16 160/200 60/180 130/180 130/180 32 25 16 22,5 43 56 54 42,5 20 2 2 0,03 0,05

270/400 300/430 300/430 300/430 45 34 25 27 58 72 70 57 30 2,5 2,5 0,03 0,05

540/670 480/670 480/670 480/670 60 45 32 38,5 70 85 83 68,5 30 2,5 2,5 0,03 0,1

840/1200 940/1400 940/1400 940/1400 75 55 40 54,5 87 105 102 84,5 30 3 3 0,05 0,1

2200 1500/2200 1500/2200 1500/2200 90 68 50 62,5 100 122 117 97,5 35 3 3 0,05 0,1

3500 2200/3500 2200/3500 2200/3500 120 90 63 87 130 155 150 127 40 4 4 0,05 0,2

5400 - - 4000/5600 145 110 80 130,5 175 205 200 170,5 40 5 5 0,05 0,2

Atos spa

21018 Sesto Calende, Italy - Fax 0331 920005

Cartridge valves type LI

ISO 7368 size 16 ÷ 80

Table H003-11/E

Modular cartridge valves realize pres-

sure, flow, directional and check con-

trols and are composed by a 2-way

cartridge housed in a recess of stan-

dard dimensions and by a closing

functional element ➀ called “cover”.

The cartridge is composed by an

hydraulically piloted poppet ➁ sliding

into a drilled sleeve ➂; spring ➃ keep

the poppet closed in resting position.

Poppet is hydraulically piloted by

means of internal connections in the

cover (X, F, Z1, Z2, Y). External pilot

line can operate directly or by means

of solenoid valve or pressure relief val-

ves housed in the cover.

Many different covers are available,

each providing a different function to

realize a complete range of valves and

allow the development of any elec-

trohydraulic circuit for the control of

machines and systems, see section

쪪

쪫

쪬

쪭

Poppets may have different geometri-

cal shapes and area ratios as descri-

bed in section

쪮

, to optimize pressure,

flow and directional controls.

These valves are available in standard

sizes 16 to 80 according to ISO 7368

(DIN 24342).

Flow up to 5600 l/min at ∆p = 6 bar,

pressure up to 350 bar.

Atos also realizes integrated electrohy-

draulic blocks customized to the appli-

cation by combining ISO components

and cartridge valves within compact

functional manifolds.

Proportional cartridge valves are also

available, see tab. F300 to F340.

H003

LI MHA -2 /210 - IX 24DC ** /* X**

Pressure range control (only for LIM*, LIRA, LICM):

50 = 6 ÷ 50 bar;

100 = 8 ÷ 100 bar;

210 = 10 ÷ 210 bar;

350 = 15 ÷ 350 bar;

3 HYDRAULIC CHARACTERISTICS AND RECESS DIMENSIONS

H003

LIDD

LIDEW4

Pilot solenoid valve options:

-IX = solenoid OI for AC and DC supply

Supply voltage, see table E010

Cover according

to ISO 7368

Function and type of control

see section

쪪

쪫

쪬

쪭

Size:

1 = 16 3 = 32 5 = 50 8 = 80

2 = 25 4 = 40 6 = 63

Special orifices setting

Design number

Synthetic fluid:

WG = water glycol

PE = phosphate ester

Spring cracking pressure, see the specific valve tables

for the available cracking pressure:

1 = 0,3 bar 4 = 4 bar

2 = 1,5 bar 6 = 5,5 bar

3 = 3 bar 7 = 7 bar

Cartridge according to

ISO 7368

Size, the same of relevant cover:

16 = 16 40 = 40 80 = 80

25 = 25 50 = 50

32 = 32 63 = 63

see section

쪮

Type of poppet: see section

쪮

Design number

Synthetic fluid:

WG = water glycol

PE = phosphate ester

1 MODEL CODE FOR COVERS

MODEL CODE FOR CARTRIDGES

Pressure Flow Direction Check

ø d3 ø d4

control control control function max max max

ø d1 ø d2

L1 L2 L3 L5 L6 L7 U W

Qmax [l/min]

∆p = 6 bar

Sizes

Recess dimensions [mm]

SC LI - 25 31 2 ** /*

+0,1

+0,2

+0,1

+0,2

Function and type of control Size Hydraulic sketch

Cover

size 6 ÷ 32

Cover

size 40 ÷ 80

Cartridges

Pressure relief control with

manual setting

LIMM

Pressure relief control with

solenoid valve for venting

LIMHA = unloading when sole-

noid is de-energized

LIMHC = unloading when sole-

noid is energized

Pressure reducing control with

manual setting.

Open in resting position

LIRA

Pressure compensator to be

coupled with flow control valves

LIC

Pressure compensator with

mechanical max pressure

regulation to be coupled with flow

control valves.

LICM

SC LI-

**31*

size 16... 80

SC LI-

**34*

size 16

SC LI-**35*

size 16...50

SC LI-**31*

size 16...80

SC LI-**34*

size16

SC LI-

**35*

size16...50

SC LI-

**37*

size 16...40

SC LI-

**31*

size 16...80

SC LI-**36*

size 16...80

SC LI-**31*

size 16...80

SC LI-**36*

size 16...80

4 TYPICAL FUNCTIONS OF COVERS - PRESSURE CONTROL, see table H010

Function and type of control Size Hydraulic sketch

Cover

size 16 ÷ 63

Cartridges

Flow control with manual setting

LIQV

They can be coupled with LIC or

LICM valves with poppet type 31,

36 or 37 for compensated flow

control

Flow control with stroke limiter

LIDD

SC LI-

**290

size 16

SC LI-

**490

size 16, 25

SC LI-

**32*

SC LI-

**33*

size 16...63

SC LI-

**42*

SC LI-

**43*

size 16...63

5 TYPICAL FUNCTIONS OF COVERS - FLOW CONTROL, see table H020

LIMH*

SC LI-**32*

SC LI-**33*

size 16 ... 63

SC LI-**42*

SC LI-**43*

size 16 ... 63

SC LI-**62*

SC LI-**63*

size 16, 25,

32, 50

SC LI-**32*

SC LI-**33*

size 16 ... 80

SC LI-**42*

SC LI-**43*

size 16 ... 80

SC LI-**52*

size 16 ... 50

Direct operated directional

control valve with solenoid and

shuttle valve for pilot selection

LIDBH2A = when solenoid is

de-energized only connections

X→F

LIDBH2C = when solenoid is

de-energized only connections

Z1→F

H003

Function and type of control Size Hydraulic sketch

Cover

size 16 ÷ 80

Cartridges

Direct operated directional

control valve with solenoid valve

for pilot selection

LIDEW*

Direct operated directional con-

trol valve with solenoid valve and

shuttle valve for pilot selection

LIDBH1A = open when solenoid

is de-energized

LIDBH1C = closed when sole-

noid is de-energized

SC LI-**32*

SC LI-**33*

size 16 ... 63

SC LI-**42*

SC LI-**43*

size 16 ... 63

SC LI-**32*

SC LI-**33*

size 16 ... 63

SC LI-**42*

SC LI-**43*

size 16 ... 63

6 TYPICAL FUNCTIONS OF COVERS - DIRECTIONAL CONTROL, see table H030

SC LI-**32*

SC LI-**33*

size 16 ... 80

SC LI-**42*

SC LI-**43*

size 16 ... 80

Direct operated check valve with

shuttle valve for pilot selection

LIDB

Direct operated check valve with

hydraulically operated pilot check

valve

LIDR

Function and type of control Size Hydraulic sketch

Cover

size 16 ÷ 25

Cover

size 32 ÷ 80

Cartridges

Direct operated check valve

normally closed

LIDA

Direct operated check valve

normally open

LIDO

7 TYPICAL FUNCTIONS OF COVERS - CHECK FUNCTION, see table H040

SC LI-**32*

SC LI-**33*

size 16 ... 63

SC LI-**42*

SC LI-**43*

size 16 ... 63

1A 1C

2A 2C

31 ●●●●●●●

32 ●●●●●●●

33 ●●●●●●●

34 ●❍❍ ––––

35 ●●●●● ––

36 ●●●●●❍❍

37 ●●●● –––

42 ●●●❍❍❍❍

43 ●●●❍❍❍❍

52 ●●●❍❍––

62 ●●●❍●––

63 ●●●❍●––

11/05

Function

Area ratio

(1)

Typical section

Functional sketch

(hydraulic symbol)

Type

Size

SC LI-16

SC LI-25

SC LI-32

SC LI-40

SC LI-50

SC LI-63

SC LI-80

1 : 1

1 : 1,1

1 : 2

for size 16, 25

1 : 1,6

for size 32

÷ 80

1 : 1

1 : 1,1

1 : 2

for size 16, 25

1 : 1,6

for size 32

÷ 63

1 : 1,1

1 : 1

Poppet type

LIMM, LIMHA, LIMHC, LIC, LICM

Poppet type

LIDA, LIDD, LIDB, LIDBH**,

LIDEW*

Poppet type

LIDA, LIDD, LIDB, LIDBH**,

LIDEW*

Poppet type

LIMM, LIMHA, LIMHC

1 : 1,1

Poppet type

LIMM, LIMHA, LIMHC

1 : 1

Spool type

LIC, LICM

Spool type

LIRA

Poppet type with dumping nose

LIDA, LIDD, LIDB, LIDBH**,

LIDEW*

Poppet type with dumping nose

LIDA, LIDD, LIDB, LIDBH**,

LIDEW*

Poppet type

LIDA

Poppet type

LIDO

Poppet type with dumping nose

LIDO

Spool type

LIQV

● normally available from stock

❍ on request

– not available

(1) It is the ratio of the area on which the main pressure of the circuit is applied to the area on

which the pilot pressure is applied. For example "1:2" means: 1 = area on which the main

pressure of the circuit is applied; 2 = area on which the pilot pressure is applied.

TYPICAL FUNCTIONS OF CARTRIDGES

290 ● ––––––

490 ●● –––––