SUN HYDRAULICS
FDFAYAN
$536.91 USD
- SUN HYDRAULICS
- Material:FDFAYAN
- Model:FDFA-YAN
- 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 FDFAYAN (FDFAYAN) is a fully adjustable, pressure-compensated flow control valve with a reverse-flow check feature, designed for precise flow regulation in meter-in or meter-out applications facing wide pressure fluctuations. This model is part of the Series 4 and fits into cavity T-18A, offering a high capacity of up to 50 gpm (200 L/min) and can withstand a maximum operating pressure of 5000 psi (350 bar). The valve allows for infinite adjustments from nearly closed to maximum flow, facilitated by a balanced adjustment mechanism that remains easy to operate even under high pressures. The sharp-edged orifice design ensures minimal flow variation due to viscosity changes, while an integral high-capacity check valve allows unrestricted flow from port 2 to port 1. The FDFAYAN model features an adjustment range that spans 5.5 counterclockwise turns from fully closed to fully open. It has a valve hex size of 1-5/8 inches (41.3 mm) and requires an installation torque between 350 and 375 lbf ft (475 to 508 Nm). The adjustment screw has an internal hex size of 5/32 inches (4 mm), while the locknut requires a torque between 80 and 90 lbf in (9 to 10 Nm). This cartridge weighs approximately 3.30 lbs (1.50 kg) and is compatible with systems using phosphate ester fluids when equipped with EPDM seals; exposure to petroleum-based fluids will damage these seals. The FDFAYAN's design minimizes leakage, with minimum leakage recorded at .2 gpm (0.8 L/min) when shut off. It is suitable for applications requiring consistent performance despite varying conditions, although it should be noted that priority flow control valves like this one are not inherently efficient devices and may generate heat if not sized correctly within the hydraulic system's circuit design constraints.
The Sun Hydraulics FDFAYAN (FDFAYAN) is a fully adjustable, pressure-compensated flow control valve with a reverse-flow check feature, designed for precise flow regulation in meter-in or meter-out applications facing wide pressure fluctuations. This model is part of the Series 4 and fits into cavity T-18A, offering a high capacity of up to 50 gpm (200 L/min) and can withstand a maximum operating pressure of 5000 psi (350 bar). The valve allows for infinite adjustments from nearly closed to maximum flow, facilitated by a balanced adjustment mechanism that remains easy to operate even under high pressures. The sharp-edged orifice design ensures minimal flow variation due to viscosity changes, while an integral high-capacity check valve allows unrestricted flow from port 2 to port 1. The FDFAYAN model features an adjustment range that spans 5.5 counterclockwise turns from fully closed to fully open. It has a valve hex size of 1-5/8 inches (41.3 mm) and requires an installation torque between 350 and 375 lbf ft (475 to 508 Nm). The adjustment screw has an internal hex size of 5/32 inches (4 mm), while the locknut requires a torque between 80 and 90 lbf in (9 to 10 Nm). This cartridge weighs approximately 3.30 lbs (1.50 kg) and is compatible with systems using phosphate ester fluids when equipped with EPDM seals; exposure to petroleum-based fluids will damage these seals. The FDFAYAN's design minimizes leakage, with minimum leakage recorded at .2 gpm (0.8 L/min) when shut off. It is suitable for applications requiring consistent performance despite varying conditions, although it should be noted that priority flow control valves like this one are not inherently efficient devices and may generate heat if not sized correctly within the hydraulic system's circuit design constraints.
Fully adjustable, pressure-compensated flow controls with reverse-flow check provide precise flow regulation for meter-in or meter-out applications where there may be wide pressure fluctuations. They are infinitely adjustable from nearly closed up to the maximum flow. An integral high-capacity check valve provides unrestricted flow from port 2 to port 1.
- 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.
- A balanced adjustment mechanism allows for easy adjustment even at high pressures.
- The sharp-edged orifice design minimizes flow variations due to viscosity changes.
- Minimum leakage is .2 gpm (0,8 L/min) when the adjustment mechanism is turned to the shut-off position.
- Cartridges 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 | 50 gpm200 L/min. |
| 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 ft475 - 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 | 3.30 lb1,50 kg |
| Seal kit - Cartridge | Viton: 990-018-006 |
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