SUN HYDRAULICS
RSFCLDV
$114.67 USD
- SUN HYDRAULICS
- Material:RSFCLDV
- Model:RSFC-LDV
- 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 RSFCLDV (RSFCLDV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at the inlet port 1 exceeds the valve setting. This valve effectively controls the pressure at port 1 relative to the pressure at drain port 3, remaining insensitive to back pressure at port 2 up to the valve setting. It can be used as an alternative to 2-port relief valves in systems where there is pressure in the return line. The RSFCLDV model features interchangeable three-port sequence cartridges that share the same flow path and cavity for a given frame size, enhancing its versatility. The pilot flow of this valve increases as pressure rises above the set threshold at port 1 relative to port 3, with a main stage orifice protected by a durable 150-micron stainless steel screen. This sequence valve has several noteworthy specifications: it has a maximum operating pressure of 5000 psi (350 bar), with control pilot flow ranging from 10 to 15 in\u00b3/min (0.16 to 0.25 L/min), and typical response time of approximately 10 ms. It is not suitable for load holding applications due to potential spool leakage and requires careful selection of seals, such as EPDM for systems using phosphate ester fluids, as exposure to petroleum-based fluids can cause seal damage. The Sun floating style construction minimizes internal parts binding due to excessive installation torque or machining variations. The RSFCLDV model has an adjustable range using W or Y controls, with special settings available upon request, and features easy installation requirements including specific torque values for both the valve and locknut components.
The Sun Hydraulics RSFCLDV (RSFCLDV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at the inlet port 1 exceeds the valve setting. This valve effectively controls the pressure at port 1 relative to the pressure at drain port 3, remaining insensitive to back pressure at port 2 up to the valve setting. It can be used as an alternative to 2-port relief valves in systems where there is pressure in the return line. The RSFCLDV model features interchangeable three-port sequence cartridges that share the same flow path and cavity for a given frame size, enhancing its versatility. The pilot flow of this valve increases as pressure rises above the set threshold at port 1 relative to port 3, with a main stage orifice protected by a durable 150-micron stainless steel screen. This sequence valve has several noteworthy specifications: it has a maximum operating pressure of 5000 psi (350 bar), with control pilot flow ranging from 10 to 15 in\u00b3/min (0.16 to 0.25 L/min), and typical response time of approximately 10 ms. It is not suitable for load holding applications due to potential spool leakage and requires careful selection of seals, such as EPDM for systems using phosphate ester fluids, as exposure to petroleum-based fluids can cause seal damage. The Sun floating style construction minimizes internal parts binding due to excessive installation torque or machining variations. The RSFCLDV model has an adjustable range using W or Y controls, with special settings available upon request, and features easy installation requirements including specific torque values for both the valve and locknut components.
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.