HF 735 series
In line high pressure filters
Videoconferecing IP
www.ikron.it
E-mail: info@ikron.it
THE IMPORTANCE OF AN EFFICIENT FILTRATION
The main cause of anomalies in hydraulic systems has to
be attributed to the presence of contaminants in the fluid.
The nature of the contaminant may be: gaseous, namely
air mixed with the fluid; fluid, it depends on water
penetrating the fluid; solid, therefore particles of various
origins and dimensions.
Customers who operate equipments are always focused
on obtaining the best possible performance, lower
energy consumptions and greater respect for the
environment.
These characteristics can be attained by using top
quality components in the hydraulic system for
generating and regulating the fluid power, which are also
more sensitive to the presence of contaminants in the
fluid.
Starting from these requirements, we understand how
important and fundamental it is to prevent the presence
of air and water from mixing in the fluid tank by using
dedicated solutions.
It is also crucial to limit the presence of solid particles in
the hydraulic circuit through a suitable filtering system,
which is indispensable to maintain the project
requirements of the system over time and to keep
running costs low.
The correct choice of a filter and its optimum position in
the hydraulic system requires the same care and
experience needed to choose all the other components.
The use of filters with larger filtering surfaces reduces, at
equal flow rates, the superficial contaminant load and
therefore the filter's life is extended proportionally.
To maintain the maximum efficiency of the system, the
filters must have a clogging indicator showing the
differential pressure on the filtering cartridge and to
immediately point out when the cartridge needs
replacing in order to prevent the by-pass valve from
opening.
The following factors should be analysed when choosing the ideal filter:
Ø
The filtration degree required to protect the most sensitive component from contamination
Ø
The points of the circuit in which the filters have to be installed
Ø
The working pressure of the system
Ø
The maximum flow rate and the type of fluid to be filtered
Ø
The duty cycle
Ø
The retention efficiency of the filtering cartridge
Ø
The contaminant accumulation capacity of the filtering cartridge
Ø
The working ambient temperature
Each filter used generates a pressure drop that increases continuously as time goes by. This pressure drop represents
an efficiency index of the filter itself.
When the hydraulic system is about to be assembled, all the components must be perfectly clean and the fluid has to be
added through a device complete with a filter.
During the test phase, it is advisable to run some work cycles at low pressure in order to create the best possible
conditions for all the components.
HF 735
ICAT022-002 002 1
TECHNICAL CHARACTERISTICS
The filters of the HF735 series are connected to the pres
-
sure line of the circuit and they protect the system’s com
-
ponents against contaminant particles.
The standard filters are supplied with by-pass valve
calibrated at 87 psi (6 bar).
l
Flow up to 40 US gpm (150 l/min)
l
Maximum working pressure 4640 psi (320 bar)
l
High efficiency multilayer system
l
Direct mounting on manifold
For applications where the maximum protection of the
system is requested, such as servo drives or proportional
controls, the filters are equipped with highly resistant
filtering elements (versions “HC”) and do not have a
by-pass valve.
MATERIALS
Head
Spheroidal cast iron
GS 450-10 UNI ISO 1083
Bowl Extruded steel
Seals Buna - Viton
End cap Zinc plated steel
Inner tube Zinc plated steel
Filter media Inorganic micro-fibre glass
FLUID COMPATIBILITY
Conforming to ISO 2943 (Norm ISO 6743/4)
Oil mineral (1) HH - HL - HM - HR - HV - HG
Water emulsion (1) HFAE - HFAS
Water glycol (1) HFC
Syntetic fluid (2) HS - HFDR - HFDU - HFDS
(1) With Buna seals
(2) With Viton seals
FLOW
Flow max. 40 US gpm (150 l/min)
PRESSURE
Working pressure 4640 psi (320 bar)
Testing pressure 6960 psi (480 bar)
Burst pressure 9280 psi (640 bar)
Element collapse pressure
rating (conforming to ISO 2941)
290 psi (20 bar) (version LC)
3045 psi (210 bar) (version HC)
BY-PASS VALVE
By-pass setting 87 psi (6 bar)
DEGREE OF FILTRATION
Multi-pass test conforming to ISO 16889 (regulation in force)
Contaminant ISO MTD - final Dp87psi(6bar)
Code Degree of
filtration
Ratio
ß
x(c)
Percentage of
efficiency
FG003
5 mmß
5(c)
³ 200
99,5 %
FG006
7 mmß
7(c)
³ 200
99,5 %
FG010
10 mmß
10(c)
³ 200
99,5 %
FG025
21 mmß
21(c)
³ 200
99,5 %
Multi-pass test conforming to ISO 4572. (previous regulation)
Contaminant ACFTD - final Dp87psi(6bar)
Code Degree of
filtration
Ratio
ß
x
Percentage of
efficiency
FG003
3 mmß
3
³ 200
99,5 %
FG006
6 mmß
6
³ 200
99,5 %
FG010
10 mmß
10
³ 200
99,5 %
FG025
25 mmß
25
³ 200
99,5 %
INDICATORS (3)
Visual differential indicator
Visual electrical differential indicator
Visual electrical differential indicator with thermostat
(3) Characteristics and dimensions pag. 11
03/10.2015
OPERATING TEMPERATURE
With Buna seals
-22 ¸ 195 °F (-30 ¸ 90 °C)
With Viton seals
-4 ¸ 230 °F (-20 ¸ 110 °C)
ENDURANCE STRENGTH
1.000.000 cycle
0 ¸ 4640 psi (0 ¸ 320 bar)
HF 735
2 002 ICAT022-002
SIZING – PRESSURE DROP
2) The pressure drop of the element is proportional with the oil density and kinematic viscosity, therefore for oil with
density different to 7.29 lb/gal (0,856 kg/dm
3
) and kinematic viscosity different to 120 SSU (30 cSt) the value of Dp in the
element will be:
Now you sum the values of the pressure drop of the housing to the value of the pressure drop of the filtering element,
always making sure the total Dp does not exceed the pressure limit of 11 psi (0,75 bar).
The total pressure drop of the filter is calculated by summing the pressure drop value in the housing to that in the filtering
element.
Total Dp =Dp in housing + Dp in element
In the filters of series HF735 in normal working conditions, the total Dp must not be more than 11 psi (0,75 bar) whe
-
reas, for use in harsh conditions, it must be within 14.5 ¸ 22 psi (1 ¸ 1,5 bar).
To establish the values of pressure drop involved, the following pages provide some diagrams with curves referred to
the use of mineral oils ISO VG46 with kinematic viscosity of 120 SSU (30 cSt) and density of 7.29 lb/gal (0,856 kg/dm
3
).
Example calculation
Filter HF735-20.106-AS-FG010-LC-B60-GD-B-DD-G
Flow rate= 12 US gpm (45 l/min)
Kinematic viscosity: 120 SSU (30 cSt)
Oil density : 7.29 lb/gal (0,856 kg/dm
3
)
Filtering degree: 10 mm
Data obtained from the diagrams:
Dp in housing = 2.00 psi (0,14 bar) (page 4)
Dp in element = 7.25 psi (0,50 bar) (page 5)
Total Dp = 2.00 + 7.25 = 9.25 psi (0,64 bar) (Dp is lower than maximum value admitted – therefore sizing is correct).
If oil with different kinematic viscosity and different density is used, the values obtained from the diagrams shall be
re-calculated considering the following indications:
1) The pressure drop of the housing is proportional with the oil density, therefore for oil with density different to 7.29
lb/gal (0,856 kg/dm
3
) the value of the Dp in the head-bowl will be:
03/10.2015
Or
Or
Dp in housing =
Dp of diagram (bar)
• Oil density ( kg/dm
3
)
[bar]
0,856 (kg/dm
3
)
Dp in housing =
Dp of diagram (psi)
• Oil density ( lb/gal)
[psi]
7.29 (lb/gal)
Dp element = Dp of diagram (bar)
•
Oil density (kg/dm
3
)
•
Oil viscosity (cSt)
[bar]
0,856 (kg/dm
3
)30(cSt)
Dp element = Dp of diagram (psi)
•
Oil density (lb/gal)
•
Oil viscosity (SSU)
[psi]
7.29 (lb/gal) 120 (SSU)
HF 735
ICAT022-002 002 3
The pressure drop values are directly proportional with
the specific weight of the fluid and do not affect the
establishment of the total pressure drop of the complete
filter.
PRESSURE DROP CURVES THROUGH THE BY-PASS VALVES
The curves are obtained in the following conditions:
Mineral oil type ISO VG46
Kinematic viscosity 120 SSU (30 cSt)
Density 7.29 lb/gal (0,856 kg/dm
3
).
03/10.2015
HF735-20 HF735-30
0
100
(26.4)
4,0
(58.0)
8,0
(116.0)
12,0
(174.0)
16,0
(232.0)
20,0
(290.0)
0
20
(5.3)
40
(10.6)
60
(15.9)
80
(21.1)
120
(31.7)
0
100
(26.4)
4,0
(58.0)
8,0
(116.0)
12,0
(174.0)
16,0
(232.0)
20,0
(290.0)
0
20
(5.3)
40
(10.6)
60
(15.9)
80
(21.1)
120
(31.7)
HF 735
4 002 ICAT022-002
PRESSURE DROP CURVES THROUGH THE HOUSING
The curves are obtained in the following conditions:
Mineral oil type ISO VG46
Kinematic viscosity 120 SSU (30 cSt)
Density 7.29 lb/gal (0,856 kg/dm
3
).
03/10.2015
HF 735-20 735-30
0
100
(26.4)
0,2
(2.90)
0,4
(5.80)
0,6
(8.70)
0,8
(11.60)
0
20
(5.3)
40
(10.6)
60
(15.9)
80
(21.1)
120
(31.7)
0
0,2
(2.90)
0,4
(5.80)
0,6
(8.70)
0,8
(11.60)
0
20
(5.3)
40
(10.6)
60
(15.9)
80
(21.1)
100
(26.4)
120
(31.7)
140
(37.0)
160
(42.3)
180
(47.6)
200
(52.8)
HF 735
ICAT022-002 002 5
PRESSURE DROP CURVES THROUGH THE ELEMENT HEK85-20
0
0,5
(7.25)
1,0
(14.50)
1,5
(21.75)
2,0
(29.00)
2,5
(36.25)
3,0
(43.50)
0
20
(5.3)
40
(10.6)
60
(15.9)
80
(21.1)
100
(26.4)
120
(31.7)
140
(37.0)
160
(42.3)
(
1
)
(
2
)
(3)
0
0,5
(7.25)
1,0
(14.50)
1,5
(21.75)
2,0
(29.00)
2,5
(36.25)
3,0
(43.50)
0
20
(5.3)
40
(10.6)
60
(15.9)
80
(21.1)
100
(26.4)
120
(31.7)
140
(37.0)
160
(42.3)
(
1
)
(
2
)
(
3
)
0
0,5
(7.25)
1,0
(14.50)
1,5
(21.75)
2,0
(29.00)
2,5
(36.25)
3,0
(43.50)
0
20
(5.3)
40
(10.6)
60
(15.9)
80
(21.1)
100
(26.4)
120
(31.7)
140
(37.0)
160
(42.3)
(
1
)
(
2
)
(3)
FG003 FG006
FG010 FG025
The curves are obtained in the following conditions:
Mineral oil type ISO VG46
Kinematic viscosity 120 SSU (30 cSt)
Density 7.29 lb/gal (0,856 kg/dm
3
).
(1) HEK85-20.080
(2) HEK85-20.106
(3) HEK85-20.203
03/10.2015
0
0,5
(7.25)
1,0
(14.50)
1,5
(21.75)
2,0
(29.00)
2,5
(36.25)
3,0
(43.50)
0
20
(5.3)
40
(10.6)
60
(15.9)
80
(21.1)
100
(26.4)
120
(31.7)
140
(37.0)
160
(42.3)
(
1
)
(
2
)
(3)
HF 735
6 002 ICAT022-002
FG003 FG006
FG010 FG025
The curves are obtained in the following conditions:
Mineral oil type ISO VG46
Kinematic viscosity 120 SSU (30 cSt)
Density 7.29 lb/gal (0,856 kg/dm
3
).
(1) HEK85-30.115
(2) HEK85-30.223
03/10.2015
PRESSURE DROP CURVES THROUGH THE ELEMENT HEK85-30
(2)
(1)
0
100
(26.4)
0,5
(7.25)
1,0
(14.50)
1,5
(21.75)
2,0
(29.00)
2,5
(36.25)
3,0
(43.50)
0
20
(5.3)
40
(10.6)
60
(15.9)
80
(21.1)
120
(31.7)
140
(37.0)
160
(42.3)
180
(47.6)
200
(52.8)
(2)
(1)
0
100
(26.4)
0,5
(7.25)
1,0
(14.50)
1,5
(21.75)
2,0
(29.00)
2,5
(36.25)
3,0
(43.50)
0
20
(5.3)
40
(10.6)
60
(15.9)
80
(21.1)
120
(31.7)
140
(37.0)
160
(42.3)
180
(47.6)
200
(52.8)
(2)
(1)
0
100
(26.4)
0,5
(7.25)
1,0
(14.50)
1,5
(21.75)
2,0
(29.00)
2,5
(36.25)
3,0
(43.50)
0
20
(5.3)
40
(10.6)
60
(15.9)
80
(21.1)
120
(31.7)
140
(37.0)
160
(42.3)
180
(47.6)
200
(52.8)
(2)
(1)
0
100
(26.4)
0,5
(7.25)
1,0
(14.50)
1,5
(21.75)
2,0
(29.00)
2,5
(36.25)
3,0
(43.50)
0
20
(5.3)
40
(10.6)
60
(15.9)
80
(21.1)
120
(31.7)
140
(37.0)
160
(42.3)
180
(47.6)
200
(52.8)
HF 735
ICAT022-002 002 7
03/10.2015
FLOW
Degree of filtration
FG003 FG006 FG010 FG025
Filter type
Flow
Dp= 11 psi (0,75 bar)
US gpm
(l/min)
HF735-20.080
6.6
(25)
7.9
(30)
9.2
(35)
11.9
(45)
HF735-20.106
7.9
(30)
10.6
(40)
11.9
(45)
15.9
(60)
HF735-20.203
13.2
(50)
14.5
(55)
15.9
(60)
21.1
(80)
HF735-30.115
15.9
(60)
18.4
(70)
22.4
(85)
29.1
(110)
HF735-30.223
27.7
(105)
31.7
(120)
35.7
(135)
39.6
(150)
HF 735
8 002 ICAT022-003
HF735-20 DIMENSIONS
03/10.2015
Filter type
Weight A
kg
(lbs)
mm
(in)
HF735-20.080
3,7
(8.15)
200
(7.8740)
HF735-20.106
4,1
(9.03)
226
(8.8976)
HF735-20.203
5,6
(12.34)
323
(12.7165)
Indicator port
By-pass
By-pass and
no return valve
Without by-pass
Without by-pass
with no return valve
Without by-pass
with reverse flow
B60 B6N
B00 B0N B0R
By-pass and
reverse flow valve
B6R
HF 735
ICAT022-003 002 9
HF 735-30 DIMENSIONS
03/10.2015
Filter type
Weight A
kg
(lbs)
mm
(in)
HF735-30.115
6,0
(13.22)
255
(10.0393)
HF735-30.223
7,8
(17.20)
363
(14.2913)
Indicator port
By-pass
By-pass and
no return valve
Without by-pass
Without by-pass
with no return valve
Without by-pass
with reverse flow
B60 B6N
B00 B0N B0R
By-pass and
reverse flow valve
B6R
HF 735
10 002 ICAT022-003
ELEMENTS DIMENSIONS FOR HF735
Filtering elements with Dp - collapse pressure of 3046 psi (210 bar) are also available (please consult our technical
department).
Technical data for (MS) version elements are available on request.
03/10.2015
Element type
ØA ØB C
Filtering
surface (AS)
Dirt holding capacity
(ISO MTD)
Dp = 72.5 psi (5 bar)
FG003 FG006 FG010 FG025
mm
(in)
mm
(in)
mm
(in)
cm
2
(in
2
)
gr
(lbs)
gr
(lbs)
gr
(lbs)
gr
(lbs)
HEK85-20.080
25,5
(1.0039)
46,5
(1.8307)
87
(3.4252)
415
(64.3251)
2,3
(0.0051)
3,0
(0.0066)
3,3
(0.0073)
4,8
(0.0106)
HEK85-20.106
113
(4.4488)
560
(86.8002)
3,1
(0.0069)
4,0
(0.0089)
4,5
(0.0099)
6,5
(0.0143)
HEK85-20.203
210
(8.2677)
1103
(170.9653)
6,2
(0.0136)
7,9
(0.0175)
8,8
(0.0195)
12,8
(0.0282)
HEK85-30.115
27,5
(1.0827)
54,5
(2.1457)
122
(4.8031)
908
(140.7403)
5,1
(0.0112)
6,5
(0.0144)
7,3
(0.0160)
10,5
(0.0232)
HEK85-30.223
230
(9.0551)
1808
(280.2405)
10,1
(0.0223)
13,0
(0.0287)
14,5
(0.0319)
21,0
(0.0462)
HF 735
ICAT022-003 002 11
INDICATORS
VISUAL ELECTRICAL DIFFERENTIAL
Code: U
VISUAL DIFFERENTIAL
Code: H
VISUAL ELECTRICAL DIFFERENTIAL WITH
THERMOSTAT
Code: W
Differential pressure setting
116 psi (8 bar) without
by-pass
72.5 psi (5 bar) with by-pass
Max. working voltage
250 VAC
30 VCC
Max. working current
3 A (resistivity)
3 A (inductive)
Protection class IP 66
Min. function temperature 86 °F (30 °C)
132
N.C.
N.O.
132
N.C.
N.O.
T=30°C
03/10.2015
Differential pressure setting
116 psi (8 bar) without
by-pass
72.5 psi (5 bar) with by-pass
Differential pressure setting
116 psi (8 bar) without
by-pass
72.5 psi (5 bar) with by-pass
Max. working voltage
250 VAC
30 VCC
Max. working current
3 A (resistivity)
3 A (inductive)
Protection class IP 66
HF 735
12 002 ICAT022-004
ASSEMBLY
Once you have checked the integrity of the filter inside its
package, proceed as follows:
A Take the protection caps off the oil inlet and outlet.
B Secure the filter to the attachment device via the flange's
holes of the head (pos.6), checking the flow direction,
which is determined by the IN and OUT incisions.
C If the clogging indicator (pos.9 - 10 - 11) is immediately
mounted in the filter, take the protection cap off and screw
the indicator in the dedicated seat, then tighten to a
tightening torque of 531 lbf in (60 Nm). If the indicator is
electric, complete the required connections.
D Start the circuit for a few minutes.
E Make sure there are no leaks.
Pos. Description
1 Filter bowl
2 Seal
3 Anti-extrusion ring
4 Sealing O-Ring
5 Filtering element
6 Filter head
7 By-pass valve
8 Sealing cap
9 Visual differential indicator
10 Visual electrical differential indicator
11 Visual electrical differential indicator
with thermostat
12 Inlet and outlet ports' O-rings.
When ordering spare parts, always specify the
reference number, the filter code and quantity.
Example: Spare part pos. 4 - HHP41879 - Qty 2
ASSEMBLY AND REPLACING ELEMENT INSTRUCTIONS
REPLACING ELEMENT
Once the working hours limit indicated in the maintenance
instructions of the system is reached, or when the clogging
indicators point out the limit pressure drop created inside the
filter, the cartridge must be replaced, remembering that this
procedure involves the drainage of hydraulic oil and therefore
you need to prepare suitable containers to collect the oil.
Proceed as follows:
A Stop the system in “Machine stopped” status.
B Secure any shut-off valves on the hydraulic circuit.
C Unscrew the filter container (pos.1).
D Remove the clogged filtering cartridge (pos.5), making
sure no residual particles have settled on the bottom
(pos.1).
E Make sure the seal, the O-ring (pos.2 - 4) and the anti-ex
-
trusion ring (pos.3) are not damaged, otherwise replace
them and consequently position the new ones correctly.
F Insert the new filtering cartridge, lubricating the sealing
O-ring beforehand.
G Screw the container tight (pos.1) making sure the threading
is screwed correctly. Tighten to a tightening torque as in
-
dicated on pages 8, 9.
H Start the machine for a few minutes.
I Make sure there are no leaks.
03/10.2015
HF 735
ICAT022-005 002 13
03/10.2015
HOW TO ORDER A COMPLETE FILTER
Standard
On request
1
Filter type CODE
See table page 8 and page 9
HF735-..
2
Filtering surface CODE
Standard
AS
Multilayer
MS
3
Degree of filtration CODE
3 [mm] Micro-fibre glass
FG003
6[m m] Micro-fibre glass
FG006
10 [mm] Micro-fibre glass
FG010
25 [mm] Micro-fibre glass
FG025
4
Dp - Collapse pressure
CODE
290 [psi]; (20 [bar])
LC
3045 [psi]; (210 [bar])
HC
5
Valves CODE
By-pass setting 87 [psi] (6 [bar])
B60
By-pass setting 87 [psi] (6 [bar]) and no re-
turne valve
B6N
By-pass setting 87 [psi] (6 [bar] and reverse
flow valve
B6R
Without
B00
Without by-pass, with no returne valve
B0N
Without by-pass, with reverse flow
B0R
6
Seals CODE
Buna
B
Viton
V
7
Indicator ports CODE
Without
XN
Arranged
XA
Arranged with plug
DD
8
Indicator CODE
Without
G
Visual differential indicator
H
Visual electrical differential indicator
U
Visual electical differential indicator with
thermostat
W
12345678
HF735 - 20.080 - AS - FG010 - LC - B6 - B - DD - G
HF 735
14 002 ICAT022-005
03/10.2015
HOW TO ORDER A REPLACEMENT ELEMENT
1
Element type CODE
See table pag. 10
HEK85-..
2
Filtering surface CODE
Standard
AS
Multilayer
MS
3
Degree of filtration CODE
3 [mm] Micro-fibre glass
FG003
6[m m] Micro-fibre glass
FG006
10 [mm] Micro-fibre glass
FG010
25 [mm] Micro-fibre glass
FG025
4
Dp collapse pressure
CODE
290 [psi] (20 [bar]) LC
3045 [psi] (210 [bar])
HC
5
Seals CODE
Buna
B
Viton
V
Standard
On request
1
2345
HEK85 - 20.080 - AS - FG010 - LC - B
HF 735
ICAT022-005 002 15
NOTES:
03/10.2015
HF 735
16 002 ICAT022-005
03/10.2015
NOTES:
Full range of filters
for all hydraulic circuits
Truck
Market
Material
Handling
Industrial
Building &
construction
Agriculture
Suction filters
Tank mounted
return line filters
Tank mounted return
and suction line filters
In line filters Spin-On
In line medium and high
pressure filters
Accessories
HF 410
HF 412
HF 431
HF 434
HF 437
HF 502
HF 508
HF 620
HF 690
HF 705
HF 710
Filler breathers
Air filters
Level and temperature gauges
Pressure gauges
Clogging indicators
HF 547
HF 554
HF 570
HF 575
HF 578
HF 625
HF 650
HF 725
HF 735
HF 745
HF 748
HF 760
HF 761
Pressure/vacuum gauges
HF 525
IKRON S.r.l.
Via Prampolini, 2 - 43044 Lemignano di Collecchio - Parma - Italy
Tel.: + 39 0521 304911 - Fax: + 39 0521 304900
Videoconferecing IP
www.ikron.it
E-mail: info@ikron.it
Videoconferecing IP
www.ikron.it
E-mail: info@ikron.it
HF 735 03 T A Edition: 03/10.2015 Replaces: HF 735 02 TA
