11.9
1
General work conditions and patents . . . . . .
Functional concept. . . . . . . . . . . . . . . . . . . . .
Technical features. . . . . . . . . . . . . . . . . . . . . .
Overal dimensions and ports size. . . . . . . . .
Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Order example
Inlet module. . . . . . . . . . . . . . . . . . . . . . . . . . .
Work section
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Outlet module. . . . . . . . . . . . . . . . . . . . . . . . . .
Spare parts order codes . . . . . . . . . . . . . . . . .
Pag: 3
Pag: 5
Pag: 6
Pag: 7
Pag: 13
Pag: 22
Pag: 26
Pag: 8
Pag: 9
Pag: 28
GENERAL CONTENTS
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1
NVD2
11.9
2
DCV
Universal products and solutions for lifting machine
NVD2 is a highly innovative (Directional Control Valve), which paves the way into the
world of proportional valves. NVD2 technology (patented) impressively joins constructive sim-
plicity and high functional performance; a simple and compact design, typical of the more tradi-
tional open-centre directional valves, it is associated with an extremely precise control, inde-
pendent from the loading conditions and s imultaneous m ovements. This DVC i s especially
efficient if electrically operated. It reaches its maximum potentials when used in combination
with radio control or electronic control devices. NVD2 distributor is sold either in its version for
fixed-cc pump (standard version on the catalogue) or in its version for variable-cc pumps (ask
NEM S.p.A. for further information). In case of fixed-cc pump, the typical structure with neutral
channel allows, differently from Load Sensing systems, to have less loading losses at stand-by
conditions. The geometry of NVD2, compact and robust, ensures its high reliability and a con-
siderable reduction of failures.
Spool
Proportional electro-
hydraulic control
Poppet flow control
Cap for auxiliary
valve replacement
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2
NVD2
FUNCTIONAL CONCEPT
Antishock valve
Dcv body
11.9
3
l O
Hydraulic layout
The hydraulic layout of NEM-NVD2 proportional DCV is similar to any open-center directional
control valve.
The technological feature that makes its operational concept similar to a Load Sensing direc-
tional control
valve
is the
fact
t
hat, being electrically operated, it controls its flow independently
from loading conditions and the simultaneous movements it is performing.
Manual actuator device is provided as emergency solution in case of malfunction of
the electro-hydraulic proportional control device: so that, in case of malfunction, NVD2 direc-
tional control valve acts as a norma
pen-center one.
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3
NVD2
L
T1
P1
A B
A B
T
P
8
7
6
44
5 5
9
11
22
3
2
3
2
3 3
*
FUNCTIONAL CONCEPT
11.9
4
General technical features
• Rated capacity in P, P1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50 l/min
• Working section capacity (A-B) . . . . . . . . . . . . . . . . . . . . . . . . .. 40 l/min
• Maximum operating pressure. . . . . . . . . . . . . . . . . . . . . . . . . . 350 bar
• Maximum back pressure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 bar
• Maximum work sections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 - 8
• Spool stroke. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5.5 + 5.5 mm
• Lever adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+19° / -19°
• Dead band . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 + 1 mm
• Cursor span . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 mm
• Work temperature . . . . . . . . . . . . . . . . . . . . . . . . . . .-25°C / +80°C
• Kinematic viscosity . . . . . . . . . . . . . . . . . . . . . .10 mm2 /s - 460 mm2 /s
• Degree of contamination. . . . . . . . NAS1638 class 9 (19/16 ISO-4406)
• Recommended filtering level. . . . . . . . . . . . . . . . . . . . . . . . . . .ß 10° 75
• Internal filter (reducing valve). . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 µm
• Spool operating force. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 28 daN
• Working temperature. . . . . . . . . . . . . . . . . . . . . . . . . . . .
-25°C / +80°C
• General filtering. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see page 30
• Internal leakage from A/B to T. . . . . . . . . . . . . . . . . . . . . . . .20 cc/min
18
Features of proportional electro-hydraulic control
• Power supply pressure . . . . . bar
• Maximum back pressure on L (connect to tank) . . . . . . . . . . . . . 1 bar
• Recommended PWM frequency . . . . . . . . . . . . . . . . . . . . . 60 - 90 Hz
• Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 VDC / 24 VDC
• Coil resistance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.9 / 15.5
• Maximum current supply: duty-cycle 100%. . . . . . . . . . . 1.8 A/ 0.9 A
. . . . . . . . . . . . . . .
. . . . .
. . . . . . . .
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4
NVD2
GENERAL TECHNICAL FEATURES
Installation requirements
For a proper operation of directional control valve NVD2, Nem s.p.a recommends to install a lter
on feeding line (P), with a 20 µm (
ß20 75) filtration degree.
11.9
5
ANTISHOCK VALVE FEATURES
Flow [l/min ]
CHARTS
PRESSURE DROP (P/ T)
100
150
200
250
300
350
400
0
50
100
10 15 20 25 30 35 40 0 5
Pressure [bar]
C3
C2
C1
RELIEF VALVE FEATURES
0
10 15 20 25 30 35 40
400
150
200
250
300
350
50
100
Pressure [bar]
VM1
VM2
VM3
0 5
Flow [l/min ]
6
8
10
12
14
16
18
0
2
4
10 15 20 25 30 35 40
0
5
Flow [l/min ]
Pressure [bar]
20
NVD2/8
NVD2/1
curve of p (P-T1) or (P-T)
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5
11.9
6
Flow current
Flow current
.8 1 1.2 1.4 1.6 1.8 (12VDC
.4 0.5 0.6 0.7 0.8 0.9 (24VDC
0
0
Amp
.)
Flow [l/min]
30l/min
40l/min
36l/min
10
15
20
25
30
0
5
Flow [l/min]
.8 1 1.2 1.4 1.6 1.8 (12VDC)
.4 0.5 0.6 0.7 0.8 0.9 (24VDC)
0
0
Flow current (Amp
.)
18l/min
12l/min
24l/min
4
6
8
10
0
2
.8 1 1.2 1.4 1.6 1.8 (12VDC)
.4 0.5 0.6 0.7 0.8 0.9 (24VDC)
0
0
Flow [l/min]
(Amp.)
3l/min
6l/min
9l/min
POPPET FLOW CONTROL CHARTS
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6
)
)
12
10
15
20
25
30
0
5
35
40
11.9
7
Type
Type
Drainage (L)
Discharge (T1)
Discharge (T)
Input (P)
To be necessarily connected to tank with maximum back-pressure 1 bar
Note: L (drain line for proportional control valves)
DIMENSIONS WITH BRACKETS
DIMENSIONS WITHOUT BRACKETS
ISO-228
Carry
Over (P1)
3/4” BSP1/2” BSP 1/2” BSP1/2” BSP3/8” BSP 1/4” BSP
(A-B)
G
THREADING
104 144 184 224 264 384
344
NVD2/1 NVD2/2 NVD2/3 NVD2/4 NVD2/5 NVD2/6 NVD2/7 NVD2/8
X (mm)
145 185 225 265 305 345 385 430Y (mm)
304
NVD2/1 NVD2/2 NVD2/3 NVD2/4 NVD2/5 NVD2/6 NVD2/7 NVD2/8
X’ (mm)
178.5 218.5 258.5 298.5 338.5 378.5 418.5 458.5
Y’ (mm)
155.5 195.5 235.5 275.5 315.5 355.5 395.5 435.5
NVD2
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7
OVERAL DIMENSIONS AND PORTS SIZE
IMEN I N WITH BRA KET
10,2 13,7 17,2 20,7 24,2 27,7 31,2 34,7
NVD2/1 NVD2/2 NVD2/3 NVD2/4 NVD2/5 NVD2/6 NVD2/7 NVD2/8
WEIGHTS
Kg
Type
20 40
411
69
40 20
Y
40 40 40 40
99
X
8
04
35
54
Y'
X'
N°4 Holes M8 prof.10
Port "L"
P
T
A
B
P1
T1
411
103
192
87
403
171
5
18°
18°
134,70
327
7
193,50
253,50
120
T
P
N°4 Slots Ø 9
8
AA
A
A
B BBB
Acronym
Use
Use
Acronym
11.9
8
D2
A
TYPE OF DVC (Directional Control Valve)
NVD2
= product name
/1
= number of work sections
B
SELECTION OF INLET MODULE
IL
=inlet side. . . . . . . . . . . . . . . . . . . . . . . . . . page 10
VM2 (180)
= type and ca
libration
of general
r
elief
valve (180 bar) . . . . . . . . . . . . . . . . . . . . . . . . page 11
VP
= pre-loading valve. . . . . . . . . . . . . . . . . page 12
VR
= reducing valve. . . . . . . . . . . . . . . . . . . page 12
C
SELECTION OF WORK SECTION*
= setting of work section. . . . . . . . . . . . . . page 14
W001A
= cursor. . . . . . . . . . . . . . . . . . . . . . . page 15
A12/B24
= shutters. . . . . . . . . . . . . . . . . . . . page 16
XE
= electro-hydraulic control valve. . . . . . . page 17
M12D
= proportional coil. . . . . . . . . . . . . . . . .page
18
H05
= level control . . . . . . . . . . . . . . . . . .
. . page 19
F01
= centering kit. . . . . . . . . . . . . . . . . . . . . page 20
C2A (180)/TCB
= auxiliary valves. . . . . . . . . .page 21
*
“C” ACRONYM MUST BE REPEATED, STARTING FROM THE INPUT MODULE, AS MANY TIMES AS THE SECTIONS COMPOSING THE DISTRIBUTOR.
ORDER EXAMPLE
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8
NVD2
NVD2/1 IL-VM2 (180)-VP-VR D2-W001A - A12/B24 - XE - M12D - H05 - F01 - C2A (180)/TCB ZN - EV - C12D U1-G SS
B
C
D
BA
C
D
E
F
F
D
SELECTION OF OUTLET MODULE
ZN
= closure module
EV
= dump valve. . . . . . . . . . . . . . . . . . . . . . . . . pa ge 23
C12D
= on/off coil. . . . . . . . . . . . . . . . . . . . . . . page 23
E
SELECTION OF INLET - OUTLET AND PORTS SIZE
U1
= input and output positions
. . . . . . . . . . . . . page 25
G
= threading. . . . . . . . . . . . . . . . . . . . . . . . . . .p age 25
F
TYPE OF FIXING
SS
= without
brakets . . . . . . . . . . . . . . .
. . . . . . .page 26
CS
= with brakets . . . . . . . . . . . . . . . . . . . . . . . . page 26
11.9
9
Reducing valve
Inlet module
General relief valve
Pre-loading valve
1
2
3
4
NVD2 inlet module has a P power supply connection and a T connection so that the connection
to the tank can be easily chosen either at the DCV inlet or outlet. The module is equipped with
a general relief valve and it integrates the pressure reducing valve (18 bar) for power supply to
the proportional electro-hydraulic controls. The pressure-reducing valve is equipped with a 30
µ lter for the protection of proportional electro-valves. At user’s choice, the input module can
host a pre-loading valve. This device is used to keep the standby pressure at a suitable level in
order to have a quick reaction by the proportional electro-hydraulic controls.
(to be specified always in the presence of V.Max.)
IL - VM2 (180) - VP - VR
Setting value
1
2
3
B
4
Order example:
DESCRIPTION
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9
NVD2
3
2
1
Inlet module
4
11.9
10
V
L
P
T
L port
(drain line connected to tank G 1/4)
V port
(reduced-pressure G 1/8)
IL
L
P
T
V
IR
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10
1. SIDE INLET MODULE
NVD2
Inlet module
11.9
11
T
L
P
V
L
P
T
V
Plug for valve
replacement.
Note:
- For the general features of the relief valve, see page 1.01.004a of
the general catalogue of NEM valves NEM.
- Tamper proof caps to be ordered separately.
Tamper proof cap code 9021030190
Direct relief valve
VM1
Spring 1
40-140 bar
DESCRIPTION SETTING RANGEACRONYM
Direct relief valve
VM2
Spring 2
120-250 bar
Direct relief valve
VM3
Spring 3
220-410 bar
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11
NVD2
2. TYPE AND SETTING OF GENERAL RELIEF VALVE
Inlet module
VM
SVM
11.9
12
VP
L
P
T
V
Inlet module
with reducing valve
Inlet module without
preloading valve
L
VR
P
T
V
TP
L
P
T
V
3. PRELOADING VALVE
4. PRESSURE REDUCING VALVE
NVD2
Inlet module
Inlet module with
preloading valve
Recommended for
inlet ow less than
25 l/min.
11.9
13
NVD2 work section consists of a spool and the electro proportional valves are related lever-kit,
control-kit, antishock valves and electro-hydraulic control valves. The latter are placed in the
lower part of the section and the ow poppet control can be reached by disassembling them.
In order to guarantee maximum functionality, the parts must be duly chosen according to the
features of the system. The spool must be proportional to the pump capacity, while the ow
poppet must be proportional to the desired ow capacity on A and B ports, which may be dif-
ferent along the same section (i.e. A12/ B24).
Work section
Spool
Flow poppet control
Electro-hydraulic control valve
Proportional coil
Lever control
Control side “B”
Antishock valve
1
2
3
4
5
6
7
8
NVD2
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13
1
2
3
3
4
4
5
5
6
7
8
8
Work section
DESCRIPTION
D2-W001A - A12/B24 - XE - M12D - H05 - F01 - C2A (180)/TCB
1
2
3
4 5 6 7 8
C
Order example
11.9
14
A B
Work section with
antishock valves
Work section without
antishock valves
NVD2
1. SETTING OF WORK SECTION
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14
Work section
D2
D1
A B
11.9
15
Double effect spool, 3 positions with A closed and B
dischar
g
ing in central position
Double effect spool, 3 positions with A partially
discharging and B closed in central position
Double effect spool, 3 positions with A and B partially
discharging in central position
Double effect spool, 3 positions with A discharging and B
closed in central position
Double effect spool, 3 positions with A closed and B partially
discharging in central position
Double effect spool, 3 positions with A and B discharging
in central
p
osition
Double effect spool, 3 positions with A and B closed
in central position
A
Capacity 40 litres
Capacity 20 litres
B
Capacity 10 litres
C
Capacity 30 litres
F
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15
NVD2
2. SPOOL
W001
Spool layout
W002
W002J
W002K
W002Y
W003
W004
Work section
Spool capacity
Note:
- The spool capacity has to be the same as the pump capacity, ± 5 l/min.
(i.e: 13 litre pump,10 litre cursor.)
A B
T P P T
T P P T
A B
T P
P T
A
B
T P
P T
A B
T P P T
A
B
T P
P T
A B
A B
P T
T P
W001
Layout
Capacity
A
11.9
16
Flow poppet control for capacity up to 40 l/min on port A
Flow poppet control for capacity up to 40 l/min on port B
Flow poppet control for capacity up to 36 l/min on port A
Flow poppet control for capacity up to 36 l/min on port B
Flow poppet control for capacity up to 30 l/min on port A
Flow poppet control for capacity up to 30 l/min on port B
Flow poppet control for capacity up to 24 l/min on port A
Flow poppet control for capacity up to 24 l/min on port B
Flow poppet control for capacity up to 18 l/min on port A
Flow poppet control for capacity up to 18 l/min on port B
Flow poppet control for capacity up to 12 l/min on port A
Flow poppet control for capacity up to 12 l/min on port B
Flow poppet control for capacity up to 9 l/min on port A
Flow poppet control for capacity up to 9 l/min on port B
Flow poppet control for capacity up to 6 l/min on port A
Flow poppet control for capacity up to 6 l/min on port B
Flow poppet control for capacity up to 3 l/min on port A
Flow poppet control for capacity up to 3 l/min on port B
Note: Chose the shutters whose capacity is as close as possible to the capacity
required for A and B;it is possible to choose different capacity for the two ports (i.e A12/B24)
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16
NVD2
3. SHUTTERS
Work section
port A
port B
A03 / B03
Shutter
A
Shutter
B
A06
A03
B03
B06
A09
B09
A12
B12
A18
B18
A24
B24
A36
B36
A40
B40
A30
B30
11.9
17
Replacement plug on port A
Proportional valve on port B
Proportional valve on port A
Replacement plug on port B
Plug for valve replacement on both
ports (A and B)
control on both ports (A and B)
Proportional valve for electro-hydraulic
Proportional electro-valves of NVD2 must be supplied with PWM. By adjusting the maximum
current value, it is possible to finely set the maximum flow to be supplied to each port. In order
to reduce control hysteresis as much as possible and guarantee the most reactive operation,
it is recommended to set the PWM carrier frequency at 60 Hz and anyhow not exceed 90 Hz.
Proportional electro-hydraulic control
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17
NVD2
4. ELECTRO-HYDRAULIC CONTROL VALVE
Work section
XE
XT
XA
XB
Note: For electrical characteristics see page 4.
port A
port B
11.9
18
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18
NVD2
5. PROPORTIONAL COIL
• Wire insulation class. . . . . . . . . . . . . . . . . . . . . . . . .H (>185°C)
• ED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100%
• Coil power at 20° C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 W
• Maximum current . . . . . . . . . . . . . . . . . 1,8 ± 10% A (12 V dc)
0,9 ± 10% A (24 V dc)
• Room temperature . . . . . . . . . . . . . . . . . . . . . . . . . -20 +40° C
• Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0,28 Kg
* Protection degree with connector assembled
Work section
Note: For different type of connectors ask NEM S.p.a Technical Department
DIN 43650 IP65* H
12 V dc 3,9 STANDARD
CONNECTOR
PROTECTION
DEGREE
CLASS OF
COIL
THERMAL
INSULATION
VOLTAGE
[V]
CIRCUIT
M12D
ACRONYM
RESISTANCE
[Ω]
DIN 43650 IP65* H 24 V dc 14,5 STANDARD
M24D
M12S
M24S
M12A
M24A
DEUTSCH
DEUTSCH
AMP JUNIOR
AMP JUNIOR
IP67* H 12 V dc 3,9 STANDARD
IP67* H 24 V dc 14,5 STANDARD
IP67* H 12 V dc 3,9 STANDARD
IP67* H 24 V dc 14,5 STANDARD
11.9
19
45° fixed lever
Control with low
fixed lever
Control with high 45°
NB:the handle rod has to
be ordered separately
(cod.9032061200)
r,
it can be
threaded M6 leve
Control with high 45°
disassembled
6. LEVER
NVD2
Work section
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19
H10
H15
H00
H05
Control without lever
11.9
20
position sensors*
centering with on/off
3 positions spring
spring centering
double control
kit with rod for
3 positions,
3 positions,
spring centering kit
* Sensors Features: Sphere-shaped position sensor,usually closed
with Packard Metri-pack wires and male connect
•
current range: 0.1-5.0 Amp DC
•
voltage range: 5.0-24.0 Vdc
•
temperature range: -30 a + 120 °C
• connector: Packard Metri-pack
• NC contact
7. SPOOL CENTERING
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20
NVD2
Work section
F01
F03
F02
11.9
21
Tamper-proof cap code 9021015101
Note :
- Show the desired calibrotion for both inlets into
brackets (Is. C1A(50) / TCB).
- Tamper proof caps to be ordered separately.
- For the general features of the auxiliary valve,
see page 1.01.002 NEM general catalougue
Spring 1
Spring 2
Spring 3
8. ANTISHOCK VALVE
NVD2
Work section
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21
port A
port B
C1
C2
C3
20-100 bar.
40-220 bar.
50-350 bar.
TC
Plug for valve
replacement
11.9
22
Dump valve
Coil
2
3
Outlet module
1
ZN - EV - C12D
2
3
D
1
2
3
1
Order example
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22
NVD2
Outlet module
DESCRIPTION
The NVD2 output side, as well as having two doors for distributor discharge, gives the
possibility to i nsert a general dump electrovalve t hat, in t he absence o f power supply,
ensures that the entire distributor does not operate. Besides, the module can be reset in
order to have double output (carry-over connection with other hydraulic devices).
11.9
23
M
(main pressure gauge G 1/4)
Inlet M
(manometer G 1/4)
ET
P1
T1
M
E
V
P1
T1
M
1. OUTLET MODULE
ZN
Closure module for settings with external drainage (page 10)
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23
NVD2
Outlet module
2. DUMP VALVE
Valve replacement plug
Dump valve
Dump valve typical curves
Push and
twist button
Push
button
No
emergency
EV0 EV4 EV5
0 10 20 30 40 50 60 70
10
8
6
4
2
0
Pressure [bar]
Flow [l/min]
11.9
24
3. COIL
NVD2
• Wire insulation class. . . . . . . . . . . . . . . . . . . . . . . . .H (>185°C)
• ED. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100%
• Coil power at 20° C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 W
• room temperature . . . . . . . . . . . . . . . . . . . . . . . . . . -20 +40° C
• Weigth. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0,28 Kg
Outlet module
DIN 43650 IP65* H
12 V dc 6,8 STANDARD
CONNECTOR
DEGREE
OF
PROTECTION
COIL
THERMAL
INSULATION
CLASS
VOLTAGE
[V]
CIRCUIT
C12D
ACRONYM
RESISTANCE
[Ω]
DIN 43650 IP65* H 24 V dc 24 STANDARD
C24D
C12S
C24S
C12A
C24A
DEUTSCH
DEUTSCH
AMP JUNIOR
AMP JUNIOR
IP67* H 12 V dc 6,8 STANDARD
IP67* H 24 V dc 24 STANDARD
IP67* H 12 V dc 6,8 STANDARD
IP67* H 24 V dc
24
STANDARD
* Degree of protection with connector assembled
Note: For different type of connectors ask NEM S.p.A. technical Department
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NVD2
POSITIONS AND PORT SIZE
Inlet-outlet position and ports size
threading (BSP)
ISO-228
Employement
Discharge (T)
Carry
Over (P1)
Input (P)
3/4” BSP1/2” BSP 1/2” BSP1/2” BSP3/8” BSP 1/4” BSP
Discharge (T1)
Inlets
(A-B)
Drainage (L)
Acronym
G
THREADING
U1
Connection
P-T
U1
U2
T
P
L
T1
P
L
U3
U4
P
T1
P1
L
P
P1
T
L
Port size
G
Delivery on (P)
Discharge on (T1)
Delivery (P)
Discharge on (T)
Delivery (P)
Discharge (T1)
Carry-over (P1)
Delivery (P)
Discharge (T)
Carry Over (P1)
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DCV with brackets
DCV without brackets
N°4 Eyelets Ø 9
N°4 Holes M8
prof. 10prof. 10
CS
SS
TYPE OF FIXING
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Note: You can see distances size of xing hole at page nr.7
NVD2
11.9
27
in neutral position
in neutral position
in neutral position
in neutral position
W001A 3114160101 Duoble effect spool,3
positions with A and B closed
W001B 3114160107 Duoble effect spool,3
positions with A and B closed
20 l/min flow.
W001C 3114160106 Double effect spool,3
positions with A and B closed
10 l/min flow.
W001F 3114160100 Double effect spool, 3
positions with A and B closed
30 l/min flow.
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SPARE PARTS CODE
1
5
4
3
2
6
7
7
8
8
9
9
10
11
12
13
14
15
16
17
12
1. INLET MODULE
TYPE CODE DESCRIPTION
IL 913NEM4010 Left-input module Kit
IR 913NEM4010 Right-input module Kit
5. WORK SECTION
TYPE CODE DESCRIPTION
D1 913NEM5000 Kit for work section without
antishock valve
D2 913NEM5010 Kit for work section with
antishock valve
2. GENERAL RELIEF VALVE
TYPE CODE DESCRIPTION
VM1 0023310000 Relief valve 40-140 bar
VM2 0023320000 Relief valve 120-250 bar
VM3 0023330000 Relief valve 220-410 bar
SVM 9273274600 Kit with plug for relief valve
replacement
4. REDUCING VALVE
TYPE CODE DESCRIPTION
VR N320271001 Reducing valve
3. PRECHARGE VALVE
TYPE CODE DESCRIPTION
VP N320271002 Precharge valve
TP N320271003 Kit with plug for replacement of
precharge valve
6. CURSOR
TYPE CODE DESCRIPTION
INLET MODULE WORK SECTION
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TYPE CODE DESCRIPTION
11. CONTROL FOR “B” INLET
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6. SPOOL
TYPE CODE DESCRIPTION
W002A 3114160105 Double effect cursor, 3
positions with A and B open in
central position for
40 l/min ow.
W002B 3114160111 Double effect cursor, 3
positions with A and B open in
central position for
20 l/min ow.
W002C 3114160110 Double effect cursor, 3
position with A and B open in
central position
10 l/min ow.
W002F 3114160103 Double effect cursor, 3
position with A and B open in
central position
30 l/min ow.
W002JA 3114160102 Double effect cursor, 3
position with A and B partially
open in central position for
40 l/min ow.
W002JB 3114160109 Double effect cursor, 3
position with A and B partially
open in central position for
20 l/min ow.
W002JC 3114160108 Double effect cursor, 3
position with A and B partially
open in central position for
10 l/min ow.
W002JF 3114160104 Double effect cursor, 3
position with A and B partially
open in central position for
30 l/min.
7. SHUTTERS
TYPE CODE DESCRIPTION
03 3207111307 Poppet ow control 3 l/min
06 3207111306 Poppet ow control 6 l/min
09 3207111309 Poppet ow control 9 l/min
12 3207111300 Poppet ow control 12 l/min
18 3207111308 Poppet ow control 18 l/min
24 3207111301 Poppet ow control 24 l/min
30 3207111312 Poppet ow control 30 l/min
36 3207111302 Poppet ow control 36 l/min
40 3207111304 Poppet ow control 40 l/min
8. ELECTROHYDRAULIC VALVE
TYPE CODE DESCRIPTION
XE 0PNV200004 Electrohydraulic valve
XT 9275225000 Kit of electrohydraulic
replacement cap
9. COIL
TYPE CODE DESCRIPTION
M12D 095001191 Coil CT9500 12Vdc DIN
M24D 095002191 Coil CT9500 24Vdc DIN
M12S 095111190 Deutsch DT A
M24S 095112190 Deutsch DT A
M12A 095211190 AMP Junior
M24A 095212190 AMP Junior
12. AUXILIARY VALVES
TYPE CODE DESCRIPTION
C1 0022010000 Relief valve 20-100 bar
C2 0022020000 Relief valve 40-220 bar
C3 0022030000 Relief valve 50-350 bar
TC 9273193600 Kit with plug for replacement of
antishock valve
OUTLET MODULE
13. CLOSURE MODULE
TYPE CODE DESCRIPTION
ZN 913NEM6010 Closure module kit for
external drainage
14. DUMP VALVE
TYPE CODE DESCRIPTION
EV0 0553010000 Dump valve
No emergency
EV4 0553010400 Dump valve
Em. Push
EV5 0553010500 Em. dump valve
Push & Twist
ET 9273274600 Kit with plug for dump valve
replacement
NVD2
10. LEVER
TYPE CODE DESCRIPTION
H00 9231400340 Kit without lever
H05 9228130357 Kit ready for M6 lever
9032061200 Auction with handle
H10 9038031322 Kit with 45° high lever
H15 9038031522 Kit with 45° low lever
SPARE PARTS CODE
F01 9231400340 Kit standard
F02 9231400501 Kit double control
F03 9231400504 Kit position sensors
w
9290050231 Kit spring+bushings+scre
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15. COIL
TYPE CODE DESCRIPTION
C12D 098011190 Coil CT9801 12Vdc din 24W
C24D 098012190 Coil CT9801 24Vdc din 24W
C12D 098111191 Deutsch DT A
C24D 098112190 Deutsch DT A
C12D 098211191 AMP Junior
C24D 098212190 AMP Junior
17. TIE ROD KIT
CODE DESCRIPTION
9296081401 Tie rod kit N°1 section without brackets
9296081801 Tie rod kit N°2 section without brackets
9296082201 Tie rod kit N°3 section without brackets
9296082601 Tie rod kit N°4 section without brackets
9296083001 Tie rod kit N°5 section without brackets
9296083401 Tie rod kit N°6 section without brackets
9296083801 Tie rod kit N°7 section without brackets
9296084201 Tie rod kit N°8 section without brackets
16. CARRY OVER
CODE DESCRIPTION
4293130130 Plug for Carry-over function
CONNECTION CAPS
4275211802 Plug for P - T - P1 connections
4275161402 Plug for A - B connections
4275272000 + 4343272500 Plug + Washer for T1 connection
4275131501 Plug for L connection
CODE DESCRIPTION
NVD2
SPARE PARTS CODE
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SEALS KIT
CODE DESCRIPTION
9NVD20000001 Seals kit x input section
9NVD20000003 Seals kit x intermediate section
9NVD20000004 Seals kit x general relief valve
9NVD20000005 Seals kit x reducing valve and precharge valve
9NVD20000006 Seals kit x antishock valve
9NVD20000007 Seals kit x all closed 10/2 cap replacement
9NVD20000008 Seals kit x pilot valve
9NVD20000009 Seals kit x pilot valve replacement cap
9NVD20000010 Seals kit x dump valve
9296081402 Tie rod kit N°1 section with brackets
9296081802 Tie rod kit N°2 section with brackets
9296082202 Tie rod kit N°3 section with brackets
9296082602 Tie rod kit N°4 section with brackets
9296083002 Tie rod kit N°5 section with brackets
9296083402 Tie rod kit N°6 section with brackets
9296083802 Tie rod kit N°7 section with brackets
9296084202 Tie rod kit N°8 section with brackets
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High pressure (>200 bar),
proportional valves,
vulnerable to contamination
Average pressure
systems (<200 bar
)
The data dened on the catalogue refer to our standard products. Special applications are possible and must be previously agreed with our
Technical Department. This catalogue cannot be integrated and, in case of doubts, ask NEM S.p.A. Commercial and Technical Department for
clarications. The data shown on this catalogue are not binding for NEM S.p.A. and NEM S.p.A. reserves to make changes and improvements
without any notice.
The manufacturer will not be liable in case of damages to people or things due to improper use of the product.
It is recommended to use mineral-base oils with physical-chemical
properties suitable for oil hydraulic systems (i.e. HLP in accordance
with DIN 51524). All functional tests and calibrations are performed
with 46 CSt viscosity oil at 40° C temperature.
The conditions of the uid used in oil hydraulic systems are very
important. If too contaminated, it will wear the parts, make the oil
age more rapidly and therefore the machine will not work efciently.
Filtering is important in order to guarantee the best operations and
long life of oil hydraulic equipment. Filtering devices must be chosen
according to the characteristics of the system. In general, follow the
table underneath for choosing the lters.
O - RING. These are mixes of butadiene/acrylonotrile (BUNA - N or
NBR in accordance with ASTM standard). The ASTM D 76 standard
denes embrittlement temperature (-30° C +125°C). For higher tem-
perature contact our technical Department.
The valves are made of high-quality steel, with the moving parts
hardened and grinded or lapped.
The bodies are made of aluminium or steel, depending on thema-
ximum operating pressure.
These two numbers respectively dene the quantity of particles with
diameter more than 5 and 15 micron in 1 ml of oil.
X
=
5
-
10
m
i
cron
Table:
Tipy of system
Nominal filtration
micron
Absolute filtering
Contamination class
ISO4406 NAS1653
5 17/14 8
10
X=10-15 micron
18/14 9
Choosing the type of filtration
According to ISO DIN standards, it is expressed with ISO - VG, which
defines average viscosity at 40° C (mm 2/s or centistokes - cSt). The
viscosity recommended for the correct operations of NEM parts is:
from 15 cSt to 250 cSt.
GENERAL FEATURES
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NVD2
This number denes the quantity of particles, of different size, con-
tained in 100 ml of oil.
FILTERING
VISCOSITY CLASS
TYPES OF WASHER
MATERIALS
CONTAMINATION CLASS IN ACCORDANCE WITH ISO 4406
CONTAMINATION CLASS IN ACCORDANCE WITH NAS 1653
HYDRAULICS OILS
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7.1 Should the products supplied by Nem not be compliant or have
the required quality and should this defect be due to Nem, Nem s.p.a.
commits, at its choice, to replace or repair the faulty products, as long
as the defect or lack of compliance is notied to Nem s.p.a. in writing,
as specied at point 6, within and no later than 18 months from pro-
duct delivery.
7.2 On the products that have been xed or replaced in accordance
with what specied above, the above-mentioned warranty applies.
The 18-month duration starts from the date of repair or replacement.
7.3 In case of defects, lack of quality or in case of lack of complian-
ce for the supplied products, with the exception of fraud or serious
offence, Nem s.p.a. only commits to repairing or replacing the faulty
products, according to what specied above.
7.4 This warranty replaces any other Supplier’s warranty or liabili-
ty established by the law. This warranty excludes any other liability
– contractual or extra-contractual – by Nem s.p.a. on the products
supplied by Nem (as a mere example: damage refund, loss of prot,
product recall campaign, etc).
7.5 Nem s.p.a. has signed a product civil liability police, with a suitable
maximum coverage.
9.1 Nem s.p.a. commits to not disclosing the technical and commer-
cial information it receives from the Customer, unless this information
has already been publicly disclosed.
8.1 The products supplied by Nem s.p.a. will be owned by the latter
until Nem receives the complete payment for the supplied goods.
6.1 Any claims about defects on delivered products (just as an exam-
ple: claims about the packaging, the number, the quantity or the exter-
nal product characteristics) will have to be notied to Nem s.p.a. in
writing, within and no later than 7 days from reception of the goods,
otherwise the claims will be considered as null and void.
6.2 Occult defects (the defects of the goods that cannot be spotted
with a careful control of the goods received by the Customer), will
have to be notied in writing to Nem s.p.a. within 7 days from the
discovery of the defect, and anyhow no later than 18 months from the
delivery of the goods, otherwise the claim will be considered as null
and void.
6.3 Even in case of claim or objection, the Customer will never be en-
titled to suspend or delay the payments to Nem s.p.a. for the products
subject to claim or objection nor for any other supply.
5.1 Nem s.p.a. commits to supplying good quality products, com-
pliant with the technical specications declared on the technical ta-
bles and on the catalogue.
5.2 Nem s.p.a, even without notice, at its own discretion, reserves
the right to modify the products as necessary, without these changes
altering the main characteristics of the products.
4.1 The goods are always supplied Ex Works, even when Nem s.p.a.
agrees with the Customer that the shipment, or a part of it, will be
arranged by Nem s.p.a.
4.2 It is agreed that the Customer will bear the risk of goods deterio-
ration or damaging from the moment the goods are handed by Nem
s.p.a. to the rst carrier
.
3.1 The Parties agree on the payment terms at the beginning of the
supply. The terms will be indicated on the order conrmation.
3.2 Should the Customer be late with the payments, Nem S.p.a. will
be entitled to require the payment of interests on arrears based on
the exiting Prime Rate increased by 2%
3.3 Should there be any payment delay, Nem s.p.a. will be entitled
not to process the Customer’s purchase order, even if it has already
been conrmed.
2.1 No Customer’s order is binding to Nem s.p.a. if Nem s.p.a. has not
conrmed the order in writing.
2.2 Nem s.p.a. commits to supplying the orders in compliance with the
order conrmation that has been issued.
2.3 Any disagreement with the content of the order conrmation must
be communicated in writing to Nem s.p.a. within and no later than 5
days from the delivery of the order conrmation.
2.4 The Customer commits to paying for the goods supplied by Nem
s.p.a., according to the prices indicated on the order conrmation.
1.1 These general conditions apply to all general supplies from Nem
s.p.a., after receiving orders from the Customer.
1.2 Should commercial terms such as EXW, DDP, etc be mentioned,
of course the Incoterms of the International Chamber of Commerce
must be referred to, according to the test existing when the general
supply conditions are agreed on.
1. INTRODUCTION
2. MAGNAMENT OF ORDERS
GENERAL CONDITIONS
3. PAYMENT CONDITIONS
4. DELIVERY AND SHIPMENT
5. PRODUCT CHARACTERISTICS
6. CLAIMS
7. WARRANTY
8. OWNERSHIP RETENTION
9. OBLIGATION CONFIDENTIALITY
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11.9
32
11.1 Nem s.p.a.’s supplies are regulated by these General Supply
Conditions and, for anything not dened here, by the Italian law.
11.2 Any controversy related, generated or connected to the sup-
ply of Products by Nem s.p.a., where Nem s.p.a. is involved, will be
exclusively dealt with by the Court of Reggio Emilia.
10.1 The Customer is not allowed to use the provided Products, or a
part of them, their descriptions or drawings – protected or not protected
by Patent or registered trademark – in order to design or make similar
products, unless Nem s.p.a. previously issues its written authorization.
10.2 Should Nem s.p.a. give its written authorization, all patents, tra-
demarks, registered designs, copyrights and intellectual property rights
related or connected to the Products provided by Nem s.p.a. will stay
Nem s.p.a.’s property. The Customer commits to respecting the highest
condentiality.
10. PATENTS 11. APPLICABLE LAW AND COURT OF JURISDICTION
GENERAL CONDITIONS
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