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POCLAIN HYDRAULICS Hydraulic components - Directional control valves
Mechanically operatedElectrically operated Hydraulically operated
8/3 WAY DIRECTIONAL VALVES KV (NG 6)
• NG 6
• Up to 250 bar [3 625 PSI]
• Up to 50 l/min [13
.2 GPM]
• Plug-in connector for solenoids to ISO 4400.
• Threaded connections to ISO 9974 (Metric), ISO 1179 (BSPP/Gas), ISO 11926 (UNF).
• Protection of solenoid IP65 to EN 50529 / IEC 60529.
• Fulfil EMC (89/336/EEC).
KV-8/3-6
Operation Hydraulic symbol
Directional valves type KV with direct solenoid operation control the direction of the
hydraulic medium flow. They are mostly used as link between three consumers and the
basic directional valve, when we wish to control both consumers alternately by means of
one basic directional valve.
The KV type directional valves consist of a housing
(1), a control spool (2,3), two solenoids
(4,5) with return spring (6,7). Change-over to one of the operating positions is done by
combination of operation of solenoids (4,5), whereby the solenoid plunger acts on the
control spool (2,3) via the operating pin (8), thus clearing the corresponding flow ways and
establishing respective links between the ports P1, A, B, C, D, E, F and P2, as seen forth in
the schematic diagram of a mounting example.
When the solenoid (4,5) is de-energized, the contr
ol spool (2.3) is returned to their neutral
position by the return spring (6,7).
The change-over can also be done manually by pressing the
emergency manual override
(9).
Mounting example
Features
Hydraulic
Size
6
Flow rate L/min [GPM] 50 [13.21]
Operating pressure bar [PSI] 250 [3 625]
Oil temperature range °C [°
F] -20 to +70 [-4 to +158]
Viscosity range mm
2
/s [SUS] 15 to 380 [3.24 to 82]
Mounting position Optional
Mass kg [l
b]
3,8 [8
.38]
Filtration NAS 1638
8
Electrical
Supply voltage V
12, 24 DC
Power W
29
(12 V DC supply voltage)
36
Switching frequency 1/h 15000
Ambient temperature °C [°
F] to +50 [to +122]
Coil temperature °C [°F] to +180 [to +356]
Duty cycle Continuous
Dimensions
4.5. Solenoid ’’b’’ MR-045
9. Emergency manual override
10. Plug-in connector «b» - black
11. Nameplate
12. Valve cap
Threaded connection
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Directional control valves - Hydraulic components POCLAIN HYDRAULICS
P-Q Performance curves
Flow
Measured at 50°C [122°F] and viscosity of 32 mm
2
/s [148 SUS].
Pressure drop
Model code
8VK6/- 3
Overvoltage
Without overvoltage protection
No designation
With overvoltage protection
T
Threaded connections
M18x1,5
No designation
M22x1,5
M22
M20x1,5
M20
G3/8
G3/8
G1/2
G1/2
3/4-16 UNF-2B
SAE 8
Supply voltage
Direct voltage 24V
No designation
Direct voltage 12V
12 DC
Seal type
NBR seals for mineral oil HL, HLP, to DIN 51524
No designation
FPM seals for HETG, HEES, HEPG to VDMA
24568 and ISO 15380
E
--
-
Special requirements to be briefly specified
*
-
Manual override option
Emergency manual override
No designation
Manual override with rubber cover
G
Lockable manual override
C
Connector type
EN 175301-803 without signal lamp
No designation
EN 175301-803 with signal lamp
L
EN 175301-803 without connector
K
AMP Junior timer without connector
M
Deutsch
V
--
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POCLAIN HYDRAULICS Hydraulic components - Directional control valves
Mechanically operatedElectrically operated Hydraulically operated
