SUN HYDRAULICS
NFFDLIV
$221.60 USD
Tags:
- SUN HYDRAULICS
- Material:NFFDLIV
- Model:NFFD-LIV
- 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 NFFDLIV (Material Number: NFFDLIV) is a versatile needle valve designed for precise flow regulation in hydraulic systems. This fully adjustable orifice allows for infinite adjustments from completely closed to the maximum orifice diameter, making it suitable for use as either a flow control or shutoff valve. Although not pressure-compensated, the valve effectively regulates flow based on the square root of the pressure differential across its ports. It features a balanced adjustment mechanism, ensuring easy operation even under high pressure conditions. The sharp-edged orifice design minimizes variations in flow due to changes in fluid viscosity, and its bidirectional flow path offers flexibility in installation with a preferred direction from port 1 to 2 for interchangeability with other controls. The valve ensures zero leakage when fully shut off. This model fits into the Cavity T-18A Series 4 and has a capacity of up to 140 gpm (530 L/min) and can withstand a maximum operating pressure of 5000 psi (350 bar). It requires an installation torque between 350 - 375 lbf ft (474 - 508 Nm) and features an adjustment range that spans 5.5 counterclockwise turns from fully closed to open. Additionally, it includes EPDM seals suitable for systems utilizing phosphate ester fluids, though these seals should not be exposed to petroleum-based substances as they may incur damage. The NFFDLIV model weighs approximately 3 pounds (1.35 kg) and has specific dimensions for hex sizes and locknut torques essential for proper installation and maintenance.
The Sun Hydraulics NFFDLIV (Material Number: NFFDLIV) is a versatile needle valve designed for precise flow regulation in hydraulic systems. This fully adjustable orifice allows for infinite adjustments from completely closed to the maximum orifice diameter, making it suitable for use as either a flow control or shutoff valve. Although not pressure-compensated, the valve effectively regulates flow based on the square root of the pressure differential across its ports. It features a balanced adjustment mechanism, ensuring easy operation even under high pressure conditions. The sharp-edged orifice design minimizes variations in flow due to changes in fluid viscosity, and its bidirectional flow path offers flexibility in installation with a preferred direction from port 1 to 2 for interchangeability with other controls. The valve ensures zero leakage when fully shut off. This model fits into the Cavity T-18A Series 4 and has a capacity of up to 140 gpm (530 L/min) and can withstand a maximum operating pressure of 5000 psi (350 bar). It requires an installation torque between 350 - 375 lbf ft (474 - 508 Nm) and features an adjustment range that spans 5.5 counterclockwise turns from fully closed to open. Additionally, it includes EPDM seals suitable for systems utilizing phosphate ester fluids, though these seals should not be exposed to petroleum-based substances as they may incur damage. The NFFDLIV model weighs approximately 3 pounds (1.35 kg) and has specific dimensions for hex sizes and locknut torques essential for proper installation and maintenance.
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-18A |
| Series | 4 |
| Capacity | 140 gpm (.85 inch)530 L/min. (21,6 mm) |
| Maximum Operating Pressure | 5000 psi350 bar |
| Adjustment - Number of Counterclockwise Turns - Fully Closed to Fully Open | 55 |
| Valve Hex Size | 1 5/8 in.41,3 mm |
| Valve Installation Torque | 350 - 375 lbf ft474 - 508 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 | 3.00 lb1,35 kg |
| Seal kit - Cartridge | Viton: 990-018-006 |
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