PRESSURE: Max operating: up to 420 bar

Fatigue pressure test, over 10

cycles from

zero to max working pressure.

Burst: over 1260 bar

MATERIALS: Bowl: carbon steel

Seal: NBR (FKM on request)

KH420 SERIES

High pressure filter kit

FILTREC KH420 series is specifically designed to be screwed

directly on the control block.

Flow rate is up 500 l/min with a wide range of bowls for a

best tailored solution.

HOUSING

tested according to NFPA T3.10.5.1, ISO 10771,

ISO 3968

FILTER MEDIA: Fibreglass: G01 - G03 - G06 - G10

G15 - G25

COLLAPSE

PRESSURE:

21 bar

With bypass

210 bar

Without bypass

ELEMENT

tested according to ISO 11170, 2941, 2942, 2943, 3724,

3968,16889, 16908, 23181

HYDRAULIC DIVISION

TEMPERATURE

RANGE:

-30°C +100°C

FLUID

COMPATIBILITY:

Full with HH-HL-HM-HV

HETG-HEES (acc. to ISO 6743/4).

For use with other fluid please

contact Filtrec Customer Service

(info@filtrec.it).

KH420 SERIES 1/7

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OVERALL DIMENSIONS

KH420 D1 08

D1 08 WEIGHT: 1 Kg

KH420 SERIES 2/7

CONTROL BLOCK MACHINING

REFERENCE DRAWING

NOMINAL SIZE

MODEL D1 D2 D3 D4 D5 D6 D7 H1 H2 H3 H4 H5 H6 H7 RR B C WEIGHT

D1 25 70 65,5 M70x1,5 23,7 19 70,5 70,3 69 110 41 31,7 26,2 16 2 4 30° 1x45° 1,1 Kg

D1 20 70 65,5 M70x1,5 23,7 19 70,5 70,3 110 110 41 31,7 26,2 16 2 4 30° 1x45° 1,8 Kg

D1 24 70 65,5 M70x1,5 23,7 19 70,5 70,3 153 110 41 31,7 26,2 16 2 4 30° 1x45° 2,1 Kg

D1 21 70 65,5 M70x1,5 23,7 19 70,5 70,3 203 110 41 31,7 26,2 16 2 4 30° 1x45° 2,7 Kg

D1 26 70 65,5 M70x1,5 23,7 19 70,5 70,3 247 110 41 31,7 26,2 16 2 4 30° 1x45° 3,2 Kg

D1 35 90 81,5 M85x1,5 32 27 86 85,5 151 120 43 33,5 28,5 19 2,5 4 25° 1,25x45° 3,4 Kg

D1 36 90 81,5 M85x1,5 32 27 86 85,5 211 120 43 33,5 28,5 19 2,5 4 25° 1,25x45° 4,5 Kg

D1 37 90 81,5 M85x1,5 32 27 86 85,5 281 120 43 33,5 28,5 19 2,5 4 25° 1,25x45° 5,9 Kg

D1 40 110 98,4 M105x2 42,9 38 106 105,5 104,5 130 53,5 43,4 35,5 19 3,5 5 30° 1,5x45° 3,9 Kg

D1 41 110 98,4 M105x2 42,9 38 106 105,5 197,5 130 53,5 43,4 35,5 19 3,5 5 30° 1,5x45° 6,4 Kg

D1 42 110 98,4 M105x2 42,9 38 106 105,5 317,5 130 53,5 43,4 35,5 19 3,5 5 30° 1,5x45° 9,8 Kg

D1 43 110 98,4 M105x2 42,9 38 106 105,5 416,5 130 53,5 43,4 35,5 19 3,5 5 30° 1,5x45° 12,4 Kg

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OVERALL DIMENSIONS

KH420 D1 2xx / 3xx / 4xx

KH420 SERIES 3/7

CONTROL BLOCK MACHINING

REFERENCE DRAWING

HYDRAULIC SYMBOLS

ON REQUEST

STANDARD

ORDERING INFORMATION

1. FILTER SERIES

4. FILTER MEDIA

6. SEALS

7. CORROSION PROTECTION

1. 2. 3. 4. 5. 6. 7. 8.

KH420 D1 20 G10 A B S 0

D1 20 G10 A

KH420

2. FILTER ELEMENT SERIES

3. FILTER SIZE

25-20-24-21-26

35-36-37

40-41-42-43

S standard

5. ELEMENT COLLAPSE

A 21 bar

B 210 bar

000 no element

G01 glassfiber ß

4µm(c)

≥ 1.000

G03 glassfiber ß

5µm(c)

≥ 1.000

G06 glassfiber ß

7µm(c)

≥1.000

G10 glassfiber ß

12µm(c)

≥1.000

G15 glassfiber ß

17µm(c)

≥ 1.000

G25 glassfiber ß

22µm(c)

≥1.000

*B NBR

V FKM (option)

not available for size 08

not available for size 08 - standard for size 43

SPARE ELEMENT

8. OPTION

0 no option

D drain plug (on request)

*omitted for spare element

By pass valve, indicator and related measurements and tolerances for machining available on request.

KH420 SERIES 4/7

ELEMENT PRESSURE DROP (filter elements 210 bar collapse)

The element ∆p (bar) is given by the flow rate (l/min) multiplied by the factor in the table here below corresponding

to the selected media and divided by 1000.

If the oil has a viscosity Vx different than 32 cSt a corrective factor Vx/32 must be applied.

Example: 80 l/min with D121G10B and oil viscosity 46 cSt > (80 x 5,25)/1000 x (46/32) = 0,60 bar

ELEMENT PRESSURE DROP (filter elements 21 bar collapse)

The element ∆p (bar) is given by the flow rate (l/min) multiplied by the factor in the table here below corresponding

to the selected media and divided by 1000.

If the oil has a viscosity Vx different than 32 cSt a corrective factor Vx/32 must be applied.

Example: 80 l/min with D121G10A and oil viscosity 46 cSt >(80 x 4,42)/1000 x (46/32) = 0,51 bar

G01B G03B G06B G10B G15B G25B

D108 120,86 83,59 57,25 34,76 24,65 15,93

D125 57,38 39,23 27,50 16,53 10,15 8,03

D120 37,18 26,03 14,77 11,57 6,89 6,13

D124 24,56 17,19 11,37 6,63 4,93 3,92

D121 23,89 16,72 11,25 5,25 3,85 3,34

D126 17,65 11,48 7,79 5,17 3,55 2,85

D135 20,27 14,19 9,50 5,66 4,01 3,41

D136 16,90 11,83 7,92 4,72 3,34 2,84

D137 12,35 8,64 5,79 3,45 2,44 2,07

D140 18,57 13,00 9,63 5,05 3,74 3,33

D141 10,22 7,15 4,00 2,57 1,76 1,44

D142 5,53 3,87 2,93 1,67 1,12 0,77

D143 4,59 3,21 1,80 1,10 0,93 0,70

G01A G03A G06A G10A G15A G25A

D125 50,24 35,56 25,75 15,51 8,27 7,57

D120 30,43 21,30 13,97 8,39 5,18 4,78

D124 19,90 13,93 8,42 5,17 4,16 3,60

D121 15,48 10,84 6,79 4,42 3,38 2,93

D126 13,24 8,61 5,75 4,03 2,91 2,43

D135 15,82 11,07 7,27 4,45 3,03 2,87

D136 13,19 9,23 6,06 3,71 2,53 2,39

D137 9,63 6,74 4,43 2,71 1,85 1,75

D140 14,65 10,26 6,73 4,12 2,81 2,66

D141 6,88 4,82 2,98 2,02 1,42 1,21

D142 4,67 3,27 1,99 1,36 1,04 0,83

D143 3,28 2,30 1,26 0,70 0,56 0,40

KH420 SERIES 5/7

USER TIPS

INSTALLATION

FILTER ELEMENT

SEAL KIT

FILTER BOWL

IDENTIFICATION LABEL

1. the filter bowl should be preferably mounted

(3) downward

2. enough space must be available for filter

element replacement

3. the visual clogging indicator must be in a easily

viewable position

4. when a electrical indicator is used, make sure

that it is properly wired

5. never run the system with no filter element fitted

6. keep in stock a spare FILTREC filter element for

timely replacement when required

7. the hydraulic system should be earthed

OPERATION

1. the filter must work within the operating

conditions of pressure, temperature and

compatibility given in the first page of this data

sheet

2. the filter element must be replaced as soon as

the clogging indicator signals at working

temperature (in cold start conditions, oil

temperature lower than 30°C, a false alarm can

be given due to oil viscosity)

3. If no clogging indicator is mounted, replace the

element according to the system manufacturer’s

recommendations

WARNING

Make sure that Personal Protective Equipment (PPE) is

worn during installation and maintenance operation.

DISPOSAL OF FILTER ELEMENT

The used filter elements and the filter parts dirty of oil

are classified as “Dangerous waste material”: they

must be disposed according to the local laws by

authorized Companies.

MAINTENANCE

1. make sure that the system is switched off and

there is no residual pressure in the filter /

hydraulic system

2. unscrew the bowl (3) by turning it anti-clockwise

and remove it

3. remove the dirty element (1)

4. fit a new FILTREC element (1), verifying the part

number, particularly concerning the micron

rating; open its plastic protection on the open

end side and insert it onto the spigot in the filter

head, then remove completely the plastic

protection

5. clean carefully the bowl; check the O-rings (2)

conditions and replace if necessary

6. lubricate the bowl's thread (3) and screw it by

hand in your hydraulic system by turning it

clockwise

7. screw in the bowl to stop

8. the used filter elements cannot be cleaned

and re-used

SPARE SEAL KIT PART NUMBER

NBR FKM

KH420 D1-08 06.021.00313 06.021.00314

KH420 D1-2x 06.021.00268 06.021.00269

KH420 D1-3x 06.021.00270 06.021.00271

KH420 D1-4x 06.021.00272 06.021.00273

BOWL TIGHTENING TORQUE

screw up filter bowl till end

KH420 SERIES 6/7

KH420 SERIES 7/7

Technical information may change without notice.

CT94-rev.09/23