SUN HYDRAULICS
NFDD-LGV
NFDDLGV
$56.19 USD
- SUN HYDRAULICS
- Material:NFDDLGV
- Model:NFDD-LGV
- Summary:Cartridge
Quantity in stock: 0
***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Sun Hydraulics directly.***
The Sun Hydraulics NFDDLGV (Material Number: NFDDLGV) is a versatile needle valve designed for precision flow regulation. This fully adjustable orifice allows for seamless control from a completely closed state to the maximum orifice diameter, making it suitable for various applications requiring precise flow management. It features a balanced adjustment mechanism that ensures easy operation even under high-pressure conditions, up to 5000 psi (350 bar). The valve's sharp-edged orifice design minimizes flow variation due to changes in fluid viscosity, offering consistent performance. The NFDDLGV model is compatible with all 2-port flow control cartridges of the same frame size, ensuring interchangeability with similar products. It supports bidirectional flow, with a preferred path from port 1 to port 2 for optimal interchangeability. The valve exhibits zero leakage when fully shut off, enhancing system reliability and efficiency. This model has a capacity of 50 gpm (200 L/min) and fits into a T-5A cavity series. It requires an installation torque of 45-50 lbf ft (61-68 Nm) and features adjustment capabilities that span 5.5 counterclockwise turns from fully closed to open. The internal hex size for adjustments is 5/32 inches (4 mm), while the locknut hex size is 9/16 inches (15 mm), requiring a torque of 80-90 lbf in (9-10 Nm). Cartridges configured with EPDM seals are suitable for systems using phosphate ester fluids but should avoid petroleum-based substances to prevent damage. The NFDDLGV model weighs approximately .60 lb (0.30 kg) and includes the option of a Viton seal kit under cartridge number 990203006 for enhanced durability and compatibility with various fluid types.
The Sun Hydraulics NFDDLGV (Material Number: NFDDLGV) is a versatile needle valve designed for precision flow regulation. This fully adjustable orifice allows for seamless control from a completely closed state to the maximum orifice diameter, making it suitable for various applications requiring precise flow management. It features a balanced adjustment mechanism that ensures easy operation even under high-pressure conditions, up to 5000 psi (350 bar). The valve's sharp-edged orifice design minimizes flow variation due to changes in fluid viscosity, offering consistent performance. The NFDDLGV model is compatible with all 2-port flow control cartridges of the same frame size, ensuring interchangeability with similar products. It supports bidirectional flow, with a preferred path from port 1 to port 2 for optimal interchangeability. The valve exhibits zero leakage when fully shut off, enhancing system reliability and efficiency. This model has a capacity of 50 gpm (200 L/min) and fits into a T-5A cavity series. It requires an installation torque of 45-50 lbf ft (61-68 Nm) and features adjustment capabilities that span 5.5 counterclockwise turns from fully closed to open. The internal hex size for adjustments is 5/32 inches (4 mm), while the locknut hex size is 9/16 inches (15 mm), requiring a torque of 80-90 lbf in (9-10 Nm). Cartridges configured with EPDM seals are suitable for systems using phosphate ester fluids but should avoid petroleum-based substances to prevent damage. The NFDDLGV model weighs approximately .60 lb (0.30 kg) and includes the option of a Viton seal kit under cartridge number 990203006 for enhanced durability and compatibility with various fluid types.
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 and may be used as flow controls or as shutoff valves.
- 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.
| Cavity | T-5A |
| Series | 2 |
| Capacity | 50 gpm (.5 inch)200 L/min. (12,7 mm) |
| Maximum Operating Pressure | 5000 psi350 bar |
| Adjustment - Number of Counterclockwise Turns - Fully Closed to Fully Open | 55 |
| Valve Hex Size | 1 1/8 in.28,6 mm |
| Valve Installation Torque | 45 - 50 lbf ft61 - 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 lb0,30 kg |
| Seal kit - Cartridge | Viton: 990-203-006 |
Show FAQ
Additional Resources
- QuickDesign with SmartConnect Offers Drag-and-Drop Schematic Tool
- Sun Expands Corrosion-Resistant Solutions
- Series 4 PLUS Cartridges Offer Higher Flows with Lower Pressure Losses
- Sun Offers Zinc-Nickel Plating for Corrosion Resistance
- Sun Cartridges with EPDM Seals
- Manufacturing Sun Cartridge Cavities
- Check, Flow Control, and Priority Flow Control Valves
- Fluid and Temperature Recommendations
- Sun's Floating Style Screw-In Cartridge
- Performance Data
- Sun Model Code Explanation; 999-901-334
- Units of Measure, Settings, and Conversions
- Cartridges: Materials of Construction
- Cavity Information (S-171) and Tooling
Notes:
- For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 mm) diameter hole is required in the panel.