SUN HYDRAULICS
SEQUENCE
RSBCKQN
$86.20
- SUN HYDRAULICS
- Material:RSBCKQN
- Model:RSBC-KQN
- Summary:Cartridge
Quantity in stock: 14
***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 RSBCKQN (RSBCKQN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the inlet port 1 pressure exceeds the valve setting. This valve controls the pressure at port 1 relative to the drain port 3, remaining unaffected by back pressure at port 2 sequence up to the set limit. It can replace two-port relief valves for pressure regulation when there's return line pressure. The RSBCKQN model is interchangeable with all three-port sequence cartridges of similar frame sizes, maintaining identical flow paths and cavities. As inlet pressure at port 1 rises above the valve setting relative to drain port 3, pilot flow increases accordingly. The main stage orifice features a protective 150-micron stainless steel screen. This model has a minimum setting of 75 psi (5 bar) across all spring ranges and can handle pressures up to 5000 psi (350 bar). Pressure at port 3 adds directly to the valve setting at a 1:1 ratio but should not exceed the maximum limit of 5000 psi (350 bar). It's not recommended for load-holding applications due to spool leakage. Cartridges equipped with EPDM seals are suitable for systems using phosphate ester fluids; petroleum-based fluids may damage these seals. The Sun floating style construction minimizes internal part binding due to excessive installation torque or machining variations. Additional specifications include a cavity type T-163A, series number zero, capacity of 7.5 gpm (30 L/min), factory pressure settings established at 4 gpm (15 L/min), and typical response time of approximately 10 ms. Maximum valve leakage is rated at two in\u00b3/min (30 cc/min) under specific conditions, and various adjustment parameters are provided for precise operation control. The model weighs .30 lb (.15 kg), and Viton seal kits are available for this cartridge design.
The Sun Hydraulics RSBCKQN (RSBCKQN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the inlet port 1 pressure exceeds the valve setting. This valve controls the pressure at port 1 relative to the drain port 3, remaining unaffected by back pressure at port 2 sequence up to the set limit. It can replace two-port relief valves for pressure regulation when there's return line pressure. The RSBCKQN model is interchangeable with all three-port sequence cartridges of similar frame sizes, maintaining identical flow paths and cavities. As inlet pressure at port 1 rises above the valve setting relative to drain port 3, pilot flow increases accordingly. The main stage orifice features a protective 150-micron stainless steel screen. This model has a minimum setting of 75 psi (5 bar) across all spring ranges and can handle pressures up to 5000 psi (350 bar). Pressure at port 3 adds directly to the valve setting at a 1:1 ratio but should not exceed the maximum limit of 5000 psi (350 bar). It's not recommended for load-holding applications due to spool leakage. Cartridges equipped with EPDM seals are suitable for systems using phosphate ester fluids; petroleum-based fluids may damage these seals. The Sun floating style construction minimizes internal part binding due to excessive installation torque or machining variations. Additional specifications include a cavity type T-163A, series number zero, capacity of 7.5 gpm (30 L/min), factory pressure settings established at 4 gpm (15 L/min), and typical response time of approximately 10 ms. Maximum valve leakage is rated at two in\u00b3/min (30 cc/min) under specific conditions, and various adjustment parameters are provided for precise operation control. The model weighs .30 lb (.15 kg), and Viton seal kits are available for this cartridge design.
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.
- Minimum setting is 75 psi (5 bar) for all spring ranges.
- 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.
- 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-163A |
| Series | 0 |
| Capacity | 7.5 gpm30 L/min. |
| Factory Pressure Settings Established at | 4 gpm15 L/min. |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 10 ms10 ms |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 2 in³/min.30 cc/min. |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 3/4 in.19,1 mm |
| Valve Installation Torque | 20 - 25 lbf ft27 - 33 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 | .30 lb0,15 kg |
| Seal kit - Cartridge | Viton: 990-163-006 |
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Additional Resources
- 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
- Sequence Valves Technical Tips
- Manufacturing Sun Cartridge Cavities
- Sequence Valves
- Sun Model Code Explanation; 999-901-334
- Cavity Information (S-171) and Tooling
- Cartridges: Materials of Construction
- Fluid and Temperature Recommendations
- Performance Data
- Sun's Floating Style Screw-In Cartridge
- Units of Measure, Settings, and Conversions
