Created on 10/05/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 1 of 2
MODEL
NFFC
Fully adjustable needle valve
SERIES 4 / CAPACITY: 240 L/min. (14,2 mm) / CAVITY: T-18A
Needle valves are fully adjustable orifices used to regulate flow. They are infinitely adjustable from fully closed up to
the maximum orifice diameter. They are not pressure-compensated. They may be used as flow controls or as
shutoff valves.
TECHNICAL DATA
Maximum Operating Pressure 350 bar
Adjustment - Number of Counterclockwise Turns - Fully Closed to Fully Open 5
Locknut Hex Size 15 mm
Locknut Torque 9 - 10 Nm
Seal kit - Cartridge Buna: 990-018-007
Seal kit - Cartridge EPDM: 990-018-014
Seal kit - Cartridge Polyurethane: 990-018-002
Seal kit - Cartridge Viton: 990-018-006
(L)CONTROL
L Standard Screw Adjustment
H Calibrated Handknob with Detent Lock
K Handknob
Y Tri-Grip Handknob, Flow Control
(G)MAXIMUM ORIFICE DIAMETER
G .56 in. (14,2 mm)
H .38 in. (9,7 mm)
(N)SEAL MATERIAL
N Buna-N
E EPDM
V Viton
MATERIAL/COATING
Standard Material/Coating
/AP Stainless Steel, Passivated
snhy.com/NFFC
TECHNICAL FEATURES
All 2-port flow control cartridges are physically and functionally interchangeable (i.e. same flow path, same cavity for a given frame size). However, cartridge
extension dimensions from the mounting surface may vary.
Because needle valves are non-compensating devices, the fixed orifice size will regulate flow through the valve in proportion to the square root of the pressure
differential across ports 1 and 2.
A balanced adjustment mechanism allows for easy adjustment even at high pressures.
The sharp-edged orifice design minimizes flow variations due to viscosity changes.
The flow path through this valve is bi-directional. The preferred path is port 1 to 2, to allow interchangeability with other flow controls.
There is no leakage when the adjustment mechanism is turned to the shut-off position.
Cartridges configured with EPDM seals are for use in systems with phosphate ester fluids. Exposure to petroleum based fluids, greases and lubricants will damage
the seals.
Model Code Example: NFFCLGNCONFIGURATION OPTIONS
Created on 10/05/2015
c
2015 Sun Hydraulics Corporation See www.sunhydraulics.com for detailed product information 2 of 2
PERFORMANCE CURVES
