NFDD-LGN – Sun Hydraulics Fully adjustable needle valve
Part number: NFDDLGN · NFDD-LGN · NFDD LGN
Fully adjustable needle valve. Cavity T-5A, capacity 50 gpm (.5 inch) (200 L/min. (12,7 mm)). Genuine Sun Hydraulics cartridge — MultiFlow is an authorized distributor.
NFDD-LGN overview
NFDDLGN (NFDD-LGN, NFDD LGN) is a Sun Hydraulics Sun Hydraulics Fully adjustable needle valve, rated 50 gpm (.5 inch) (200 L/min. (12,7 mm)) and installed in cavity T-5A. MultiFlow supplies genuine Sun Hydraulics cartridges in the UAE, GCC and India — use Add to Enquiry above for availability and a quotation.
Ordering codes
Pick the code that matches the material and finish you need. Add it to your enquiry above, or tap a code to select it.
| NFDDLGN/AP | Stainless Steel, PassivatedStainless Steel, Passivated |
|---|---|
| NFDDLGN/LH | Mild Steel, Zinc-NickelMild Steel, Zinc-Nickel |
| NFDDLGN | Standard Material/CoatingStandard Material/Coating |
Specifications
| Cavity | T-5A |
|---|---|
| Series | 2 |
| Capacity | 50 gpm (.5 inch) (200 L/min. (12,7 mm)) |
| Maximum Operating Pressure | 5000 psi (350 bar) |
| Adjustment - No. of CCW Turns from Fully Closed to Fully Open | 5 |
| Valve Hex Size | 1 1/8 in. (28,6 mm) |
| Valve Installation Torque | 45 - 50 lbf ft (61 - 68 Nm) |
| Adjustment Screw Internal Hex Size | 5/32 in. (4 mm) |
| Locknut Hex Size | 9/16 in. (15 mm) |
| Locknut Torque | 80 - 90 lbf in. (9 - 10 Nm) |
| Model Weight | .60 lb (0,30 kg) |
| Seal kit - Cartridge | Viton: 990203006 |
For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 mm) diameter hole is required in the panel.
How to read NFDDLGN
Sun part numbers are the model followed by one code per option. Hyphens, slashes and spaces are only dividers, so NFDDLGN, NFDD-LGN, NFDD LGN are the same part.
| Model | NFDD — Sun Hydraulics Fully adjustable needle valve |
|---|---|
| Control | L — Standard Screw Adjustment |
| Maximum Orifice Diameter | G — .5 in. (12,7 mm) |
| Seal Material | N — Buna-N |
| Material / coating | Add /AP (stainless steel, passivated) or /LH (mild steel, zinc-nickel) to the end; no suffix is the standard finish. |
Control options
- H — Calibrated Handknob with Detent Lock
- K — Handknob
- L — Standard Screw Adjustment
- Y — Tri-Grip Handknob
- O — Handknob with Panel Mount
Maximum Orifice Diameter options
- G — .5 in. (12,7 mm)
Seal Material options
- N — Buna-N
- V — Viton
- E — EPDM
Material/coating options
- /AP — Stainless Steel, Passivated
- /LH — Mild Steel, Zinc-Nickel
- — Standard Material/Coating
Manifold & standard assemblies
Sun manifolds for cavity T-5A (106)
- CDX Sun Hydraulics ISO 08: T to A and B Sandwich manifoldNFDDLGN-CDX — request assembly
- DAA Sun Hydraulics Ninety degree Line mount manifoldNFDDLGN-DAA — request assembly
- DAB Sun Hydraulics Ninety degree Line mount manifoldNFDDLGN-DAB — request assembly
- DAC Sun Hydraulics Ninety degree Line mount manifoldNFDDLGN-DAC — request assembly
- DAD Sun Hydraulics Ninety degree Line mount manifoldNFDDLGN-DAD — request assembly
- DAI Sun Hydraulics Ninety degree Line mount manifoldNFDDLGN-DAI — request assembly
- DAJ Sun Hydraulics Ninety degree Line mount manifoldNFDDLGN-DAJ — request assembly
- DAK Sun Hydraulics Ninety degree Line mount manifoldNFDDLGN-DAK — request assembly
- DAL Sun Hydraulics Ninety degree Line mount manifoldNFDDLGN-DAL — request assembly
- DAT Sun Hydraulics Ninety degree Line mount manifoldNFDDLGN-DAT — request assembly
- DAU Sun Hydraulics Ninety degree Line mount manifoldNFDDLGN-DAU — request assembly
- DAV Sun Hydraulics Ninety degree Line mount manifoldNFDDLGN-DAV — request assembly
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.
Drawings, symbol & performance curves
Downloads
Datasheet
Technical reference sheets
- 999-901-334 (PDF 344 KB)
- FloatingStyleScrewInCartridge2 (PDF 1 MB)
- TT_US_Cavity-New (PDF 522 KB)
- TT_US_check-flow1-New (PDF 537 KB)
CAD files
Frequently asked questions
Is NFDDLGN the same as NFDD-LGN?
Yes. Sun Hydraulics writes this part number as NFDDLGN. It is the model NFDD followed by the configuration code; hyphens, slashes and spaces are only dividers, so NFDDLGN, NFDD-LGN, NFDD LGN all refer to the same product.
Do you supply NFDDLGN in the UAE, GCC and India?
Yes. MultiFlow supplies genuine Sun Hydraulics cartridges, including NFDDLGN, to customers in the UAE, the wider GCC and India. Use Add to Enquiry on this page for availability, lead time and a quotation.
Can I get the datasheet and CAD files?
Yes. The datasheet, technical reference sheets and CAD files (DXF, DWG, STP) are listed in the Downloads section of this page.
How big is a drop of hydraulic oil?
There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
What parts of the Sun cartridge valve are field serviceable?
Manufacturer reference: https://www.sunhydraulics.com/model/NFDD
