SUN HYDRAULICS
RDHALSN
$176.90 USD
Tags:
- SUN HYDRAULICS
- Material:RDHALSN
- Model:RDHA-LSN
- 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 RDHALSN (Material Number: RDHALSN) is a direct-acting relief cartridge valve designed to protect hydraulic components from pressure transients. This normally closed, pressure-limiting valve opens to tank port 2 when the inlet port 1 reaches the set pressure, effectively throttling flow to limit any rise in pressure. Known for its smooth, quiet operation and essentially zero leakage, this valve is dirt tolerant, immune to silting, and offers rapid response times. It features a floating style construction to minimize internal binding risks due to excessive installation torque or machining variations. Physically and functionally interchangeable with other 2-port relief cartridges (excluding pilot reliefs), this model maintains a consistent flow path and cavity size for a given frame. It is capable of handling maximum pressure at port 2, making it suitable for cross-port relief circuits and load-holding applications. The valve's adjust screw seals are exposed to system pressure, necessitating pressure removal before adjustments can be made. Optimal performance is achieved by selecting a spring range where the desired setting falls between midrange and high pressures. The RDHALSN model accommodates up to 100 gpm (380 L/min) capacity with a maximum operating pressure of 5000 psi (350 bar). Typical response time is around 2 ms, with maximum leakage at reseat limited to 10 drops/min (0.7 cc/min). The valve reseats at approximately 90% of its set value. Installation requires specific torque settings: valve installation torque ranges from 150-160 lbf ft (203-217 Nm), while locknut torque ranges from 80-90 lbf in (9-10 Nm). This model weighs approximately 1.30 lb (0.60 kg) and utilizes a Viton seal kit identified as part number 990316006.
The Sun Hydraulics RDHALSN (Material Number: RDHALSN) is a direct-acting relief cartridge valve designed to protect hydraulic components from pressure transients. This normally closed, pressure-limiting valve opens to tank port 2 when the inlet port 1 reaches the set pressure, effectively throttling flow to limit any rise in pressure. Known for its smooth, quiet operation and essentially zero leakage, this valve is dirt tolerant, immune to silting, and offers rapid response times. It features a floating style construction to minimize internal binding risks due to excessive installation torque or machining variations. Physically and functionally interchangeable with other 2-port relief cartridges (excluding pilot reliefs), this model maintains a consistent flow path and cavity size for a given frame. It is capable of handling maximum pressure at port 2, making it suitable for cross-port relief circuits and load-holding applications. The valve's adjust screw seals are exposed to system pressure, necessitating pressure removal before adjustments can be made. Optimal performance is achieved by selecting a spring range where the desired setting falls between midrange and high pressures. The RDHALSN model accommodates up to 100 gpm (380 L/min) capacity with a maximum operating pressure of 5000 psi (350 bar). Typical response time is around 2 ms, with maximum leakage at reseat limited to 10 drops/min (0.7 cc/min). The valve reseats at approximately 90% of its set value. Installation requires specific torque settings: valve installation torque ranges from 150-160 lbf ft (203-217 Nm), while locknut torque ranges from 80-90 lbf in (9-10 Nm). This model weighs approximately 1.30 lb (0.60 kg) and utilizes a Viton seal kit identified as part number 990316006.
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.
- All 2-port relief cartridges (except pilot reliefs) are physically and functionally interchangeable (same flow path, same cavity for a given frame size).
- Will accept maximum pressure at port 2; suitable for use in cross port relief circuits.
- The seals on the adjust screw are exposed to system pressure which means this valve can only be adjusted when the pressure is removed. The setting procedure is; check the setting, remove the pressure, adjust the valve, check the new setting.
- 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.
- 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-16A |
| Series | 3 |
| Capacity | 100 gpm380 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 |
| Adjustment - Number of Clockwise Turns to Increase Setting | 66 |
| 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 | Viton: 990-316-006 |
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Notes:
- U.S. Patent #4,742,846; European Patent Pending