Danfoss ECO 80 User guide

Technical Information

Directional Control Valve

ECO 80

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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

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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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Technical Information

ECO 80 Directional Control Valve

General information

W 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

1Work Section (EVB)

2Spool (EVBS)

3Check valve

4Open spool centering (EVME)

5Mechanical actuator (EVOS)

6Inlet module (EVP)

7Load sense relief valve

8Unloader spool

9Uloader spool spring

10Mechanical actuator (EVM)

11Electrical actuator (EVHC)

12Shock valve (PVLP)

13Shuttle 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

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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
	98	[3.86]
	124,5	[4.90]	4,3	[0.17]

<![if ! IE]> <![endif]>[3.86]
<![if ! IE]> <![endif]>98
53,4	[2.10]

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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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

LS	M
T
P

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		-30°C [-22°F]		30 to 60°C [86 to 140°F]	90°C [194°F]
Fluid viscosity		4 mm2/s [39 SUS]		12 to 75 mm2/s [65 to 347 SUS]	460 mm2/s [2128 SUS]
Fluid cleanliness				23/19/16 (according to ISO 4406)
Operating temperature				Ambient: -30 to 60°C [-22 to 140°F]

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ECO 80 Directional Control Valve

EVP inlet modules - mechanical acting

Theoretical performance graphs

Pressure relief valve characteristics

P P

[psi] [bar]

4000					300										Curves to inlet pressure x flow																				50 bar
					250
																																			100 bar
3000					200																														150 bar
																																			200 bar
					150																														250 bar
2000																																			280 bar
					100
1000
					50																														Q
0					0
	0							10		20			30		40			50			60		70		80			90		100				[l/min]
																																			Q
	0									4			8					12			16				20			24						[US gal/min]

Neutral by-pass pressure drop characteristics (open center)

[psi]	P	[bar]	P	Neutral flow pressure in EVP open center inlet
		24
320
		20
240		16
160		12
		8
80		4
0		0								Q
		0	20	40		60	80		100	[l/min]
										Q
		0	4	8	12	16	20	24	[US gal/min]

Part numbers for Open Center EVP

Part numbers	P-port	T-port	M-, LS-port	Mounting
11173005	G 1/2	G 1/2	G 1/4	M8 x 1.25
11172981	7/8-14 UNF	7/8-14 UNF	9/16-18 UNF	M8 x 1.25

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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

LS	M
T
P

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		-30°C [-22°F]		30 to 60°C [86 to 140°F]	90°C [194°F]
Fluid viscosity		4 mm2/s [39 SUS]		12 to 75 mm2/s [65 to 347 SUS]	460 mm2/s [2128 SUS]
Fluid cleanliness				23/19/16 (according to ISO 4406)
Operating temperature				Ambient: -30 to 60°C [-22 to 140°F]

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ECO 80 Directional Control Valve

EVP inlet modules - mechanical acting

Theoretical performance graphs

Pressure relief valve characteristics

	P				P
[psi]			[bar]
4000			300												Curves to inlet pressure x flow																					50 bar
			250
																																				100 bar
3000			200																																	150 bar
																																				200 bar
			150																																	250 bar
2000																																				280 bar
			100
1000
			50																																	Q
0			0
			0				10		20			30			40			50			60		70		80			90		100					[l/min]
																																				Q
			0						4			8						12			16				20			24						[US gal/min]
Part numbers for Mechanical Acting Closed Center EVP
Part numbers					P-port								T-port									M-, LS-port								Mounting
11173006					G 1/2								G 1/2									G 1/4								M8 x 1.25
11173002					7/8-14 UNF								7/8-14 UNF									9/16-18 UNF								M8 x 1.25

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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

				<![if ! IE]> <![endif]>91 [3.58]
8	[0.31]	27.5		<![if ! IE]> <![endif]>[0.19]
		[1.08]
			94.5 [3.72]	<![if ! IE]> <![endif]>4.8
			114 [4.49]
			122 [4.80]

<![if ! IE]> <![endif]>68.5 [2.70]	<![if ! IE]> <![endif]>43 [1.70]	<![if ! IE]> <![endif]>9 [0.35]
	5 [0.20]		20
			[0.79]
			35[1.38]
			40 [1.57]

EVB medium basic module	EVB medium basic module dimensions
		<![if ! IE]> <![endif]>[0.28]	<![if ! IE]> <![endif]>61.5 [2.42]
		<![if ! IE]> <![endif]>7
	8 [0.31]	<![if ! IE]> <![endif]>[0.19]
	27.5 [1.08]
	94.5 [3.72]	<![if ! IE]> <![endif]>4.7
	114 [4.49]

<![if ! IE]> <![endif]>78 [3.07]	<![if ! IE]> <![endif]>68.5 [2.70]	<![if ! IE]> <![endif]>43 [1.69]	<![if ! IE]> <![endif]>9 [0.35]
		5 [0.20]		20
				[0.79]
				35 [1.38]
				40[1.57]

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

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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

1	0	2	B

A

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		-30°C [-22°F]		30 to 60°C [86 to 140°F]		90°C [194°F]
Fluid viscosity		4 mm2/s [39 SUS]		12 to 75 mm2/s [65 to 347 SUS]		460 mm2/s [2128 SUS]
Fluid cleanliness				23/19/16 (according to ISO 4406)
Operating temperature				Ambient: -30 to 60°C [-22 to 140°F]
	Part numbers
	Part numbers				A/B-port
	11168505				G 1/2
	11168504				7/8-14 UNF

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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

1	0	2	A

B

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		-30°C [-22°F]		30 to 60°C [86 to 140°F]		90°C [194°F]
Fluid viscosity		4 mm2/s [39 SUS]		12 to 75 mm2/s [65 to 347 SUS]		460 mm2/s [2128 SUS]
Fluid cleanliness				23/19/16 (according to ISO 4406)
Operating temperature				Ambient: -30 to 60°C [-22 to 140°F]
	Part numbers
	Part number				A/B-port
	11168503				G 1/2
	11168502				7/8-14 UNF

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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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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

Port pressure

Technical specification

Parameter	Minimum	Recommended range	Maximum
Fluid temperature	-30°C [-22°F]	30 to 60°C [86 to 140°F]	90°C [194°F]
Fluid viscosity	4 mm2/s [39 SUS]	12 to 75 mm2/s [65 to 347 SUS]	460 mm2/s [2128 SUS]
Fluid cleanliness		23/19/16 (according to ISO 4406)
Operating temperature		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]

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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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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

Port pressure

Technical specification

Parameter	Minimum	Recommended range	Maximum
Fluid temperature	-30°C [-22°F]	30 to 60°C [86 to 140°F]	90°C [194°F]
Fluid viscosity	4 mm2/s [39 SUS]	12 to 75 mm2/s [65 to 347 SUS]	460 mm2/s [2128 SUS]
Fluid cleanliness		23/19/16 (according to ISO 4406)
Operating temperature		Ambient: -30 to 60°C [-22 to 140°F]

Part numbers for PVLA and plug

PVLA	Cavity plug
157B2001	11177714

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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 in1

•EVBS Female Extension and Micro Switch

1For 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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ECO 80 Directional Control Valve

EVBS mechanical flow control spools

EVBS fluid flow characteristics - Theoretical performance

Oil flow as a function of spool travel

Flow

P		B	[l/min]

120

115

110

105

100

95

90

85

80

75

70

65

60

55

50

45

40

35

30

25

20

15

10

5

[mm]
	-5		-4		-3		-2		-1		0

[US gal/min]							P				A
32																F
31
		Spool types:
30		A = 8/min
29		B = 25 l/min
28		C = 40 l/min
27		D = 60 l/min
26		E = 80 l/min														E
25		F = 100 l/min*
24
23
22
21
20
19
18																D
17
16
15
14
13
12																C
11
10
9
8
7																B
6
5
4																A
3
2
1
0		1				2		3			4			5

<-Spool stroke->

[in]
	-0.39 -0.35 -0.31 -0.28 -0.24 -0.20 -0.16 -0.12 -0.08 -0.04											0		0		0.04 0.08 0.12 0.16 0.20 0.24 0.28 0.31 0.35 0.39

[mm]

[in]

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