SUN HYDRAULICS
RDFA3CV
$101.37 USD
- SUN HYDRAULICS
- Material:RDFA3CV
- Model:RDFA-3CV
- 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 RDFA3CV (RDFA3CV) is a non-adjustable direct-acting relief cartridge designed to protect hydraulic components from pressure transients. This valve is normally closed and activates when the inlet port pressure reaches the preset threshold, redirecting flow to the tank port to limit pressure rise. The RDFA3CV is characterized by its smooth, quiet operation and essentially zero leakage, making it ideal for systems where dirt tolerance and resistance to silting are critical. Customers must specify their desired pressure setting at purchase, as the valve is factory-set and tamper-proof. It features EPDM seals suitable for systems using phosphate ester fluids, while exposure to petroleum-based fluids can damage these seals. The valve can handle maximum pressure at port 2 and is suitable for cross-port relief circuits and load-holding applications. The RDFA3CV's performance remains stable across varying oil temperatures and contamination levels, offering high repeatability when the relief setting is near the upper range of its spring capacity. It incorporates Sun's floating style construction to minimize internal binding due to installation torque or machining variations. With a cavity type of T-3A Series 2, it supports a capacity of up to 50 gpm (200 L/min) and a maximum operating pressure of 5000 psi (350 bar). The typical response time is around 2 milliseconds with a maximum valve leakage at reseat of 10 drops per minute (0.7 cc/min). The valve reseats at approximately 90% of its setting, ensuring reliable performance in demanding applications. Its compact design includes a hex size of 1-1/8 inches (28.6 mm) and an installation torque requirement between 45-50 lbf ft (61-68 Nm), with a model weight of .50 lb (0.25 kg).
The Sun Hydraulics RDFA3CV (RDFA3CV) is a non-adjustable direct-acting relief cartridge designed to protect hydraulic components from pressure transients. This valve is normally closed and activates when the inlet port pressure reaches the preset threshold, redirecting flow to the tank port to limit pressure rise. The RDFA3CV is characterized by its smooth, quiet operation and essentially zero leakage, making it ideal for systems where dirt tolerance and resistance to silting are critical. Customers must specify their desired pressure setting at purchase, as the valve is factory-set and tamper-proof. It features EPDM seals suitable for systems using phosphate ester fluids, while exposure to petroleum-based fluids can damage these seals. The valve can handle maximum pressure at port 2 and is suitable for cross-port relief circuits and load-holding applications. The RDFA3CV's performance remains stable across varying oil temperatures and contamination levels, offering high repeatability when the relief setting is near the upper range of its spring capacity. It incorporates Sun's floating style construction to minimize internal binding due to installation torque or machining variations. With a cavity type of T-3A Series 2, it supports a capacity of up to 50 gpm (200 L/min) and a maximum operating pressure of 5000 psi (350 bar). The typical response time is around 2 milliseconds with a maximum valve leakage at reseat of 10 drops per minute (0.7 cc/min). The valve reseats at approximately 90% of its setting, ensuring reliable performance in demanding applications. Its compact design includes a hex size of 1-1/8 inches (28.6 mm) and an installation torque requirement between 45-50 lbf ft (61-68 Nm), with a model weight of .50 lb (0.25 kg).
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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