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HD 790 · HD 990
In-line mounting · Operating pressure up to 630 bar · Nominal flow rate up to 1.000 l/min
High Pressure Filters – Worldline 400
Description
Application
In the high pressure circuits of hydraulic systems.
Performance features
Protection against wear:
By means of filter elements that, in full-flow filtration, meet even
the highest demands regarding cleanliness classes.
Protection against malfunction:
Through installation near to the control valves or other expensive
components. The specific determined flow rate guarantees a
closed by-pass valve even at ν ≤ 200 mm
2
/s (cold start condition).
Filter elements
Flow direction from outside to center. The star-shaped pleating
of the filter material results in:
› large filter surfaces
› low pressure drop
› high dirt-holding capacities
› long service life
Filter maintenance
By using a clogging indicator the correct moment for main-
tenance is stated and guarantees the optimum utilization of the
filter life.
Materials
Filter head: Spheroidal graphite cast iron (SGI)
Filter bowl: Steel
Housing cover: Spheroidal graphite cast iron (SGI)
Coating: Powder paint
Seals: NBR (FPM on request)
Filter media: EXAPOR
®
MAX 2 – inorganic multi-layer
microfibre web
Accessories
Electrical and/or optical clogging indicators are available –
optionally with one or two switching points resp. temperature
suppression.
Dimensions and technical data see catalogue sheet 60.30.
High Pressure Filter HD 990
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Characteristics
Operating pressure
0 ... 400 bar, min. 2 x 10
6
pressure cycles
Nominal pressure according to DIN 24550
0 ... 630 bar, min. 10
4
pressure cycles
Quasi-static operating pressure
Permissible pressures for other numbers of cycles
Number of cycles n
Operating pressure p [bar]
Nominal flow rate
Up to 1000 l/min (see Selection Chart, column 2)
The nominal flow rates indicated by ARGO-HYTOS are based on
the following features:
› closed by-pass valve at ν ≤ 200 mm
2
/s
› element service life > 1000 operating hours at an average
fluid contamination of 0.07 g per l/min flow volume
› flow velocity in the connection lines:
up to 250 bar ≤ 8 m/s
> 250 bar ≤ 12 m/s
Filter fineness
5 µm(c) ... 16 µm(c)
β-values according to ISO 16889
(see Selection Chart, column 4 and diagram Dx)
Dirt-holding capacity
Values in g test dust ISO MTD according to ISO 16889
(see Selection Chart, column 5)
Hydraulic fluids
Mineral oil and biodegradable fluids
(HEES and HETG, see info-sheet 00.20)
Temperature range
-30 °C ... +100 °C (temporary -40 °C ... +120 °C)
Viscosity at nominal flow rate
› at operating temperature: ν < 60 mm
2
/s
› as starting viscosity: ν
max
= 1200 mm
2
/s
› at initial operation:
The recommended starting viscosity can be read from the
diagram D (pressure drop as a function of the kinematic
viscosity) as follows: Find the 70 % ∆p of the cracking
pressure of the by-pass valve on the vertical axis. Draw a
horizontal line so that it intersects the ∆p curve at a point.
Read this point on the horizontal axis for the viscosity.
Mounting position
Preferably vertical. The filter head can be mounted in either the
uppermost position or the inverse as required.
Connection
SAE-flange (6000 psi).
Sizes see Selection Chart, column 6 (other connections on
request).
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Diagrams
∆p-curves for complete filters in Selection Chart, column 3
D1
Pressure drop as a function of the
flow volume at ν = 35 mm
2
/s (0 = casing empty)
0
1,0
0,5
1,5
HD 790
1
4
2
5
6
0
3
200 400 600 800 1000
∆p [bar]
Q [l/min]
Pressure drop as a function of the
kinematic viscosity at nominal flow
0
2
4
6
8
10
12
1+3
2
5
4+6
200 400 600
800
1000
∆p [bar]
ν [mm
2
/s]
D2
Pressure drop as a function of the
flow volume at ν = 35 mm
2
/s (0 = casing empty)
0
1,0
0,5
1,5
HD 990
1
4+5
2
6
0
3
200 400 600 800 1000
∆p [bar]
Q [l/min]
Pressure drop as a function of the
kinematic viscosity at nominal flow
0
2
4
6
8
10
12
1
3
2
5
6
4
200 400 600
800
1000
∆p [bar]
ν [mm
2
/s]
Dx
Filter fineness curves in Selection Chart, column 4
Filtration ratio β as a function of particle size x obtained
by the Multi-Pass Test according to ISO 16889
The abbreviations represent the following β-values resp.
finenesses:
For EXAPOR
®
MAX2 and Paper elements:
5EX2 = β
5 (c)
= 200 EXAPOR
®
MAX 2
7EX2 = β
7 (c)
= 200 EXAPOR
®
MAX 2
10EX2 = β
10 (c)
= 200 EXAPOR
®
MAX 2
16EX2 = β
16 (c)
= 200 EXAPOR
®
MAX 2
30P = β
30 (c)
= 200 Paper
Based on the structure of the filter media of the 30P paper
elements, deviations from the printed curves are quite probable.
For screen elements:
40S = screen material with mesh size 40 µm
60S = screen material with mesh size 60 µm
100S = screen material with mesh size 100 µm
Tolerances for mesh size according to DIN 4189
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] (for particles larger
than the given particle size x)
Efficiency [%]
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Selection Charts
Optical or electrical indicators are available to monitor the clogging condition of the element. If the indicator should be already
mounted onto the filter head use the abbreviation “M” behind the part number of the indicator. The printed order acknowledge-
ments show both items separately.
Order example: The filter HD 790-156 has to be supplied with optical clogging indicator – response pressure 5,0 bar
Order description: HD 790-156 / DG 042-02 M
Part No. (Basic unit) Mounted
Clogging indicator
For the appropriate clogging indicators see catalogue sheet 60.30.
Remarks:
› Filter versions without by-pass valves must always be equipped with a clogging indicator.
› The filters listed in this chart are standard filters. Other designs available on request.
*
Element differential pressure stable up to 160 bar, clogging indicator is obligatory
Part No.
Nominal flow rate
Pressure drop see
diagram
D/
curve no.
Filter fineness see diagr.
Dx
Dirt-holding capacity
Connection A/B
Cracking pressure of by-pass
Symbol
Replacement filter element
Part No.
Weight
Clogging indicator
Remarks
l/min g bar kg
1 2 3 4 5 6 7 8 9 10 11 12
HD 790-189 320 D1/1 5EX2 58 SAE 2 - 7 V3.1040-13* 47 optional -
HD 790-159 440 D1/2 5EX2 63 SAE 2 7 4 V3.1040-03 46 optional -
HD 790-186 540 D1/3 10EX2 71 SAE 2 - 7 V3.1040-16* 47 optional -
HD 790-156 640 D1/4 10EX2 88 SAE 2 7 4 V3.1040-06 46 optional -
HD 790-188 660 D1/5 16EX2 72 SAE 2 - 7 V3.1040-18* 47 optional -
HD 790-158 750 D1/6 16EX2 89 SAE 2 7 4 V3.1040-08 46 optional -
HD 990-189 460 D2/1 5EX2 85 SAE 2 - 7 V3.1060-13* 56 optional -
HD 990-159 570 D2/2 5EX2 95 SAE 2 7 4 V3.1060-03 55 optional -
HD 990-186 680 D2/3 10EX2 110 SAE 2 - 7 V3.1060-16* 56 optional -
HD 990-156 780 D2/4 10EX2 130 SAE 2 7 4 V3.1060-06 55 optional -
HD 990-188 870 D2/5 16EX2 110 SAE 2 - 7 V3.1060-18* 56 optional -
HD 990-158 1000 D2/6 16EX2 140 SAE 2 7 4 V3.1060-08 55 optional -
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Dimensions
A
G
B
P
1
P
2
R
S
P
Q
E
O
M
C
F
D
ØH
L
I
K
T
U
N
V
Clogging indicator
optional: Pressure holes
plugged with screws
V
ersion with electrical clogging indicator DG 041
Oil drain plug
M20 x 1,5
(AF 10)
Minimum distance
from ferromagnetic
parts: 7 mm
Measurements
Type A/B C D E F G H I K L M
Ø/depth
N
Ø/depth
O P Q R S T U V
HD 790 SAE 2 44,4 495 96,6 96 184 140 430 AF36 36 M20/32 M12/20 58 91 89 95 93 122 102 13
HD 990 SAE 2 44,4 700 96,6 96 184 140 640 AF36 36 M20/32 M12/20 58 91 89 95 93 122 102 13
Symbols
1 2 3 4 5 6 7
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Spare Parts
5
6
1
4
3
2
Pos. Designation Part No.
1 Housing cover
(with Pos. 2 and 3)
HD 990.1900
2 Back-ring HD 256.0104
3 O-ring 104,37 x 3,53 N007.1044S
4 Filter element see Chart / col. 9
5 Hexagonal head screw M4 x 8
ISO 4017-8.8
11385800
6 Bonded seal 4,1 x 7,2 x 1 12504600
The functions of the complete filters, as well as the outstanding
features of the filter elements assured by ARGO-HYTOS, can
only be guaranteed if original ARGO-HYTOS spare parts are
used.
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
Before release into the series production the filter casing is tested for fatigue strength in our pressure pulse test rig.
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.
