Needle Valve
Series NVH081
Catalog HY15-3501/US
FC7
Check
Valves
Shuttle
Valves
Load/Motor
Controls
Flow
Controls
Pressure
Controls
Logic
Elements
Directional
Controls
Manual
Valves
Solenoid
Valves
Proportional
Valves
Coils &
Electronics
Bodies &
Cavities
Technical
Data
SH
CV
LM
FC
PC
LE
DC
MV
SV
PV
CE
BC
TD
Parker Hannifin Corporation
Hydraulic Cartridge Systems
Technical Information
Specifications
Rated Flow Fixed 37.9 LPM (10 GPM)
Adjusted
Maximum Inlet 380 Bar (5500 PSI)
Pressure
Cartridge Material All parts steel. All operating
parts hardened steel.
Operating Temp. -45°C to +93.3°C (“D”-Ring)
Range/Seals (-50°F to +200°F)
-31.7°C to +121.1°C (Fluorocarbon)
(-25°F to +250°F)
Fluid Mineral-based or synthetic with
Compatibility/ lubricating properties at viscosities
Viscosity of 45 to 2000 SSU (6 to 420 cSt)
Filtration ISO Code 16/13,
SAE Class 4 or better
Approx. Weight .10 kg (.20 lbs.)
Cavity No. C08-2
(See BC Section for more details)
Form Tool Rougher None
Finisher NFT08-2F
General Description
Cartridge Style Needle Valve.
For additional information see
Technical Tips on pages FC1-FC4.
Features
•
Hardened, precision ground parts for durability
•
Compact size for reduced space requirements
•
Fine adjustment needle option available for precise
adjustment
•
Polyurethane “D”-Ring eliminates backup rings and
prevents hydrolysis
•
Valve meters flow in either direction, but (2 to 1) is the
preferred direction for lowest leakage at shut off
•
All external parts zinc plated
Performance Curves
Flow vs. Inlet Pressure (Through cartridge only)
(2)(1)
Flow (Q)
22.7
6
7.6
2
15.1
4
LPM
GPM
0
30.3
8
37.9
10
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
100
200
500 34.5
20.7
27.6
6.9
13.8
300
400
PSI Bar
Pressure Drop ( P)
Coarse
Adjustment
1 Turn
2 Turns
3 Turns
Full Open
Flow (Q)
22.7
6
7.6
2
15.1
4
LPM
GPM
0
30.3
8
37.9
10
Hydraulic Oil 150 SSU @ 100°F (32 cSt)
0
100
200
500 34.5
20.7
27.6
6.9
13.8
300
400
PSI Bar
Pressure Drop ( P)
1 Turn
2 Turns
3 Turns
Full Open
Fine
Adjustment
(2)
(1)
COARSE
ADJUSTMENT
(2)
(1)
FINE
ADJUSTMENT
Catalog HY15-3501/US
Needle Valve
Series NVH081
FC8
Check
Valves
Shuttle
Valves
Load/Motor
Controls
Flow
Controls
Pressure
Controls
Logic
Elements
Directional
Controls
Manual
Valves
Proportional
Valves
Coils &
Electronics
Technical
Data
SH
CV
LM
FC
PC
LE
DC
MV
SV
PV
CE
BC
TD
Bodies &
Cavities
Solenoid
Valves
Parker Hannifin Corporation
Hydraulic Cartridge Systems
Technical Information
THIRD-ANGLE
PROJECTION
Ordering Information
Dimensions
Millimeters (Inches)
SealsAdjustment
Style
Body
Material
Port
Size
Code Seals / Kit. No.
Omit “D”-Ring / (SK08-2)
N Nitrile / (SK08-2N)
V Fluorocarbon /
(SK08-2V)
Code Adjustment Style
K Knob Adjust (717784-10)
S Screw Adjust
T Tamper Resistant Cap (717943)
Code Body Material
Omit Steel
A Aluminum
08 Size
Needle Valve
NVH081
Flow
Needle
Code Flow Needle
Omit Coarse
F Fine
Code Port Size Body Part No.
Omit Cartridge Only
4P 1/4″ NPTF (B08-2-*4P)
6P 3/8″ NPTF (B08-2-*6P)
4T SAE-4 (B08-2-*4T)
6T SAE-6 (B08-2-*6T)
6B 3/8″ BSPG (B08-2-*6B)
(1)
(2)
Screw/Knob Version
36.6
(1.44)
36.6
(1.44)
3/4-16 UNF-2A
Thread
25.4 (1.0)
Dia. Knob
Tamper Resistant Version
7/8" Hex.
31-37 Nm
(23-27 lb. ft.)
Torque
42.4
(1.67)
27.2
(1.07)
12.6
(.50)
(1)
(2)
* Add “A” for aluminum, omit for steel.
