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2
43 100/117 ED
KT08
CARTRIDGE SOLENOID VALVE
SERIES 10
OPERATING PRINCIPLE
— The KT08 is a 2-ways solenoid valve, poppet type,
cartridge execution, available in normally closed version
(NC) and normally open version (NO) with nominal flow
rate of 50 l/min.
— It ensures a low internal leakage, which decreases while
the pressure increases.
— The valve can be ordered with direct current or rectified
current solenoids and with five different types of electrical
connections, in order to cover many installation
requirements (see paragraph 7).
— For every version, the emergency manual override is an
available option (see paragraph 9).
HYDRAULIC SYMBOLS
CARTRIDGE TYPE
seat 3/4-16 UNF-2B ISO 725
p max
350 bar
Q nom 50 l/min
Maximum operating pressure bar 350
Nominal flow rate l/min 50
Pressure drops ∆p - Q see paragraph 3
Electrical characteristics see paragraph 5
Electrical connections see paragraph 7
Ambient temperature range °C -20 / +50
Fluid temperature range °C -20 / +80
Fluid viscosity range cSt 10 ÷ 400
Fluid contamination degree
According to ISO 4406:1999 class
20/18/15
Recommended viscosity cSt 25
Mass kg 0,32
Surface treatment with white colour zinc
According to ISO 2081
Fe/Zn12/A
PERFORMANCES
(working with mineral oil of viscosity of 36 cSt at 50°C)
22
11
11
22
KT08-2NC
KT08-2NO
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KT08
SERIES 10
Power supply
D12 = 12 V
D24 = 24 V
R110 = 110 V
R230 = 230 V
1 - IDENTIFICATION CODE
Cartridge
solenoid valve
See NOTE 2
Valve type
T = poppet type
Nominal dimension
08 = mounting interface 3/4-16 UNF-2B ISO 725
Coil type:
D12 = 12 V
D24 = 24 V
R110 = 110 V
R230 = 230 V
D00 = valve without coil (see NOTE 1)
Spool types:
2NC = 2-way normally closed
2NO = 2-way normally open
Series no.:
(the overall and mounting dimensions remain unchanged
from 10 to 19)
Seals:
N = NBR seals for mineral oil (standard)
V = FPM seals for special fluids
K T 08
-
/
10 - /
2 - HYDRAULIC FLUIDS
Use mineral oil-based hydraulic fluids HL or HM type, according to ISO 6743-4. For these fluids, use NBR seals (code N). For fluids HFDR type
(phosphate esters) use FPM seals (code V). For the use of other fluid types such as HFA, HFB, HFC, please consult our technical department.
Using fluids at temperatures higher than 80 °C causes a faster degradation of the fluid and of the seals characteristics. The fluid must be
preserved in its physical and chemical characteristics.
1.1 - Coil identification code
- / 10
Series no.:
(the overall and mounting dimensions remain unchanged from10 to 19)
direct current
(standard)
rectified
current
NOTE 1: The coil locking ring and the relevant seals are included in the supply.
NOTE 2: The manual override CM is available as an option (see paragraph 9).
direct current
(standard)
rectified
current
@
@
@
@
L3
14C
Coil electrical connection:
(see paragraph 7)
K1 = plug for connector type
EN 175301-803 (ex DIN 43650)
(standard)
For DC supply only:
K2 = plug for connector type
AMP JUNIOR
K4 = outgoing cables
WK7 = plug DEUTSCH DT04-2P
for male connector type
DEUTSCH DT06-2S
WK8 = plug for connector type
AMP SUPER SEAL
Coil electrical connection (see paragraph 7)
K1 = plug for connector type EN 175301-803 (ex DIN 43650) (standard)
For D12 and D24 coils only:
K2 = plug for connector type AMP JUNIOR
K4 = outgoing cables
WK7 = plug DEUTSCH DT04-2P for male connector type
DEUTSCH DT06-2S
WK8 = plug for connector type AMP SUPER SEAL
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KT08
SERIES 10
ENERGIZING DE-ENERGIZING
TIMES (±10%)
60 ms
KT08-2NC
KT08-2NO
85 ms
85 ms 60 ms
4 - SWITCHING TIMES
The values indicated refer to a valve tested with Q = 25 l/min,
p = 350 bar, working with mineral oil at a temperature of 50°C and a
viscosity of 36 cSt.
3 - PRESSURE DROPS ∆p-Q
(obtained with viscosity of 36 cSt at 50 °C)
The values in graphs refer to both NC and NO valves and they differ for the mounting interface used.
[bar]
p
14
504030
Q[l/min]
8
6
4
2
2010
0
1
0
1
2
2
1
1
2
[bar]
p
504030
Q[l/min]
8
6
4
2
2010
0
10
2
1
1
2
0
+
0.13
3
.2
9.5min
0
+0.05
18.9max
0
.1
A
ø30
A
A
0
0.05
0.05
1
.
6
45°
R
0.2
A
1.6
30°
2.5
19.05
20.63
28.6min
+0.4
0
14.3min
+0.4
ø12.7
ø20.6
3/4-16UNF-2B
1
5
°
2
1
dimensions in mm
dimensions in mmoversize mounting interface dimensions
3/4-16 UNF-2B ISO 725
standard mounting interface dimensions
3/4-16 UNF-2B ISO 725
60
1
19
27
ø12.7g6
ø15.5
3/4-16UNF-2B
ø26.8
2
3
4
5
40
77
2
1
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KT08
SERIES 10
6 - OVERALL AND MOUNTING DIMENSIONS
5 - ELECTRICAL FEATURES
5.1 - Solenoids
These are essentially made up of two parts: tube and coil. The tube is threaded onto the valve body and includes the armature that moves
immersed in oil, without wear. The inner part, in contact with the oil in the return line, ensures heat dissipation. The coil is fastened to the tube
by a threaded nut, and can be rotated according to the available space.
The interchangeability of coils of different voltages both D or R type is possible without removing the tube.
Protection from atmospheric agents IEC 60529
The IP protection degree is intended for the whole valve. It is
guaranteed only with both valve and connectors of an equivalent IP
grade, correctly connected and installed.
Versions with CM manual override are IP65 always.
5.2 - Current and absorbed power
In the table are shown current and power consumption values relevant to the different coil types. “R” coil must be used when the valve is fed
with AC power supply subsequently rectified by means of rectifier bridge, externally or incorporated in the “D” type connector (see cat. 49 000).
Resistance at
20°C
[Ω] (±1%)
Absorbed
current
[A] (±5%)
Absorbed power
(±5%)
[W] [VA]
Coil code
K1 K2 K4 WK7 WK8
D12 5,4 2,2 26,5 1902740 1902750 1902770 1903510 1903520
D24 20,7 1,16 27,8 1902741 1902751 1902771 1903511 1903521
R110 363 0,25 27,2 1902742
R230 1640 0,11 26,4 1902743
SUPPLY VOLTAGE FLUCTUATION ± 10% Vnom
MAx SWITCH ON FREQUENCY 10.000 ins/hr
DUTY CYCLE 100%
ELECTROMAGNETIC COMPATIBILITY
(EMC)
In compliance with
2014/30/EU
LOW VOLTAGE
In compliance with
2014/35/EU
CLASS OF PROTECTION :
Coil insulation (VDE 0580)
Impregnation:
class H
class H
36
6
23.5
48
75
7
15
dimensions in mm
1 Coil removal space
2 OR type 4081 (20.22x3.53)
3 Hexagonal: spanner 27 - tightening torque 50 Nm
4 OR type 3.908 (16.36x2.21)
5 OR type 2037 (9.25x1.78) - 90 Shore
6 Electric connector EN 175301-803 (ex DIN 43650)
(drawing relevant to standard connection K1 - for other
types of connection see paragraph 7)
7 Connector removal space
(*) The protection degree IP69K is not taken into account in
IEC 60529 but it is included in both ISO 20653.
Electric connection IP65 IP66 IP67 IP68
IP69
IP69K (*)
K1 EN 175301-803 x x
K2 AMP JUNIOR x x
K4 outgoing cables x
WK7 DEUTSCH DT04 male x x x x
WK8 AMP SUPER SEAL x x x x x
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KT08
SERIES 10
9 - MANUAL OVERRIDE
CM for NO version (pushing type)
CM for NC version (screw type)
7 - ELECTRIC CONNECTIONS
8 - ELECTRIC CONNECTORS
Solenoid valves are delivered without connectors. Connectors type EN 175301-803 (ex DIN 43650) for K1 connection can be ordered
separately. See catalogue 49 000.
connection for EN 175301-803
(ex DIN 43650) connector type
code K1 (standard)
connection for AMP JUNIOR
connector type
code K2
outgoing cable connections
cable length = 1 mt
code K4
connection for DEUTSCH DT04-2P
for male connector type DEUTSCH DT06
code WK7
connection for AMP SUPER SEAL
(two contacts) connector type
code WK8
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KT08
SERIES 10
A
A1
B
B1T1
TP
P1
T
T1 B1
B
A1
A
B
B1
P
P1
T
T1
A
A1
B
B1
P
P1
T
T1
A
A1
A1
A
T1
T
P1
P
B1
B
B
B1
P
P1
T
T1
A
A1
P1
PT
T1 B1
B
A1
A
P1
PP
P1
A
A1
B
B1T1
T
B
B1
P
P1
T
T1
A
A1
B
B1
P
P1
T
T1
A
A1
KTM3-P
KTM3-PT
KTM3-D
KTM3-RD
KTM3-SB
10 - SUBPLATES FOR MODULAR MOUNTING
10.1 - Identification code
Modular subplate
for KT08 cartridge solenoid valves
Size ISO 4401-03
Series no.: (the overall and mounting
dimensions remain unchanged from10 to 19)
P = delivery interception on P line
PT = interception on P-T lines
D = outgoing interception on A and B lines
RD = incoming interception on A and B lines
SB = outgoing interception on B line
Seals:
N = NBR seals for mineral oil
(standard)
V = FPM seals for special fluids
K T M
3 - / 10
0.750.75
TT
BB
31.7531.75
PP
AA
25.925.9
15.515.5
5.15.1
12.712.7
3131
M5M5
Ø4Ø4
Ø7.5(max)Ø7.5(max)
21.521.5
30.230.2
40.540.5
3333
MOUNTING INTERFACE HYDRAULIC SYMBOLS
ISO 4401-03-02-0-05
(CETOP 4.2-4-03-350)
[bar]
p
4030
Q
[l/min]
15
10
5
2010
0
[bar]
p
4030
Q[l/min]
15
10
5
2010
0
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KT08
SERIES 10
10.2 - Overall and mounting dimensions KTM3-P
dimensions in mm
dimensions in mm
10.3 - Overall and mounting dimensions KTM3-PT
p
ressure drops relevant to the subplate and the
valve mounted with flow rate 2 -1
PRESSURE DROPS ∆p - Q
pressure drops relevant to the subplate and the
valve mounted with flow rate 2 - 1
1 Mounting surface with sealing rings:
n. 4 OR type 2037 (9.25x1.78) - 90 Shore
2 Cartridge solenoid valve KT08
(to be ordered separately)
1 Mounting surface with sealing rings:
n. 4 OR type 2037 (9.25x1.78) - 90 Shore
2 Cartridge solenoid valve KT08
(to be ordered separately)
PRESSURE DROPS ∆p - Q
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KT08
SERIES 10
REPRODUCTION IS FORBIDDEN. THE COMPANY RESERVES THE RIGHT TO APPLY ANY MODIFICATIONS.
KTM3-D
KTM3-RD
10.4 - Overall and mounting dimensions KTM3-D, KTM3-RD and KTM3-SB
dimensions in mm
[bar]
p
504030
Q[l/min]
15
10
5
2010
2
1
0
(1) subplate pressure drops
(2) pressure drops relevant to the subplate
and the valve mounted with flow rate 2 - 1
PRESSURE DROPS ∆p - Q
NOTE: In order to use a single
port (shut-off of on path A), a plug
must be ordered separately.
Code 0266683 for NBR seals
(standard)
Code 0266684 for viton seals.
1 Mounting surface with sealing rings:
n. 4 OR type 2037 (9.25x1.78) - 90 Shore
2 Cartridge solenoid valve KT08
(to be ordered separately)
KTM3-SB