SUN HYDRAULICS
RDFA3DN
$91.60 USD
Tags:
- SUN HYDRAULICS
- Material:RDFA3DN
- Model:RDFA-3DN
- 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 RDFA3DN (Material Number: RDFA3DN) is a nonadjustable direct-acting relief cartridge designed to protect hydraulic components from pressure transients. This normally closed, pressure-limiting valve opens to the tank port when the inlet pressure reaches the valve setting, effectively throttling flow to manage pressure rise. It is characterized by smooth and quiet operation with essentially zero leakage, and it is dirt tolerant and immune to silting. The valve's design ensures rapid response, making it suitable for load holding applications and cross-port relief circuits. It features EPDM seals for compatibility with phosphate ester fluids, although contact with petroleum-based fluids should be avoided to prevent seal damage. The valve can handle maximum pressure at port 2, which adds directly to the setting at a 1:1 ratio. For optimal performance and repeatability, it's recommended to select a spring range where the desired relief setting falls in the mid-to-high range of its capacity. The RDFA3DN incorporates Sun\u2019s floating style construction, minimizing internal binding risks due to installation torque or machining variations. It fits into a T-3A cavity, offers a flow capacity of 50 gpm (200 L/min), and operates under a maximum pressure of 5000 psi (350 bar). With a typical response time of 2 milliseconds and minimal leakage at reseat (10 drops/min or 0.7 cc/min), this valve is robust in performance. Installation requires a torque between 45-50 lbf ft (61-68 Nm), and it weighs approximately 0.50 lb (0.25 kg). This model is factory set for tamper-proof operation, ensuring reliable protection for hydraulic systems without user adjustments post-installation.
The Sun Hydraulics RDFA3DN (Material Number: RDFA3DN) is a nonadjustable direct-acting relief cartridge designed to protect hydraulic components from pressure transients. This normally closed, pressure-limiting valve opens to the tank port when the inlet pressure reaches the valve setting, effectively throttling flow to manage pressure rise. It is characterized by smooth and quiet operation with essentially zero leakage, and it is dirt tolerant and immune to silting. The valve's design ensures rapid response, making it suitable for load holding applications and cross-port relief circuits. It features EPDM seals for compatibility with phosphate ester fluids, although contact with petroleum-based fluids should be avoided to prevent seal damage. The valve can handle maximum pressure at port 2, which adds directly to the setting at a 1:1 ratio. For optimal performance and repeatability, it's recommended to select a spring range where the desired relief setting falls in the mid-to-high range of its capacity. The RDFA3DN incorporates Sun\u2019s floating style construction, minimizing internal binding risks due to installation torque or machining variations. It fits into a T-3A cavity, offers a flow capacity of 50 gpm (200 L/min), and operates under a maximum pressure of 5000 psi (350 bar). With a typical response time of 2 milliseconds and minimal leakage at reseat (10 drops/min or 0.7 cc/min), this valve is robust in performance. Installation requires a torque between 45-50 lbf ft (61-68 Nm), and it weighs approximately 0.50 lb (0.25 kg). This model is factory set for tamper-proof operation, ensuring reliable protection for hydraulic systems without user adjustments post-installation.
Non-adjustable direct-acting relief cartridges are normally closed, pressure-limiting valves used to protect hydraulic components from pressure transients. When the pressure at the inlet (port 1) reaches the valve setting, the valve starts to open to tank (port 2), throttling flow to limit the pressure rise. These valves are smooth and quiet, essentially zero leak, dirt tolerant, immune to silting and are very fast.
- Customer must specfy setting. The valve will be factory set and is tamper proof.
- 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.
- Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
- Valve is relatively insensitive to varying oil temperatures and oil borne contamination.
- Select a spring range where the desired relief setting is approximately mid-range to high between the minimum and maximum pressure to ensure maximum valve repeatability.
- Suitable for use in load holding applications.
- Back pressure on the tank port (port 2) is directly additive to the valve setting at a 1:1 ratio.
- All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).
- Incorporates the Sun floating style construction to minimize the possibility of internal parts binding due to excessive installation torque and/or cavity/cartridge machining variations.
| Cavity | T-3A |
| Series | 2 |
| Capacity | 50 gpm200 L/min. |
| Factory Pressure Settings Established at | 4 gpm15 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 2 ms2 ms |
| Maximum Valve Leakage at Reseat | 10 drops/min.0,7 cc/min. |
| Reseat | >90% of setting>90% of setting |
| Valve Hex Size | 1 1/8 in.28,6 mm |
| Valve Installation Torque | 45 - 50 lbf ft61 - 68 Nm |
| Model Weight | .50 lb0,25 kg |
| Seal kit - Cartridge | Viton: 990-303-006 |
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