up to
350 bar
up to
30 l/min
Connection
housings
Cartridge valves
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2
1. DESCRIPTION
1.2. GENERAL
According to DIN–ISO 1219,
FLUTEC 2/2 seat valves, type
2SV are directional valves for oil
hydraulic systems which open
and close a flow path. The valves
are designed as direct–operated
or pilot–operated cone seat
valves and are electro–
magnetically actuated by means
of pressure–tight, wet–pin
solenoids. The 2SV directional
seat valves are designed for a
flow rate of up to 30 I/min and
have the following advantages:
– cartridge valve with standardised
installation dimensions means
that it is flexible and suited to
many different applications
– in the closed position the flow
paths are shut off by means of a
cone seat
– minimal wear and long life due to
hardened and polished control
elements
– high level of switching safety
even after long periods of
non–actuation at high pressure
–
long life and low noise level due
to wet–pin solenoid armature
– the compact design allows
space–saving installation in
connection housings and control
blocks
– simple assembly and
service–friendly cartridge valve
technology
– electro–magnetic actuation
available in all standard
international DC and AC voltages
– many types of electrical
connections
– low electrical power consumption
at high hydraulic switching
capacity
– solenoid coils can be rotated
through 360
and exchanged
without opening the hydraulic
system
A wide range of connection
housings is available for optimum
adaptation to a multitude of
applications.
1.3. FUNCTION
1.3.1. 2SV1E1Z
A
solenoid coil
B
closing spring
C solenoid armature
D valve cone
E valve seat
With a non–energised solenoid coil the
closing spring pushes the valve cone via
the solenoid armature onto the valve
seat. The valve is now closed from port
2 to port 1. In the opposite direction from
port 1 to port 2 there is free flow through
the valve. The valve cone opens at a
pressure differential of approx. 30 bar
(check valve function). If the solenoid
coil is energised by applying the
operating voltage, the solenoid armature
produces the opening stroke against the
force of the closing spring. The valve
cone is thereby pulled off its seat and
there is now free flow through the valve
from port 2 to port 1 and in the opposite
direction from port 1 to port 2.
1.3.2. 2SV1E1Y
A
solenoid coil
B valve cone
C
opening spring
D solenoid armature
E plunger
F valve seat
With a non–energised solenoid coil the
valve cone is held by the opening spring
in the rear switching position. The valve
is open and there is free flow through
the valve from port 2 to port 1 and in the
opposite direction from port 1 to port 2.
If the solenoid coil is energised by
applying the operating voltage, the
solenoid armature produces the closing
stroke. In so doing it pushes the valve
cone via the plunger onto the valve seat
against the force of the opening spring.
The valve is now closed from port 2 to
port 1. In the opposite direction the
solenoid force keeps the valve closed
up to a pressure differential of
approx. 400 bar.
1.1.
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1.2.3. 2SV5E2Z and 2SV5E2ZR
A
solenoid coil
B
closing spring
C solenoid armature
D
pilot cone
E
pilot bore
F valve piston
G valve seat
H check valve
With a non–energised solenoid coil the
closing spring pushes the pilot cone
via the solenoid armature onto its seat
on the pilot bore and the valve piston
onto the valve seat. The valve is
closed from port 2 to port 1. In the
opposite direction from port 1 to port 2
there is free flow through the valve.
The valve piston opens at a pressure
differential of approx. 1 bar (check
valve function). If the solenoid coil is
energised by applying the operating
voltage, the solenoid armature
produces the opening stroke against
the force of the closing spring.
The pilot cone is pulled off its seat and
opens the pilot bore which relieves
pressure from behind the valve piston
and hydraulically pushes the valve
piston into the opening position.
There is now free flow through the
valve from port 2 to port 1. Only valve
type 2SV5E2ZR has free flow from
port 1 to port 2 in this switching
position due to the check valve built
into the valve piston.
1.2.4. 2SV5E2Y and 2SV5E2YR
A
solenoid coil
B
pilot cone
C
opening spring
D pilot bore
E valve piston
F check valve
G solenoid armature
H plunger
J valve seat
With a non–energised solenoid coil the
pilot cone is held by the opening
spring in the rear switching position.
The pilot bore is open. This relieves
pressure from behind the valve piston
which is hydraulically kept in the open
position. There is free flow through the
valve from port 2 to port 1. Only valve
type 2SV5E2YR has free flow in the
opposite direction from port 1 to port 2
in this switching position due to the
check valve built into the valve piston.
If the solenoid coil is energised by
applying the operating voltage, the
solenoid armature produces the
closing stroke. In so doing it pushes
the pilot cone via the plunger onto its
seat in the valve piston against the
force of the opening spring, thereby
closing the pilot bore. The area behind
the valve piston is pressurised and the
valve piston is pushed onto the valve
seat. The valve is now closed from
port 2 to port 1. In the opposite
direction the solenoid force keeps the
valve closed up to a pressure
differential of approx. 20 bar.
1.2.5. 2SV5E1V
A
solenoid coil
B valve piston
C
opening spring
D solenoid armature
E plunger
F valve seat
G pressure compensation bore
With a non–energised solenoid coil the
valve piston is held by the opening
spring in the rear switching position.
The valve is open and there is free
flow through the valve from port 1 to
port 2 and in the opposite direction
from port 2 to port 1. If the solenoid
coil is energised by applying the
operating voltage, the solenoid
armature produces the closing stroke.
In so doing it pushes the valve piston
via the plunger onto the valve seat
against the force of the opening spring.
Port 1 is connected with the back of
the piston via the pressure
compensation bore. The hydraulic
forces on the valve piston are thereby
compensated. The valve is now closed
from port 1 to port 2 and in the
opposite direction from port 2 to port 1.
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1.2.6. 2SV5E1W
A
solenoid coil
B
closing spring
C valve piston
D valve seat
E pressure compensation bore
F solenoid armature
G plunger
With a non–energised solenoid coil the
closing spring pulls the valve piston onto
the valve seat. Port 1 is connected with
the back of the piston via the pressure
compensation bore. The hydraulic
forces on the valve piston are thereby
compensated. The valve is closed from
port 1 to port 2 and in the opposite
direction from port 2 to port 1.
If the solenoid coil is energised by
applying the operating voltage, the
solenoid armature produces the opening
stroke. In so doing it pushes the valve
piston via the plunger into the open
position against the force of the closing
spring. There is now free flow through
the valve from port 2 to port 1 and in the
opposite direction from port 1 to port 2.
1.3. APPLICATION
The 2SV...2/2 directional seat
valves are used in oil hydraulic
systems where the starting and
stopping of an oil flow must be
controlled and a positive shut–off
is required.
The 2SV5E2Z seat valve can be
used, for example, as an
electrically operated check valve
to control lifting devices. With a
non–energised solenoid coil there
is free flow through the valve from
port 1 to port 2 for lifting the
device. When the pump is
switched off it is kept in position
until the solenoid coil is energised
to lower the device.
The 2SV5E2Y seat valve can be
used as a normally open valve,
e.g. as a safety release valve in
oil hydraulic systems.
With a non–energised solenoid
coil the valve acts as a bypass
valve between the pressure line
and the tank to ensure that no
pressure can build up in the
system until the solenoid coil is
energised and the valve closes. A
suitable arrangement of the valve
ensures automatic pressure
release of the hydraulic system in
the event of a power cut or
emergency switch–off.
The 2SV5E1V
and
2SV5E1W
seat valves are especially used
where a positive shut–off is
required in both directions, e.g. in
the supply and drainage of
double–acting cylinders.
The 2SV1E1Z
and
2SV1E1Y
seat valves are particularly
suitable for use as pilot valves
due to their low flow rate.
1.4. RECOMMENDATIONS
– To ensure faultless operation, the
operating limits regarding flow
rate and operating pressure must
be observed.
– Flow through the valves must
only be in the directions indicated
by an arrow in the symbols
(see point 2.1.1.)
– When fitting the valves into
control blocks and housings, the
appropriate torque must be
observed (see point 3)!
– Prior to electrical commissioning,
the suitability of the actuating
solenoid for the existing operating
voltage with regard to type and
amount of voltage must be
ensured. If used with AC current,
a bridge rectifier connector socket
must be used.
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2. TECHNICAL
SPECIFICATIONS
2.1. GENERAL
2.1.1. Designation and symbol
Function Z
(Nominal width 5, pilot–operated)
Function ZR
(Nominal width 5, pilot–operated)
and
Function Z
(Nominal
w
idt
h 1
, d
irect–operated)
Function Y
(Nominal width 5, pilot–operated)
Function YR
(Nominal width 5, pilot–operated)
and
Function Y
(Nominal
w
idt
h 1
, d
irect–operated)
Function V
Function W
Type of connection
Cartridge valve
Size
1 = flow rate up to 3 l/min
(functions Y and Z)
5 = flow rate up to 20 l/min
(functions V and W)
flow rate up to 30 l/min
(functions Z, ZR,Y and YR)
2.1.2 Model code
(also Order Example)
2SV
5 E 2 Z . X / G 24 –Z4 – N
2–way seat valve
Type code
1 = direct–operated
size 1: functions Z and Y
size 5: functions V and W
2 = pilot–operated
size 5: (functions Z, ZR,Y and YR)
Function (see 2.1.1.)
Z
ZR
Y
YR
V
W
Series
(Determined by manufacturer)
Type of voltage for actuating solenoid (see 2.3.2.)
G=DC
W = AC (rectified connector)
Nominal voltage for actuating solenoid (see 2.3.3.)
24 = 24 V DC (for voltage type G)
110 = 110 V 50/60 Hz AC (for voltage type W)
230 = 230 V 50/60 Hz AC (for voltage type W)
Type of actuating solenoid (see 2.3.1.)
if no details given = with plug to DIN 43650
for connecting an appropriate connector
K = with KOSTAL threaded connection M27x1
for nominal voltages up to 24 V DC
T = with 2–pole AMP Junior timer plug
for nominal voltages up to 48 V DC
L = with flying leads (0.75 mm
cable cross section)
for nominal voltages up to 48 V DC
others on request
Type of connection for actuating solenoid
if no details given = without connector
Z4 = connector to DIN 43650–AF2–PG11
Z5 = large connector
Z5L = large connector with lamp
Z27 = KOSTAL connector
, only available
if K type solenoid ordered
Hand emergency operation (see 2.3.11.)
if no details given = without hand emergency
N = pin type operation
NG = thumb pressure operation
symbols V, W, Y, YR only
for
AC type,
connector is
automatically
supplied with
bridge rectifier
insert
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2.1.3. Type of construction
Seat valve
direct– or pilot–operated
2.1.4. Type of mounting
Cartridge valve
2.1.5. Mounting position
Optional
2.1.6. Weight
2SV.E...0.42 kg
2.1.7. Direction of flow
According to symbol, only
permissible in direction of arrow
2.1.8. Ambient temperature range
Min. – 20 °C
Max. + 40 °C
2.1.9. Materials
Valve body:
high tensile steel
Closing elements:
hardened polished steel
Seals:
FPM and Teflon
2.1.10.Type of connection
Suitable connection housings with
installation dimensions 06020 are
available (see separate housing
brochure no. E 5.252..../...)
2.1.11. Nominal size
Size = 1 (2SV1...)
Size = 5 (2SV5...)
2.2. HYDRAULIC DETAILS
2.2.1. Nominal pressure
p
N
= 350 bar
2.2.2. Cracking pressure
Function Z and ZR with flow
direction from port 1 to port 2 and
solenoid coil non–energised.
Size 1... p
o
= 30 bar
Size 5... p
o
= 1 bar
2.2.3. Pressure fluid
Hydraulic oil to DIN 51524
Part 1 and 2. For other fluids,
please contact our Sales/
Technical department.
2.2.4. Temperature range of hydraulic
fluid
Min.
–20
°C
Max. +80 °C
2.2.5. Viscosity range
Min. 10 mm
2
/s
Max. 380 mm
2
/s
2.2.6. Flow rate, pressure–dependent
Performance limit
Size 1
Function Curve
Z1.
. . . . . . . . . . . . . . . . . . . .
Y1
. . . . . . . . . . . . . . . . . . . . .
Size 5
Function Curve
Z, ZR 5.
. . . . . . . . . . . . . . . .
Y, YR 5.
. . . . . . . . . . . . . . . .
V4
. . . . . . . . . . . . . . . . . . . . .
W (1→2) 3.
. . . . . . . . . . . . .
W (2→1) 2.
. . . . . . . . . . . . .
Standard models
Model code
Symbol Stock no. (order no.)
2SV1E1Y.X/G24–Z4 710402
2SV5E2Y.X/G24–Z4
2SV5E2Y.X/W230–Z4
710406
710407
2SV1E1Z.X/G24–Z4 710400
2SV5E2Z.X/G24–Z4
2SV5E2Z.X/W230–Z4
710404
710405
2SV5E1V.X/G24–Z4
2SV5E1V.X/W230–Z4
711236
711046
2SV5E1W.X/G24–Z4
2SV5E1W.X/W230–Z4
710408
710409
Please quote stock number when ordering.
Delivery for non–standard models is longer and the price is higher.
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2.2.7. Filtration
Maximum permissible
contamination level of the
operating fluid to NAS 1638,
Class 10. We therefore
recommend using a filter with
a minimum retention rate of
β
20
100. The fitting of filters and
regular replacement of the filter
element guarantees correct
functioning, reduces wear and
tear and increases the service
life.
2.2.8. Pressure drop,
dependant on flow rate
Measured at = 34 mm/s
Size 1
2SV1
Function Z and Y
Curve
Function
Flow
direction
2 1
Flow
direction
1 2
Z
energised
1 1
Z de–energised
– 3
Y de–energised
2 1
Size 5
2SV5...
Function Z and ZR
Curve
Function
Flow
direction
2 1
Flow
direction
1 2
Z energised 1 –
Z de–energised – 2
ZR energised 1 3
ZR
d
e–energised – 2
2SV5...
Function Y and YR
Curve
Function
Flow
direction
2 1
Flow
direction
1 2
Y de–energised 1 –
YR
d
e–energised 1 2
2SV5...
Function V and W
Curve
Function
Flow
direction
2 1
Flow
direction
1 2
V de–energised 1 1
W energised 1 1
2.3. ELECTRICAL SPECIFICATIONS
2.3.1. Type of operation
Electro–magnetic operation by
means of pressure–tight, wet–pin
single stroke solenoids to
VDE 0580.
Types of solenoid:
– Actuating solenoid with plug to
DIN 43650 standard for general
industrial applications, available
for nominal voltages up to
230 V DC and up to 240 V AC.
For dimensions, see point 3.
– Actuating solenoid with KOSTAL
plug for use in mobile
applications, only available for
nominal voltages up to 24 V DC.
For dimensions see point 3.
– Actuating solenoid with AMP
Junior timer 2 pole plug for
mobile applications, available for
nominal voltages up to 48 V DC.
For dimensions, see point 3.
– Actuating solenoid with flying
leads, available for nominal
voltages up to 48 V DC. For
dimensions, see point 3.
2.3.2. Type of voltage
DC solenoid (code G)
For use with AC (code W), the
required DC is produced by using
bridge rectifier connector socket.
2.3.3. Nominal voltage
Standard voltages available:
Voltage type G: 24 V
Voltage type W: 230 V
Other voltages in the range
6 to 240 V are available
on request.
2.3.4. Voltage tolerance
– 5%
+ 10%
2.3.5. Nominal current
Depending on nominal voltage
G 24: 1.04 A
W 230: 0.13 A
2.3.6. Power consumption
p
20
= 26W
2.3.7. Switch–on time
100% switch–on time =
continuous operation
Minimum dimensions for
connection housing:
50 x 50 x 30 mm
2.3.8. Switching time
Depending on symbol, pressure
across individual ports and flow
rate, the switch–on time is
approximately 25 ms, switch–off
time approximately 35 ms.
2.3.9. Safety type to DIN 40050
Z4, Z5 and Z5L: IP 65
Z27 (KOSTAL): IP 67
AMP Junior timer: IP 65
Flying leads: IP 65
These safety types apply for
correctly fitted plugs.
2.3.10.Switching frequency
3,600 1/h
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2.3.11. Emergency manual override
Dimensions Notes Actuating force
N... pin type operation
(pushing in)
Manual operation by means of a pin.
The opening has a diameter of 5 mm.
The pin is countersunk by 3.5 mm.
The operating stroke is 1.5 mm.
The valve is switched as pressure is
applied to the actuating mechanism
by means of an appropriate pin.
Available for function V, W, Y, YR.
NG... thumb pressure operation
(rubber cap)
Manual operation is possible
without tool (thumb pressure)
Available for functions V, W, Y, YR.
N... pin type operation
(pulling out)
The valve is switched as the
actuating mechanism is pulled out
using an appropriate tool.
The operating stroke is 1.5 mm.
Available for functions Z, ZR.
pressure
[bar]
pressure [bar]
pressure [bar]
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3. DIMENSIONS
2SV..
Installation dimension 06020
4. NOTE
All
details in this brochure are subject to technical modifications.
solenoid coil
with
flying leads
solenoid
c
oi
l w
ith
K
OSTAL
screw
c
onnectio
n M 2
7 x 1
solenoid coil with
AMP Junior timer plug
solenoid coil with plug to DIN 43650
after loosening mounting screw,
solenoid coils can be rotated
through 360
, removed and replaced
connector Z4
outline: connector Z5 and Z5L
connectors Z4, Z5 and Z5L can be
displaced by 4 x 90;
cable connection: PG11
torque rating
separate connector
supplied loose
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