EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009H-370.A
An Eaton Brand
H
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
NV1-20 - Flow Restrictor Valve
Needle
265 L/min (70 USgpm) • 210 bar (3000 psi)
Operation
This needle valve is non-
pressure compensated. Flow is
controlled in the direction from
port 2 to port 1, from full flow
to tight shut-off, by turning the
adjustment feature clockwise.
The flow from port 1 to port 2
will be restricted.
Pressure Drop Curves
Cartridge only
Features
Hardened and ground working
components. Cartridge
construction for maximum
mounting flexibility.
Pressure drop - psi
Pressure drop - bar
Flow - USgpm (105 SUS oil @ 120°F)
Flow - L/min (21,8 cSt oil @ 49°C)
70
60
50
40
30
20
10
0
5
4
3
2
1
0
0 40 80 120 160 200 240
0 10 20 30 40 50 60 70
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 conjunction
with a pressure compensator
Total shut off can be achieved
allowing the valve to be used
as a shut of 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) 210 bar (3000 psi)
Cartridge fatigue pressure (infinite life) 210 bar (3000 psi)
Rated flow 265 L/min (70 USgpm)
Internal leakage 5 drops/min maximum @ 210 bar (3000 psi)
Temperature range -40° to 120°C (-40° to 248°F)
Cavity C–20–2
Fluids All general purpose hydraulic fluids such as:
MIL-H-5606, SAE 10, SAE 20 etc.
Filtration
Cleanliness code 18/16/13
Standard housing material Aluminum
Weight cartridge only 0,59 kg. (1.3 lbs)
Seal kit 889615 (Buna-N), 889619 (Viton
®
)
Viton is a registered trademark of E.I. DuPont
Performance Data
Sectional View
2
1
Full open port 2 to port 1
1
2
EATON Screw-In Cartridge Valves E-VLSC-MC001-E December 2009 H-371.A
An Eaton Brand
H
Where measurements are critical request certified drawings. We reserve the right to change specifications without notice.
NV1-20 - Flow Restrictor Valve
Needle
265 L/min (70 USgpm) • 210 bar (3000 psi)
Code Port Size Housing Number
Aluminium Aluminium
Light duty Fatigue rated
0 Cartridge only
8B 1" BSPP 02-175464 –
16T SAE 16 566409 –
6G 3/4" BSPP – 876732
8G 1" BSPP – 876734
12H SAE 12 – 876733
16H SAE 16 – 876735
See section J for housing details.
1
Function
NV1 - Needle valve
2
Size
20 - 20 size
3
Seal Material
Blank - Buna-N
V - Viton
®
4
Adjustment Means
K - Knob (black)
R - Knob (red)
2
1
Ø61,0
(2.40)
62,0
(2.44)
57,1
(2.25)
Ø36,47 (1.436)
1.625 "-12 Thd.
47,6 (1.87) hex
Model Code
2 31
NV1
20
(V)
5
**
6
00
4
*
6
Special Features
00 - None
(Only required if valve has special
features, omit if ("00")
5
Port Size
Torque cartridge in
aluminum housing
128-155 Nm (95-115 ft lbs)
Dimensions
mm (inch)
Cartridge Only
Basic Code
NV1-20
76.2
(3.00)
75.4
(2.97)
101.6
(4.00)
10.3
(0.41)
101.6
(4.00)
2X 8.74
(0.344)
36.0
(1.42)
41.3
(1.62)
61.9
(2.44)
Ø60.5
(2.38)
1
2
Installation Drawing
– – ––
