrical
Open center EVP with PPRV....................................................................................................................................................... 41
Closed center EVP with PPRV.....................................................................................................................................................44
EVP inlet module accessories
EVPX electrical LS pressure unloading valve........................................................................................................................46
Plug for external pilot oil supply.............................................................................................................................................. 47
EVB basic modules - electrical actuation
EVB low body...................................................................................................................................................................................49
EVB medium body......................................................................................................................................................................... 50
EVB basic modules accessories
PVLP shock/anti-cavitation valve............................................................................................................................................. 51
PVLA suction valve and cavity plug.........................................................................................................................................52
EVBS electrical flow control spools
EVBS fluid flow characteristics - Theoretical performance..............................................................................................54
EVBS - electrical flow control spool......................................................................................................................................... 55
EVBS - electrical flow control spool with soft spring for EVHCO...................................................................................56
EVBS - EVPN spool..........................................................................................................................................................................56
ECO 80 electrical - actuation
EVM mechanical actuation.........................................................................................................................................................57
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Technical Information
ECO 80 Directional Control Valve
Contents
EVM without adjustment screws........................................................................................................................................ 57
EVM with adjustment screws............................................................................................................................................... 57
EVM dimensions, torque, and part numbers..................................................................................................................57
EVC - cover for mechanical actuation.....................................................................................................................................59
EVH - hydraulic actuation............................................................................................................................................................60
EVHC - electrical actuation..........................................................................................................................................................61
EVHCO - Low current on/off electrical actuation................................................................................................................63
EVPN - pneumatic actuation......................................................................................................................................................64
EVPN - electrical pneumatic action..........................................................................................................................................65
EVO - end plate
EVO with pneumatic port............................................................................................................................................................68
EVT - assembly kit for both mechanical and electrical acting
ECO 80 dimension overview
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Technical Information
ECO 80 Directional Control Valve
General information
General description
The ECO 80 LS is a hydraulic load sensing proportional valve group designed to give maximum flexibility
in design and build concept. The ECO 80 LS is designed as a load sensing directional control valve which
will lead to increased machine performance, higher efficiency, reduced cooling requirements and fuel
saving compared to conventional directional control valves.
ECO 80 LS features
PVG load-sensing proportional valves features and benefits summarized inb bullets below:
•
Load sensing directional control:
Proportional control of oil flow to a work function
‒
•
Modular build concept:
Up to 12 basic modules per ECO 80 LS valve group
‒
Different, interchangeable spool variants
‒
System pressure up to 280 bar
‒
Work port pressure up to 320 bar
‒
Compact design and installation
‒
ECO modules
EVP, pump side modules
•
Built-in pressure relief valve
•
Pressure gauge connection
•
Versions:
Open center version for systems with fixed displacement pumps
‒
Closed center version for systems with variable displacement pumps
‒
Integrated 25 bar pilot oil supply for hydraulic and electrohydraulic actuaqtion
‒
Versions prepared for electrical LS unloading valve
‒
EVB, basic modules
•
Interchangeable spools
•
Load holding check valve in channel P
•
Option for shock and suction valves for port A and B
Actuation modules
The basic module could be fitted with three main different actuation modules:
•
Mechanical
•
Electrical
•
Hydraulic
•
Pneumatic
Safety in systems
All makes and all types of control valves (incl. proportional valves) can fail, thus the necessary protection
against the serious consequences of function failure should always be built into the system. For each
application an assessment should be made for the consequences of pressure failure and uncontrolled or
blocked movements.
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W
Technical Information
ECO 80 Directional Control Valve
General information
Warning
All makes/brands and types of directional control valves – inclusive proportional valves – can fail and
cause serious damage. It is therefore important to analyze all aspects of the application.
Because the proportional valves are used in many different operation conditions and applications, the
manufacturer of the application is alone responsible for making the final selection of the products – and
assuring that all performance, safety and warning requirements of the application are met.
The process of choosing the control system – and safety levels – is governed by the machine directives
EN 13849 (Safety related requirements for control systems).
ECO 80 LS sectional view
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Technical Information
ECO 80 Directional Control Valve
General information
1 Work Section (EVB)
2 Spool (EVBS)
3 Check valve
4 Open spool centering (EVME)
5 Mechanical actuator (EVOS)
6 Inlet module (EVP)
7 Load sense relief valve
8 Unloader spool
9 Uloader spool spring
10 Mechanical actuator (EVM)
11 Electrical actuator (EVHC)
12 Shock valve (PVLP)
13 Shuttle disc
Option moutn only possible with EVOS/EVME configuration
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Technical Information
ECO 80 Directional Control Valve
Mechanical acting ECO 80
This section will only be about the mechanical acting modules of the ECO 80 portfolio. For information on
the electrical actuated modules of the ECO80 portfolio, see Electrical actuated ECO 80 on page 39.
ECO 80 mechanical modules overview
8 | © Danfoss | September 2020 BC199786485316en-000301
[3.86]
98
[3.86]
98
[2.10]
53,4
[4.90]
124,5
[0.17]
4,3
Technical Information
ECO 80 Directional Control Valve
EVP inlet modules - mechanical acting
The ECO 80 EVP inlet modules, also referred to as pump side modules, act as an interface between the
ECO 80 directional valve group and the hydraulic pump and tank reservoir.
EVP Inlet module EVP Inlet module dimensions
Fixed displacement pump symbol Variable displacement pump symbol
The EVP inlet module variants are based on a generic platform with a selection of additional features,
enabling you to tailor the EVP to suit the demands of any hydraulic system:
•
Open center EVP (for fixed displacement pumps)
•
Closed center EVP (for variable displacement pumps)
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Danfoss | September 2020 BC199786485316en-000301 | 9
LS
T
P
M
Technical Information
ECO 80 Directional Control Valve
EVP inlet modules - mechanical acting
Open center EVP
The basic Open Center EVP inlet module is intended for use with fixed displacement pumps in
applications, where a valve group with mechanically controlled work sections is desired.
The Open Center EVP features:
•
Integrated LS pressure relief valve
•
Threaded ports for P/T/LS and M measuring gauge
Open center EVP schematic
Technical specification for EVP
Max. P-port continuous Max. T-port static/dynamic Max. rated flow
280 bar [4061 psi] 25/40 bar [365/580 psi] 100 l/min [26.4 US gal/min]
Technical specification
Parameter Minimum Recommended range Maximum
Fluid temperature
Fluid viscosity
Fluid cleanliness
Operating temperature
-30°C [-22°F] 30 to 60°C [86 to 140°F] 90°C [194°F]
4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347 SUS] 460 mm2/s [2128 SUS]
23/19/16 (according to ISO 4406)
Ambient: -30 to 60°C [-22 to 140°F]
10 | © Danfoss | September 2020 BC199786485316en-000301
20 40 60 80
[l/min]
[US gal/min]
4 8 12 16 20
300
250
200
150
100
50
0
Q
PP
4000
3000
2000
1000
0
0
[psi] [bar]
0
Q
10 30 50 70
50 bar
100 bar
150 bar
200 bar
250 bar
280 bar
24
90 100
Curves to inlet pressure x flow
20 40 60 80
[l/min]
[US gal/min]
4 8 12 16 20
20
16
12
8
4
0
Q
Δ PΔ P
240
160
80
0
0
[psi] [bar]
0
Q
100
24
24
320
Neutral flow pressure in EVP open center inlet
Technical Information
ECO 80 Directional Control Valve
EVP inlet modules - mechanical acting
Theoretical performance graphs
Pressure relief valve characteristics
Neutral by-pass pressure drop characteristics (open center)
Part numbers for Open Center EVP
Part numbers P-port T-port M-, LS-port Mounting
11173005
11172981
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Danfoss | September 2020 BC199786485316en-000301 | 11
G 1/2 G 1/2 G 1/4 M8 x 1.25
7/8-14 UNF 7/8-14 UNF 9/16-18 UNF M8 x 1.25
LS
T
P
M
Technical Information
ECO 80 Directional Control Valve
EVP inlet modules - mechanical acting
Closed center EVP
The basic Closed Center EVP inlet is intended for use with variable displacement pumps in applications
where a valve group with mechanically controlled work sections is desired.
The Closed Center EVP features:
•
Integrated LS pressure relief valve
•
Threaded ports for P/T/LS and M measuring gauge
Closed center EVP schematic
Technical specification for EVP
Max. P-port continuous Max. T-port static/dynamic Max. rated flow
280 bar [4061 psi] 25/40 bar [365/580 psi] 100 l/min [26.4 US gal/min]
Technical specification
Parameter Minimum Recommended range Maximum
Fluid temperature
Fluid viscosity
Fluid cleanliness
Operating temperature
-30°C [-22°F] 30 to 60°C [86 to 140°F] 90°C [194°F]
4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347 SUS] 460 mm2/s [2128 SUS]
23/19/16 (according to ISO 4406)
Ambient: -30 to 60°C [-22 to 140°F]
12 | © Danfoss | September 2020 BC199786485316en-000301
20 40 60 80
[l/min]
[US gal/min]
4 8 12 16 20
300
250
200
150
100
50
0
Q
PP
4000
3000
2000
1000
0
0
[psi] [bar]
0
Q
10 30 50 70
50 bar
100 bar
150 bar
200 bar
250 bar
280 bar
24
90 100
Curves to inlet pressure x flow
Technical Information
ECO 80 Directional Control Valve
EVP inlet modules - mechanical acting
Theoretical performance graphs
Pressure relief valve characteristics
Part numbers for Mechanical Acting Closed Center EVP
Part numbers P-port T-port M-, LS-port Mounting
11173006
11173002
G 1/2 G 1/2 G 1/4 M8 x 1.25
7/8-14 UNF 7/8-14 UNF 9/16-18 UNF M8 x 1.25
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Danfoss | September 2020 BC199786485316en-000301 | 13
[2.70]68.5
[1.70]43
[0.35]9
[1.57]40
[1.38]35
[0.79]
20
[0.20]5
[0.19]4.8
[4.80]122
[3.58]91
[1.08]
27.5
[0.31]
8
[3.72]94.5
[4.49]114
[0.19]4.7
[3.07]78
[1.69]43
[2.70]68.5
[0.35]9
[1.57]40
[1.38]35
[0.79]
20
[0.20]5
[2.42]61.5
[4.49]114
[0.31]8
[3.72]94.5
[1.08]27.5
[0.28]7
Technical Information
ECO 80 Directional Control Valve
EVB basic modules - mechanical acting
The ECO 80 EVB basic modules, also referred to as work sections, are the interface between the ECO 80
directional control valve and the work function such as a cylinder or a motor. The EVB comes in two main
variants – a low body and a medium body with shock/anti-cavitation valve facility (PVLP)
EVB low basic module EVB low basic module dimensions
EVB medium basic module EVB medium basic module dimensions
The EVB basic module variants are based on a generic platform with a selection of additional features,
enabling you to tailor the EVB to suit the demands of any hydraulic system:
•
EVB low body
•
EVB medium body
14 | © Danfoss | September 2020 BC199786485316en-000301
A
B
1
0
2
Technical Information
ECO 80 Directional Control Valve
EVB basic modules - mechanical acting
EVB low body
The EVB low body is intended for controlling a work function where the function behavior in terms of
flow and pressures allows dependency on the load pressure of other functions used simultaneously. The
integrated load drop check valve prevents flow back from work ports influencing other functions.
The EVB low body features:
•
Integrated LS shuttle network
•
Load drop check valve
Schematic
Technical specification for A/B-port
Max. continuous pressure Max. intermittent pressure Max. rated flow
280 bar [4061 psi] 320 bar [4641 psi] 100 l/min [26.4 US gal/min]
Technical specification
Parameter Minimum Recommended range Maximum
Fluid temperature
Fluid viscosity
Fluid cleanliness
Operating temperature
-30°C [-22°F] 30 to 60°C [86 to 140°F] 90°C [194°F]
4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347 SUS] 460 mm2/s [2128 SUS]
23/19/16 (according to ISO 4406)
Ambient: -30 to 60°C [-22 to 140°F]
Part numbers
Part numbers A/B-port
11168505
11168504
G 1/2
7/8-14 UNF
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Danfoss | September 2020 BC199786485316en-000301 | 15
A
B
1
0
2
Technical Information
ECO 80 Directional Control Valve
EVB basic modules - mechanical acting
EVB medium body
The EVB low body is intended for controlling a work function where the function behavior in terms of
flow and pressures allows dependency on the load pressure of other functions used simultaneously. The
integrated load drop check valve prevents flow back from work ports influencing other functions.
Compared to the EVB low body the medium body has the option of adding PVLP/PVLA to the work
section.
The EVB medium body features:
•
Integrated LS shuttle network
•
Load drop check valve
•
Shock/anti-cavitation valve and suction facility (PVLP/PVLA)
Schematic
Technical specification for A/B-port
Max. continuous pressure Max. intermittent pressure Max. rated flow
280 bar [4061 psi] 320 bar [4641 psi] 100 l/min [26.4 US gal/min]
Technical specification
Parameter Minimum Recommended range Maximum
Fluid temperature
Fluid viscosity
Fluid cleanliness
Operating temperature
-30°C [-22°F] 30 to 60°C [86 to 140°F] 90°C [194°F]
4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347 SUS] 460 mm2/s [2128 SUS]
23/19/16 (according to ISO 4406)
Ambient: -30 to 60°C [-22 to 140°F]
Part numbers
Part number A/B-port
11168503
11168502
G 1/2
7/8-14 UNF
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Technical Information
ECO 80 Directional Control Valve
EVB basic modules accessories
The generic EVB module accessory platform include the PVLP shock and anti-cavitation valve and PVLA
suction valve.
•
PVLP Shock and Anti-cavitation valve
•
PVLA Suction valve
•
Cavity plug
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Danfoss | September 2020 BC199786485316en-000301 | 17
Port pressure
Technical Information
ECO 80 Directional Control Valve
EVB basic modules accessories
PVLP shock/anti-cavitation valve
The PVLP will relief a pressure peak to the internal tank galleries and will furthermore suck oil from the
tank to the work port to prevent cavitation. Pressure settings range 32-320 bar [460-4641 psi].
Features:
•
Shock valve
•
Anti-cavitation
•
Lifetime of 200,000 actuations
•
Optional fixed or adjustable
PVLP schematic
Technical specification
Parameter Minimum Recommended range Maximum
Fluid temperature
Fluid viscosity
Fluid cleanliness
Operating temperature
-30°C [-22°F] 30 to 60°C [86 to 140°F] 90°C [194°F]
4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347 SUS] 460 mm2/s [2128 SUS]
23/19/16 (according to ISO 4406)
Ambient: -30 to 60°C [-22 to 140°F]
Part numbers for fixed PVLP
Part number Pressure setting in bar [psi]
157B2032 32 [460]
157B2050 50 [725]
157B2063 63 [914]
157B2080 80 [1160]
157B2100 100 [1450]
157B2125 125 [1813]
157B2140 140 [2031]
157B2150 150 [2175]
157B2160 160 [2320]
157B2175 175 [2538]
157B2190 190 [2755]
157B2210 210 [3045]
157B2230 230 [3335]
157B2240 240 [3480]
157B2250 250 [3625]
157B2265 265 [3845]
157B2280 280 [4061]
157B2300 300 [4351]
157B2320 320 [4641]
18 | © Danfoss | September 2020 BC199786485316en-000301
Technical Information
ECO 80 Directional Control Valve
EVB basic modules accessories
Part numbers for adjustable PVLP
Part number Pressure setting in bar [psi]
11006594 121-250 [1755-3626]
11006595 251-285 [3640-4134]
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Danfoss | September 2020 BC199786485316en-000301 | 19
Port pressure
Technical Information
ECO 80 Directional Control Valve
EVB basic modules accessories
PVLA suction valve and cavity plug
The PVLA will suck oil from the tank to the work port to prevent cavitation by the 0.5 bar spring. The plug
will ensure that when using a single acting spool, all flow returning through the work port is led to tank.
PVLA schematic
Cavity plug schematic
Technical specification
Parameter Minimum Recommended range Maximum
Fluid temperature
Fluid viscosity
Fluid cleanliness
Operating temperature
-30°C [-22°F] 30 to 60°C [86 to 140°F] 90°C [194°F]
4 mm2/s [39 SUS] 12 to 75 mm2/s [65 to 347 SUS] 460 mm2/s [2128 SUS]
23/19/16 (according to ISO 4406)
Ambient: -30 to 60°C [-22 to 140°F]
Part numbers for PVLA and plug
PVLA Cavity plug
157B2001 11177714
20 | © Danfoss | September 2020 BC199786485316en-000301
Technical Information
ECO 80 Directional Control Valve
EVBS mechanical flow control spools
The mechanical acting EVBS spools determine the flow out of the work section and are based on a
generic platform with a wide selection of additional features, enabling you to tailor the EVBS to suit the
demands of any hydraulic system and any function.
The mechanical acting EVBS spool comes in four different main variants:
•
EVBS Female Extension
•
EVBS Female Extension and through acting
•
EVBS Female Extension and Detent 03 position and 02 position spool out or in
•
EVBS Female Extension and Micro Switch
1
1
For 02 position detent spool out is necessary to use an accessory part number 11173406, see EVME, detent 02 position spool to A or
B
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Danfoss | September 2020 BC199786485316en-000301 | 21
BP
5
10
15
20
25
30
35
40
45
50
55
60
65
[l/min]
[US gal/min]
70
75
80
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
A
P
[mm]
<-Spool stroke->
5
43
[in]
0-0.04-0.08-0.12
-0.16-0.20
2
-0.24
1
0
-0.28-0.31-0.35
-0.39
A
E
C
D
B
85
90
95
100
22
23
24
25
26
0-1
-2
-3
-4
-5
0.39
0.350.310.28
0.240.20
0.16
0.120.080.04
0
[mm]
[in]
Flow
105
110
115
120
27
28
29
30
31
32
Spool types:
A = 8/min
B = 25 l/min
C = 40 l/min
D = 60 l/min
E = 80 l/min
F = 100 l/min*
F
Technical Information
ECO 80 Directional Control Valve
EVBS mechanical flow control spools
EVBS fluid flow characteristics - Theoretical performance
Oil flow as a function of spool travel
22 | © Danfoss | September 2020 BC199786485316en-000301
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