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Tank Breather Filter
with Filler Strainer ELF
up to 5500 l/min
1. TECHNICAL
SPECIFICATIONS
1.1 FILTER HOUSING
Construction
Tank breather lters size 4, 10, 3 and
30 consist of an air lter top, which is
connected to the mounting ange by a
bayonet plate or a threaded boss, and
a ller strainer.
Sizes 5 and 52 consist of a two-part
threaded air lter top, with built-in oil
mist trap, one or two exchangeable
lter element(s) and a ller strainer.
Sizes 7 and 72 consist of a two-part
anged lter top, an exchangeable
lter element and a ller strainer.
1.2 FILTER ELEMENTS
Contamination retention capacities
in g
Paper
ELF 3 µm
4 2.9
10 2.9
3 6.2
30 6.2
7 26.1
72 52.2
5 85.1
52 170.2
The lter elements are made from phenolic resin
impregnated paper and cannot therefore be
cleaned.
1.4 SEALS
NBR (= Perbunan) on lter
NBR / Polyurethane on element
Cardboard on mounting ange
1.5 SPECIAL MODELS AND
ACCESSORIES
lockable model (only ELFL 3)
with check/bypass valve to support the
suction characteristics of the pump
Not 100% air-tight or leakage-free!
(only ELF 10, 3, 30, 5 and 52)
with anti-splash device
(only ELF 10, 3, 30, 7, 72)
with connection for a clogging indicator
(only ELF 7, 72)
with ller adapter for automotive
applications
(only ELF 7 and 72) - see Point 5.
1.6 SPARE PARTS
See Original Spare Parts List
1.7 CERTIFICATES AND APPROVALS
On request
1.8 COMPATIBILITY WITH
HYDRAULIC FLUIDS ISO 2943
The standard models are suitable for
use with mineral and lubrication oils.
For re-resistant and biodegradable
oils, see tables:
Fire-resistant uids
ELF HFA HFC HFD-R
4, 3, 5, 52 – – –
10, 30, 7, 72 –
1.3 FILTER SPECIFICATIONS
Temperature range -30 °C to +100 °C
Material of housing Steel, zinc-plated/plastic coated
(ELF 4, 3), steel (ELF 5, 52)
glass bre reinforced synthetic material
(ELF 10, 30, 7, 72)
Material of ller strainer Synthetic: ELF 10, 4, 30, 3, 7, 72
Metal: ELF 5, 52
Type of clogging indicator VMF (return line indicator)
Pressure setting of clogging indicator 0.6 bar K pressure gauge
0.035 bar UBM indicator
(others on request)
ELF 4 ELF 3 ELF 30 ELF 7 ELF 72 ELF 5 ELF 52ELF 10
E 7.404.1/03.12
ELFL 3
Biodegradable uids
ELF HTG HE HPG
PAG PRG
all
sizes + + 
+ suitable for all
contact our Technical Sales Department
– nicht einsetzbar
HTG vegetable oil based hydraulic
uids
HE ester-based synthetic hydraulic
uids
HPG polyglycol-based synthetic
hydraulic uids
PAG sub-group HPG:
polyalkylene glycol
PEG sub-group HPG:
polyethylene glycol
1.9 CHANGING INTERVALS
The lter elements or lters must be
replaced as frequently as the uid
lters, but at least every 12 months.
Symbol
air lter
strainer
HFA oil in water emulsion
(H2O content ≥ 80%)
HFC water polyglycol solution
(H2O content 35-55%)
HFD-R synthetic, water-free
phosphate ester
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ELF P 30 F 3 W 1 . X /-RV0.4
Filter type
ELF
ELFL (lockable)
Filter material
P Paper
Size
ELF 4, 10, 3, 30
ELFL 3
Type and size of connection
Filter size
4 10 3 30
F = Flange   
Filtration rating in µm
P 3 (absolute)
Type of clogging indicator
W without port, no clogging indicator
Type code (TKZ)
Filter size Code ∆p [bar]
ELF 4 1.X -
ELF 10 1.X -
ELF 3 1.X -
ELF 3.../-RV 4.X 0.4
ELF 3.../-RV 5.X 0.7
ELF 3.../-RV 6.X 0.2
ELF 3.../-RV 7.X 1.0
ELF 30 1.X -
Modication number
X the latest version is always supplied
Supplementary details
AS anti-splash without check/bypass valve (not ELF 3 & 4)
RV check/bypass valve (not ELF 4)
RV0.2
RV0.4
valve with relevant cracking pressure
RV0.7
(only ELF 10 and 30)
SO148 metal ller strainer, 200 mm long (only ELF 3 and 30)
SO175 metal ller strainer, 100 mm long (only ELF 3 and 30)
2. MODEL CODE (also order example)
2.1 COMPLETE FILTER
2.1.1 ELF 4, 10, 3, 30 and ELFL 3
ELF P 72 F 3 W 1 . X /-SO148
Filter type
ELF
Filter material
P Paper
Size
ELF 7, 72
Type and size of connection
Filter size
7 72
F = Flange DIN 24557/Pt 2 
Filtration rating in µm
P 3 (absolute)
Type of clogging indicator
W without port, no clogging indicator
K pressure gauge (measuring range
-1 to +0.6 bar) (not for ELF 72)
UBM visual/analogue vacuum gauge
with manual reset
(pressure setting: -0.035 bar)
Type code (TKZ)
0 for type UBM
1 for types W and K
Modication number
X the latest version is always supplied
Supplementary details
AS anti-splash without check/bypass valve
(only ELF 7, 72 without check/bypass valve)
SO148 metal ller strainer, 200 mm long
SO175 metal ller strainer, 100 mm long
SO394 ELF lter without strainer
2.1.2 ELF 7 and 72
ELF P 52 G 3 W 2 . X /-RV0.4
Filter type
ELF
Filter material
P Paper
BN Betamicron
®
Size
ELF 5, 52
Type and size of connection
Filter size
5 52
G1 1/2 
G = Thread G2 
G2 1/2 
G3 
Filtration rating in µm
P 3 (absolute)
BN 3 (absolute)
Type of clogging indicator
W without port, no clogging indicator
Type code (TKZ)
Code Connection
2.X G 2½
3.X G 3
4.X G 2
5.X G 1½
Modication number
X the latest version is always supplied
Supplementary details
RV0.4 check/bypass valve with 0.4 bar pressure setting
SO479 lter suitable for HFC uids
2.1.3 ELF 5 and 52
0005 L 003 P
Size
0005 for ELF 5, 52
0007 for ELF 7
0072 for ELF 72
Type
L
Filtration rating in µm
P 003
BN 003 (only for 0005)
Filter material
P Paper
BN Betamicron
®
Replacement elements cannot be ordered for ELF 4, 10, 3, 30 and
ELFL 3. These lters are only available complete!
2.2 REPLACEMENT ELEMENT
VMF 0.6 K . X
Type
VMF Return line indicator
Pressure setting
0.6 -1 to +0.6 bar
0.035 -0.035 bar
Type
(see Point 2.1.2)
Modication number
X the latest version is always supplied
2.3 REPLACEMENT CLOGGING INDICATOR
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3. FILTER CALCULATION /
SIZING
3.1 SINGLE PASS FILTRATION
PERFORMANCE DATA FOR AIR
FILTER ELEMENTS
The following separation values were
established under real-life simulated
conditions.
This means that the selected velocity
of the ow against the lter mesh-pack
was 20 cm/s and the contamination
added was 40 mg/m³ of ISO MTD test
dust.
Filtration Retention For particle Filter
rating value d... size material
3 µm d 80 0.74 µm
d 100 2.64 µm
Paper
The d 80 value refers to the particle
size which is ltered out at a rate
of 80% during the retention test.
The particle size determined by this
method is called the nominal ltration
rating of the air lter. The d 100
value therefore refers to the particle
size which is ltered out at a rate of
100% during the single pass test.
The particle size determined by this
method is called the absolute ltration
rating of the air lter.
Table of average dust concentrations
in real life:
Urban regions with 3-7 mg/m³ air
a low level of industry
General mechanical 9-23 mg/m³ air
engineering
Construction industry 8-35 mg/m³ air
(wheeled vehicles)
Construction industry 35-100 mg/m³ air
(tracked vehicles)
Heavy industry 50-70 mg/m³ air
3.2 DIFFERENTIAL PRESSURE
ACROSS BREATHER FILTER
The differential pressure (with clean
element) for the various lter sizes is
shown in the graphs under Point 3.4.
∆p [bar]
Q [l/min]
ELF 4
∆p [bar]
Q [l/min]
ELF 10
∆p [bar]
Q [l/min]
ELF 30
∆p [bar]
Q [l/min]
ELF 7
∆p [bar]
ELF 3
∆p [bar]
Q [l/min]
ELF 72
∆p [bar]
Q [l/min]
ELF 5
3.4 AIR FLOW RATE
3.3 SIZING GUIDELINES
The rate at which contamination enters
a hydraulic system can be considerably
reduced by using efcient tank breather
ltration.
CAUTION:
Incorrectly sized tank breather lters
can place additional strain on the
system and reduce the service life of
hydraulic lter elements.
For optimum sizing the following
should therefore be observed:
Filtration rating of breather lter ≤
ltration rating of hydraulic lter
Only use breather lters with an
absolute retention rate (d100≤ x µm;
x = given ltration rating)
Max. permitted initial pressure drop:
0.01 bar (with a clean lter element
and at calculated air ow)
Determining the calculated air ow:
Q
A
= f5 x Q
p
Q
A
=calculated air ow in l
N
/min
f5=factor for operating conditions
Q
p
=max. ow rate of the
hydraulic pump in l/min
Ambient conditions Factor f5
Low dust concentration;
lter tted with clogging indicator; 1-2
continuous monitoring of the lter
Average dust concentration;
lter without clogging indicator; 3-6
intermittent monitoring of the lter
High dust concentration;
lter without clogging indicator; 7-10
infrequent or no monitoring of the
lter
Q [l/min]
∆p [bar]
Q [l/min]
ELF 52
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ELF 3.../ELFL 3...
d1 76
d2 83
d3 49
d4 73
d5 60
d6 4.5
d7 8
h1 159
h2 96.5
h3 61.5
h4 21
h5 31
l1 67.5
l2 57.5
Weight 0.25 kg
ELF 10...
d1 54
d2 49
d3 28
d4 30
d5 41.3
d6 4.5
h1 158
h2 82
h3 76
h4 38
h5 6
Weight 0.08 kg
4. DIMENSIONS
ELF 4 ELF 10 ELF 3
ELFL 3
M 5x12 DIN 7500
Interface to DIN 24557/Part 2
ELF 4...
d1 44
d2 50
d3 28
d4 41.3
d5 30
d6 4.5
h1 135
h2 81.5
h3 53.5
Weight 0.20 kg
Interface Interface
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ELF 72...
d1 116
d2 120
d3 47
d6 M5
h1 236
h2 97
h3 139
h4 60
b1 44
Weight 0.58 kg
ELF 30...
d1 83
d2 83
d3 49
h1 185
h2 100
h3 85
h4 40
h5 5
Weight 0.23 kg
ELF 7...
d1 116
d2 120
d3 47
d4 73
d5 60
d6 M5
h1 181
h2 97
h3 84
h4 60
b1 44
Weight 0.38 kg
ELF 30 ELF 7 ELF 72
countersunk slotted
screw with M5x16
DIN 963
Interface to DIN 24557/Part 2Interface to DIN 24557/Part 2 Interface to DIN 24557/Part 2
countersunk
slotted screw M5x16
DIN 963
130
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NOTE
The information in this brochure relates to the operating conditions
and applications described.
For applications or operating conditions not described, please contact the relevant
technical department.
Subject to technical modications.
HYDAC FILTERTECHNIK GMBH
Industriegebiet
D-66280 Sulzbach/Saar, Germany
Tel.: 0 68 97 / 509-01
Fax: 0 68 97 / 509-300
Internet: www.hydac.com
E-mail: lter@hydac.com
ELF 5 ELF 52 This adapter can only be used on
ELF 7 and ELF 72 lters!
ange interface
to DIN 24557
5. FILLER ADAPTER
ELF 5... ELF 5...
/-RV
d1 177
...2.X G 2½ / 70.5
d8 / d3 ...3.X G 3 / 70.5
...4.X G 2 / 51.5
...5.X G 1½ / 41.5
h1 350 360
h2 240
h3 105 126
h6 25
h7 90
SW 90
...2.X 2.70 kg
Weight ...3.X 3.10 kg
...4.X 2.70 kg
...5.X 2.60 kg
ELF 52... ELF 52...
/-RV
d1 177
...2.X G 2½ / 70.5
d8 / d3 ...3.X G 3 / 70.5
...4.X G 2 / 51.5
...5.X G 1½ / 41.5
h1 416 438
h2 240
h3 176 198
h6 25
h7 125 112
SW 90
...2.X 3.10 kg
Weight ...3.X 3.50 kg
...4.X 3.10 kg
...5.X 3.00 kg
These ller adapters are available in
the following threaded connections:
Adapter ELF /-FA12 (G ½)
(Part No.: 00318597)
Adapter ELF /-FA34 (G ¾)
(Part No.: 01282563)
Adapter ELF /-FA1 (G 1)
(Part No.: 01274065)