SUN HYDRAULICS
RSFCKDV
$128.57 USD
- SUN HYDRAULICS
- Material:RSFCKDV
- Model:RSFC-KDV
- 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 RSFCKDV (RSFCKDV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the inlet port pressure surpasses the valve setting. The valve's pressure setting controls the pressure at port 1 relative to the drain port 3 and remains unaffected by back pressure at port 2 up to the valve setting. These valves can substitute for 2-port relief valves when there is return line pressure. Notably, all 3-port sequence cartridges are interchangeable in terms of flow path and cavity for a given frame size. As inlet pressure at port 1 rises above the valve setting relative to drain port 3, pilot flow increases. The main stage orifice is safeguarded by a 150-micron stainless steel screen, and the pressure at port 3 adds directly to the valve setting at a 1:1 ratio, not exceeding 5000 psi (350 bar). However, this valve is unsuitable for load-holding applications due to spool leakage. The RSFCKDV features adjustable W and Y controls, which can be specified with or without a special setting; without it, adjustments span the full range. Cartridges with EPDM seals are compatible with phosphate ester fluids but are vulnerable to petroleum-based substances. The design incorporates Sun's floating style construction, reducing internal binding risk due to excessive torque or machining variations. Key specifications include a T-2A cavity series with a capacity of 30 gpm (120 L/min), maximum operating pressure of 5000 psi (350 bar), control pilot flow of 10-15 in\u00b3/min (0.16-0.25 L/min), and typical response time of approximately 10 ms. Maximum leakage stands at 3 in\u00b3/min (50 cc/min) at specific conditions, with adjustment facilitated by an internal hex screw and locknut requiring specific torque settings.
The Sun Hydraulics RSFCKDV (RSFCKDV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the inlet port pressure surpasses the valve setting. The valve's pressure setting controls the pressure at port 1 relative to the drain port 3 and remains unaffected by back pressure at port 2 up to the valve setting. These valves can substitute for 2-port relief valves when there is return line pressure. Notably, all 3-port sequence cartridges are interchangeable in terms of flow path and cavity for a given frame size. As inlet pressure at port 1 rises above the valve setting relative to drain port 3, pilot flow increases. The main stage orifice is safeguarded by a 150-micron stainless steel screen, and the pressure at port 3 adds directly to the valve setting at a 1:1 ratio, not exceeding 5000 psi (350 bar). However, this valve is unsuitable for load-holding applications due to spool leakage. The RSFCKDV features adjustable W and Y controls, which can be specified with or without a special setting; without it, adjustments span the full range. Cartridges with EPDM seals are compatible with phosphate ester fluids but are vulnerable to petroleum-based substances. The design incorporates Sun's floating style construction, reducing internal binding risk due to excessive torque or machining variations. Key specifications include a T-2A cavity series with a capacity of 30 gpm (120 L/min), maximum operating pressure of 5000 psi (350 bar), control pilot flow of 10-15 in\u00b3/min (0.16-0.25 L/min), and typical response time of approximately 10 ms. Maximum leakage stands at 3 in\u00b3/min (50 cc/min) at specific conditions, with adjustment facilitated by an internal hex screw and locknut requiring specific torque settings.
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 |
Show FAQ
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.