Fully adjustable needle valve
Capacity: 90 gpm (.69 inch)340 L/min. (17,5 mm) |
Cavity: T-16A
![NFED : Fully adjustable needle valve](https://cmsimages.sunhydraulics.com/cartg_nfed.gif)
Technical Features [ + ]
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.
Technical Data [ + ]
Note: Data may vary by configuration. See CONFIGURATION section.
Cavity | T-16A |
Series | 3 |
Capacity | 90 gpm (.69 inch)340 L/min. (17,5 mm) |
Maximum Operating Pressure | 5000 psi350 bar |
Adjustment - No. of CCW Turns from Fully Closed to Fully Open | 55 |
Valve Hex Size | 1 1/4 in.31,8 mm |
Valve Installation Torque | 150 - 160 lbf ft203 - 217 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 | 1.30 lb0,60 kg |
Seal kit - Cartridge | Buna: 990016007 |
Seal kit - Cartridge | EPDM: 990016014 |
Seal kit - Cartridge | Polyurethane: 990016002 |
Seal kit - Cartridge | Viton: 990016006 |
Performance Curves [ + ]
FAQs [ + ]
There are exactly 250 Sun drops in a cubic inch or 15 in a cc.
Only external seals are serviceable. Sun offers replacement seal kits for all cartridge models. The applicable kit part number can be found in the product page's Technical Data table or by using our Cartridge Seal Kit search function located under Accessories. Please note: Converting the external seals from one material to another does not ensure fluid compatibility with that material due to the existence of internal seals within the cartridge.
Additional Resources [ + ]
Highlights
- QuickDesign with SmartConnect Offers Drag-and-Drop Schematic Tool
- Sun's New FLeX Series Solenoid Valves & Coils
- Sun Expands Corrosion-Resistant Solutions
- Sun Offers Zinc-Nickel Plating for Corrosion Resistance
- Sun Cartridges with EPDM Seals
Technical Tips
- Manufacturing Sun Cartridge Cavities (522.27 KB)
- Check, Flow Control, and Priority Flow Control Valves (537.44 KB)
Technical Information