SUN HYDRAULICS
RSFCLDN
$107.50 USD
Tags:
- SUN HYDRAULICS
- Material:RSFCLDN
- Model:RSFC-LDN
- 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 RSFCLDN (RSFCLDN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at inlet port 1 exceeds the valve setting. This sequence valve is adept at controlling pressure at port 1 relative to the drain port 3 pressure, remaining unaffected by back pressure at port 2 up to the valve setting. It can replace 2-port relief valves in systems with pressure in the return line. Notably, all 3-port sequence cartridges are interchangeable, offering consistent flow paths and cavity sizes for a given frame size. The pilot flow increases as the inlet pressure at port 1 rises above the valve setting relative to drain port 3. The main stage orifice of this model is safeguarded by a durable 150-micron stainless steel screen. Pressure at port 3 adds directly to the valve setting at a 1:1 ratio, with a maximum limit of 5000 psi (350 bar). However, it is unsuitable for load-holding applications due to spool leakage. The RSFCLDN can be adjusted throughout its range using W or Y controls unless specified otherwise for a special maximum setting. Cartridges equipped with EPDM seals are intended for phosphate ester fluid systems and should avoid petroleum-based fluids. Incorporating Sun's floating style construction minimizes internal part binding risks from installation torque or machining variations. The RSFCLDN features a T-2A cavity series with a capacity of up to 30 gpm (120 L/min) and operates under pressures up to 5000 psi (350 bar). Its typical response time is approximately 10 ms, and it allows minimal leakage under specified conditions. The model requires specific installation torques and adjustment parameters for optimal performance, ensuring reliability in demanding hydraulic systems.
The Sun Hydraulics RSFCLDN (RSFCLDN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at inlet port 1 exceeds the valve setting. This sequence valve is adept at controlling pressure at port 1 relative to the drain port 3 pressure, remaining unaffected by back pressure at port 2 up to the valve setting. It can replace 2-port relief valves in systems with pressure in the return line. Notably, all 3-port sequence cartridges are interchangeable, offering consistent flow paths and cavity sizes for a given frame size. The pilot flow increases as the inlet pressure at port 1 rises above the valve setting relative to drain port 3. The main stage orifice of this model is safeguarded by a durable 150-micron stainless steel screen. Pressure at port 3 adds directly to the valve setting at a 1:1 ratio, with a maximum limit of 5000 psi (350 bar). However, it is unsuitable for load-holding applications due to spool leakage. The RSFCLDN can be adjusted throughout its range using W or Y controls unless specified otherwise for a special maximum setting. Cartridges equipped with EPDM seals are intended for phosphate ester fluid systems and should avoid petroleum-based fluids. Incorporating Sun's floating style construction minimizes internal part binding risks from installation torque or machining variations. The RSFCLDN features a T-2A cavity series with a capacity of up to 30 gpm (120 L/min) and operates under pressures up to 5000 psi (350 bar). Its typical response time is approximately 10 ms, and it allows minimal leakage under specified conditions. The model requires specific installation torques and adjustment parameters for optimal performance, ensuring reliability in demanding hydraulic systems.
Pilot-operated, balanced piston sequence valves will supply a secondary circuit with flow once the pressure at the inlet (port 1) has exceeded the valve setting. The pressure setting of a sequence valve controls the pressure at port 1 relative to the pressure at the drain (port 3). These valves are insensitive to back pressure at port 2 (sequence), up to the valve setting. They may be used to regulate pressure in place of 2-port relief valves if there is pressure in the return line.
- All 3 port sequence cartridges are physically and functionally interchangeable (i.e. same flow path, same cavity for a given frame size).
- Pilot flow continues to increase as the pressure at port 1 (inlet), relative to the pressure at port 3 (drain), rises above the valve setting.
- The main stage orifice is protected by a 150 micron stainless steel screen.
- Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
- Not suitable for use in load holding applications due to spool leakage.
- W and Y controls (where applicable) can be specified with or without a special setting. When no special setting is specified, the valve is adjustable throughout its full range using the W or Y control. When a special setting is specified, this setting represents the maximum setting of the valve.
- 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.
- 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-2A |
| Series | 2 |
| Capacity | 30 gpm120 L/min. |
| Factory Pressure Settings Established at | 4 gpm15 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Control Pilot Flow | 10 - 15 in³/min.0,16 - 0,25 L/min. |
| Response Time - Typical | 10 ms10 ms |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 3 in³/min.@1000 psi50 cc/min.@70 bar |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 1 1/8 in.28,6 mm |
| Valve Installation Torque | 45 - 50 lbf ft61 - 68 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 | .50 lb0,25 kg |
| Seal kit - Cartridge | Viton: 990-202-006 |
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Additional Resources
- Sequence Valves Technical Tips
- Sun Offers Zinc-Nickel Plating for Corrosion Resistance
- Sun Cartridges with EPDM Seals
- Sun Expands Corrosion-Resistant Solutions
- QuickDesign with SmartConnect Offers Drag-and-Drop Schematic Tool
- Series 4 PLUS Cartridges Offer Higher Flows with Lower Pressure Losses
- Manufacturing Sun Cartridge Cavities
- Sequence Valves
- Sun's Floating Style Screw-In Cartridge
- Units of Measure, Settings, and Conversions
- Sun Model Code Explanation; 999-901-334
- Cavity Information (S-171) and Tooling
- Cartridges: Materials of Construction
- Fluid and Temperature Recommendations
- Performance Data
Notes:
- For Series 1 cartridges configured with an O control (panel mount handknob), a .75 in. (19 mm) diameter hole is required in the panel.