EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009H-342.A
An Eaton Brand
H
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
NV1-8 - Flow Restrictor Valve
Needle
45 L/min (12 USgpm) • 280 Bar (4000 psi)
Operation
This needle valve is a variable
orifice used to create a
pressure drop when flow
passes from port 1 to port 2 or
port 2 to 1. Clockwise rotation
of the adjust screw decreases
Pressure Drop
Cartridge only
the orifice size to completely
closed and anti-clockwise
increases the orifice. The
setting can be locked using the
lock nut on the adjust screw.
Features
Hardened and ground working
components. Cartridge
construction for maximum
mounting flexibility.
Description
This is a manually adjusted
cartridge type needle valve.
With fine control it is ideal
for none compensated speed
control of actuators or as a
control orifice in conjuntion
with a pressure compensator.
Total shut off can be achieved
allowing the valve to be used
as a shut off valve.
Ratings and Specifications
Performance data is typical with fluid at 21,8 cSt (105 SUS) and 49°C (120°F)
Typical application pressure (all ports) 350 bar (5000 psi) steel housing
210 bar (3000 psi) aluminum housing
Cartridge fatigue pressure (infinite life) 280 bar (4000 psi)
Rated flow 45 L/min (12 USgpm)
Internal leakage 5 drops/min. maximum @ 350 bar (5000 psi)
Temperature range -40° to 120°C (-40° to 248°F)
Cavity C–8–2
Fluids All general purpose hydraulic fluids such as:
MIL–H–5606, SAE 10, SAE 20, etc.
Filtration Cleanliness code 18/16/13
Standard housing materials Aluminum or steel
Weight cartridge only 0,07 kg. (0.15 lbs.)
Seal Kits 02-165875 Buna–N
02-165877 Viton
®
Viton is a registered trademark of E.I. DuPont
Performance Data
Sectional View
Dynamic Signal (PFRD)
Fully open port 1 to port 2 or port 2 to port 1
1
2
0 5 10
0
50
100
150
200
0 20 30 40
0
Pressure drop - psi
Pressure drop - bar
Flow - L/min (21,8 cSt oil @ 49°C)
4
8
12
12
10
Flow - USgpm (105 SUS oil @ 120°F)
1
2
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 H-343.A
An Eaton Brand
H
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
NV1-8 - Flow Restrictor Valve
Needle
45 L/min (12 USgpm) • 280 Bar (4000 psi)
Code Port Size Housing Number
Aluminium Steel
Fatigue duty Fatigue rated
0 Cartridge only
4T SAE 4 02–160730 02-160736
6T SAE 6 02–160731 02-160737
8T SAE 8 02–160732 02–160738
2G 1/4” BSPP 02–160727 02-160733
3G 3/8” BSPP 02–160728 02-160734
See section J for housing details.
1
Function
NV1 - Needle valve
2
Size
8 - 8 size
3
Seal Material
Blank - Buna-N
V - Viton
®
4
Style
S - Screw
C - Cap
K - Knob
5
Valve Housing Material
Omit - Cartridge only
S - Steel
A - Aluminum
Dimensions
mm (inch)
Model Code
2 31
NV1 8 (V)
6
**
7
00
4
*
7
Special Features
00 - None
(Only required if valve has special
features, omit if ("00")
6
Port Size
Cartridge Only
Basic Code
NV1-8
Torque cartridge in
aluminum or steel housing
34-41 Nm (25-30 ft lbs)
27,8
(1.09)
0.750"–16 Thd.
22,1 (0.87) hex
12,7 (.50) hex
"C" Adjustment
2
1
Ø12,62 (0.497)
33,3
(1.31)
•
WARNING
Aluminum housings
can be used for
pressures up to 210 bar (3000
psi). Steel housings must be
used for operating pressures
above 210 bar (3000 psi).
5
(*)
– – – – – –
