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L1.0406 · L1.0506 · L1.0706 · L1.0807
Connection up to M60 x 2 · Nominal fl ow rate up to 850 l/min
Ventilating Filters
Description
Application
Ventilation of tanks for hydraulic and lubrication systems and
gearboxes.
General
The oil levels in the tanks of hydraulic systems are subject to
continuous variation due to temperature changes and the opera-
tion of cylinders and pressure vessels.
In order to prevent over pressure in the tanks, an exchange of air
with the external atmosphere is necessary. By the use of a
ventilating fi lter, the outside air that is drawn in is fi ltered and
the ingress of dust is therefore prevented.
Special features
The ventilation openings are designed that dust on the surface
of the tank is not drawn in, and that the ingress of spray and
rainwater is largely prevented. The use in marine applications
presents no problem due to the use of synthetic materials and
stainless steel.
Design
Flow direction bi-directional (air IN/OUT). The star-shaped
pleating of the fi lter material results in:
› large fi lter surfaces
› low pressure drop
› high dirt-holding capacities
› long service life
Ordering options / versions
Integrated oil-level dipstick (for all types):
A dipstick can be integrated in the ventilating fi lter for checking
the oil level. Therefore, a separate dipstick or an additional
opening in the tank is not required.
Oil separator (L1.0406, L1.0706, L1.0807):
An effective protection against splashing oil in mobile operation.
Double check valves (L1.0506, L1.0807):
By the use of double check valves, the exchange of air between
the tank and the environment can be considerably reduced,
whereby the ingress of dust is minimized and the lifetime of the
ventilating fi lter can be increased.
With the double check valve, an over-pressure can be created in
the tank in order to improve the suction conditions for the
pumps. A further advantage is the reduction of spray water
entry and the loss of oil through the ventilating fi lter.
Roll-over protection (L1.0506):
Ventilating fi lter with safety valve to prevent the hydraulic oil
spilling out should the machinery roll or tip over.
Ventilating Filter L1.0807
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Vandalism proof types (L1.0807):
Ventilating filters in patented vandalism proof version, please see
catalogue sheet 50.20.
Filling and ventilating filters in standard or patented vandalism
proof version, see catalogue sheet 50.30.
Maintenance
Ventilating filters should be changed at least every 1000
operating hours, or at minimum once a year.
Characteristics
Nominal flow rate
Up to 850 l/min (see Selction Chart, column 2)
The nominal flow rates indicated by ARGO-HYTOS are based on
the following criteria:
› Ventilating filters without double check valve:
∆p < 0,03 bar
› Ventilating filters with double check valve:
∆p < 0,1 bar for air IN
Connection
Threaded ports according to ISO 228, DIN 13 or DIN 20400.
Sizes see Selection Chart, column 6 (other port threads on
request).
Filter fineness
2 µm
Tested in a single pass test with ISO MTD
Hydraulic fluids
Mineral oil and biodegradable fluids
(HEES and HETG, see info sheet 00.20)
Temperature range hydraulic fluid
-30 °C ... +100 °C (temporary -40 °C ... +120 °C)
Temperature range environment
-30 °C ... +100 °C
Materials
Cap: Polyamide, GF reinforced
(L1.0506 Polyester, GK reinforced)
Base: Polyamide, GF reinforced
Dipstick: Stainless steel (1.4301)
Gaskets: NBR (FPM on request)
Filter media: Composite, multi-layer
Mounting position
No limitation, position on the tank see section Layout.
Ventilating filters with roll-over protection must be installed
vertically.
Diagrams
∆p-curves for complete filters in Selection Chart, column 3
D1
Pressure drop as a function of the flow volume
Air IN/OUT
∆p [bar]
Q [l/min]
Pressure drop as a function of the flow volume
Air IN/OUT
∆p [bar]
Q [l/min]
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D2
Pressure drop as a function of the flow volume
Air IN
∆p [bar]
Q [l/min]
Pressure drop as a function of the flow volume
Air OUT
∆p [bar]
Q [l/min]
D3
Pressure drop as a function of the flow volume
Air IN
∆p [bar]
Q [l/min]
Pressure drop as a function of the flow volume
Air OUT
∆p [bar]
Q [l/min]
Dx
Filter fineness curves in Selection Chart, column 4
Filtration ratio β as a function of particle size x tested in
a single pass test with ISO MTD
The abbreviation represents the following β-values resp.
finenesses:
2CL
› 2 µm Composite
99,5 % efficiency for particles of size 2 µm
tested in a single pass test with ISO MTD
For special applications, finenesses differing from these curves
are also available by using special composed filter media.
Filtration ratio β for particles > x µm
Particle size x [µm]
Efficiency [%]
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Selection Chart
* ∆p < 0,1 bar for air IN
Part No.
Nominal flow rate
Pressure drop see
diagram D/curve no.
Filter fineness see diagr. Dx
Filter surface
Connection A
Cracking pressure air IN
Cracking pressure air OUT
Dipstick measurement L1
Dipstick measurement L2
Dipstick measurement L3
Symbol
Weight
Remarks
l/min cm
2
bar bar mm mm mm g
1 2 3 4 5 6 7 8 9 10 11 12 13 14
L1.0406-12 120 D1/4 2CL 35 M18 x 1,5 - - - - - 1 25 -
L1.0406-21 25 D1/1 2CL 35 M18 x 1,5 - - - - - 1 25 with labyrinth oil separator
L1.0406-73 25 D1/1 2CL 35 M18 x 1,5 - - 75 70 55 1 30 with labyrinth oil separator
L1.0406-76 25 D1/1 2CL 35 M18 x 1,5 - - 80 75 60 1 30 with labyrinth oil separator
L1.0406-45 25 D1/1 2CL 35 M18 x 1,5 - - 95 90 45 1 35 with labyrinth oil separator
L1.0406-69 25 D1/1 2CL 35 M18 x 1,5 - - 100 95 80 1 35 with labyrinth oil separator
L1.0406-56 25 D1/1 2CL 35 M18 x 1,5 - - 130 125 100 1 35 with labyrinth oil separator
L1.0406-03 135 D1/5 2CL 35 M22 x 1,5 - - - - - 1 25 -
L1.0406-87 30 D1/2 2CL 35 M22 x 1,5 - - - - - 1 25 with labyrinth oil separator
L1.0406-60 30 D1/2 2CL 35 M22 x 1,5 - - 85 80 55 1 30 with labyrinth oil separator
L1.0406-79 135 D1/2 2CL 35 M22 x 1,5 - - 120 115 90 1 35 -
L1.0406-51 30 D1/2 2CL 35 M22 x 1,5 - - 130 125 - 1 35 with labyrinth oil separator
L1.0406-59 30 D1/2 2CL 35 M22 x 1,5 - - 130 125 100 1 35 with labyrinth oil separator
L1.0406-98 30 D1/2 2CL 35 M22 x 1,5 - - 180 175 150 1 40 with labyrinth oil separator
L1.0406-33 30 D1/2 2CL 35 M22 x 1,5 - - 250 235 215 1 40 with labyrinth oil separator
L1.0406-101 16 D1/3 2CL 6 M22 x 1,5 - - - - - 1 25 -
L1.0506-73 150* D2/3 2CL 35 M22 x 1,5 -0,03 0,20 - - - 2 55 -
L1.0506-91 150* D2/2 2CL 35 M22 x 1,5 -0,03 0,35 - - - 2 55 -
L1.0506-43 150* D2/1 2CL 35 M22 x 1,5 -0,03 1,60 - - - 2 55 -
L1.0506-185 10 D2/4 2CL 35 M22 x 1,5 - - - - - 3 60 with roll-over-protection
L1.0506-195 10 D2/4 2CL 35 Rd42 x 5,0 - - - - - 3 75 with roll-over-protection
L1.0706-03 250 D1/6 2CL 50 M30 x 1,5 - - - - - 1 50 -
L1.0706-02 250 D1/6 2CL 50 M42 x 2,0 - - - - - 1 50 -
L1.0706-07 250 D1/6 2CL 50 Rd42 x 5,0 - - - - - 1 60 with labyrinth oil separator
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Selection Chart
Remarks:
› The ventilating filters listed in this chart are standard filters. If modifications are required, e.g., with integrated dipstick, we kindly
ask for your request.
› Ventilating filters in Vandalism Proof design see catalogue sheet 50.20.
l/min cm
2
bar bar mm mm mm g
1 2 3 4 5 6 7 8 9 10 11 12 13 14
L1.0807-04 800 D1/8 2CL 203 M30 x 1,5 - - - - - 1 145 with labyrinth oil separator
L1.0807-11 800 D1/8 2CL 203 M30 x 1,5 - - - - - 1 140 with flat gasket
L1.0807-61 550* D3/3 2CL 203 M30 x 1,5 -0,03 0,35 - - - 2 160 -
L1.0807-07 650 D1/7 2CL 203 G¾ - - - - - 1 145 with labyrinth oil separator
L1.0807-21 650 D1/7 2CL 203 G¾ - - - - - 1 140 -
L1.0807-81 550* D3/4 2CL 203 G¾ -0,03 0,20 - - - 2 160 with flat gasket
L1.0807-71 550* D3/3 2CL 203 G¾ -0,03 0,35 - - - 2 160 with flat gasket
L1.0807-93 550* D3/2 2CL 203 G¾ -0,03 0,50 - - - 2 160 -
L1.0807-63 550* D3/1 2CL 203 G¾ -0,03 1,00 - - - 2 160 -
L1.0807-05 850 D1/9 2CL 203 M42 x 2,0 - - - - - 1 145 with labyrinth oil separator
L1.0807-31 850 D1/9 2CL 203 M42 x 2,0 - - - - - 1 140 -
L1.0807-91 550* D3/4 2CL 203 M42 x 2,0 -0,03 0,20 - - - 2 160 -
L1.0807-51 550* D3/3 2CL 203 M42 x 2,0 -0,03 0,35 - - - 2 160 -
L1.0807-06 850 D1/9 2CL 203 M60 x 2,0 - - - - - 1 150 with labyrinth oil separator
L1.0807-14 850 D1/9 2CL 203 M60 x 2,0 - - - - - 1 140 -
* ∆p < 0,1 bar for air IN
Part No.
Nominal flow rate
Pressure drop see
diagram D/curve no.
Filter fineness see diagr. Dx
Filter surface
Connection A
Cracking pressure air IN
Cracking pressure air OUT
Dipstick measurement L1
Dipstick measurement L2
Dipstick measurement L3
Symbol
Weight
Remarks
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Dimensions
ØD
E
F
H G
L3 L2 L1
ØC
ØB
A
L1.0406
ØD
E
F
G
H
ØC
A
ØB
L1.0506
ØD
E
F
H
G
A
ØC
ØB
L
1.
0
7
06
Recommended
port sizes
N
ØM
A
ØI
K
B
Spanner size
L1.0807
L1.0807
ØD
E
G
H
F
kB
ØC
A
Version with thread M42 x 2
eye R2,5 / hole Ø2
Fixing chain (length17 cm)
on request
ARGO-HYTOS Part No. S0.0512.1302
Measurements
Type A* B C D E F G H I K M N
L1.0406 M18 x 1,5, M22 x 1,5 31,5 16 37 33,5 7,5 16,5 13,5 - - as A 45°
L1.0506 M22 x 1,5
Rd42 x 5,0**
29
50
19,5
35,0
46
46
47
44
13,0
10,5
17,5
28,0
10,5
28,0
-
35,5
-
min. 28
as A
45
45°
45°
L1.0706 M30 x 1,5 51 20,5 66 26,5 6 35 18 - - as A 45°
M42 x 2,0 51 28 66 26,5 6 35 18 - - as A 45°
Rd42 x 5,0** 51 28 66 26,5 6 35 28 35,5 min. 28 45 45°
L1.0807 M30 x 1,5 AF47 27 80 50 7,5 17,5 13,5 - - as A 45°
G¾ AF33 24 80 50 7,5 17,5 13,5 - - as A 45°
M42 x 2,0 AF47 40 80 50 8 21 14 - - 48 45°
M60 x 2,0 AF47 56,4 80 52 11 18 15 - - as A 45°
* The thread dimensions do not exactly conform to the DIN ISO standard thread (functioning with the DIN ISO standard thread is guaranteed)
** Round thread according to DIN 20400, not conforming to thread depth standards (functioning with the DIN standard thread is guaranteed)
Symbols
1 2 3
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Layout
Quality Assurance
Quality management according to DIN EN ISO 9001
To ensure constant quality in production and operation, ARGO-HYTOS filter elements undergo strict controls and tests according to
the following ISO standards:
ISO 2941 Verification of collapse/burst pressure rating
ISO 2942 Verification of fabrication integrity (Bubble Point Test)
ISO 2943 Verification of material compatibility with fluids
ISO 3968 Evaluation of pressure drop versus flow characteristics
ISO 16889 Multi-Pass-Test (evaluation of filter fineness and dirt-holding capacity)
ISO 23181 Determination of resistance to flow fatigue using high viscosity fluid
Various quality controls during the production process guarantee the leakfree function and solidity of our filters.
Illustrations may sometimes differ from the original. ARGO-HYTOS is not responsible for any unintentional mistake in this specification sheet.
Sizes
The determining factor for selecting the size is the maximum
over / under pressure allowed in the container.
For versions without double check valves, the initial pressure
drop with a clean air filter should not exceed 0,03 bar.
For versions with double check valves, the initial pressure drop
for air IN with a clean air filter should not exceed 0,1 bar.
Filter fineness
In the ideal case, the fineness of the ventilating filter matches
the fineness of the system filter (see also CETOP RP 98 H).
By the use of filter fineness 2 CL the ingress of dust into the tank
is effectively reduced.
Mounting
The ventilating filter should be mounted in a low-dust area of
the machine and not in depressions in which water can collect.
For mobile use, the ventilating filter is to be mounted on the
tank such that neither splashing oil from the inside nor spray
water from the outside can reach the area of the ventilation
opening.
Double check valves
By the use of double check valves, the exchange of air between
the tank and the environment can be considerably reduced,
whereby the ingress of dust is minimized and the lifetime of the
ventilating filter is increased.
With the double check valve, a predefined level of pressure can
be created in the tank in order to improve the suction conditions
for the pumps.
The valve opening pressure required for the ventilating filter can
be approximately determined with the ideal gas equation
depending on the following system characteristics:
› differential volume
› volume of oil in the system
› volume of air in the tank
› operating temperatures
Calculation tool available.
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