SUN HYDRAULICS
SEQUENCE VALVE
SCCALBN
$87.07 USD
- SUN HYDRAULICS
- Material:SCCALBN
- Model:SCCA-LBN
- 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 SCCALBN (SCCALBN) is a direct-acting sequence valve with a reverse flow check, designed to manage secondary circuit flow once the inlet port pressure exceeds the valve setting. This model incorporates an integral check valve allowing reverse flow from port 2 to port 1. It is crucial that port 3, serving as a drain, remains unblocked to ensure proper functionality, as blocking it can lead to malfunction due to seal weepage. The pressure at port 3 directly adds to the valve setting at a 1:1 ratio, and should not exceed 5000 psi (350 bar). This valve is suitable for load holding applications and maintains physical and functional interchangeability across all 3-port sequence cartridges of the same frame size. Cartridges with EPDM seals are specific for systems using phosphate ester fluids and are not compatible with petroleum-based substances. The corrosion-resistant variants are marked by suffixes AP or LH for stainless steel or zinc-nickel plated components, respectively. The SCCALBN features Sun's floating style construction which helps prevent internal part binding due to excessive installation torque or machining variations. This cartridge has a capacity of 15 gpm (60 L/min) and operates under a maximum pressure of 5000 psi (350 bar), with typical response times around 2 ms. The valve leakage at reseat is minimal at approximately 10 drops per minute (0.7 cc/min), while the check cracking pressure stands at 40 psi (2.8 bar). Adjustments can be made through five clockwise turns, with specifications on torque requirements for installation and adjustments provided. The model weighs approximately .30 lb (0.15 kg) and comes with an available Viton seal kit under part number 990011006.
The Sun Hydraulics SCCALBN (SCCALBN) is a direct-acting sequence valve with a reverse flow check, designed to manage secondary circuit flow once the inlet port pressure exceeds the valve setting. This model incorporates an integral check valve allowing reverse flow from port 2 to port 1. It is crucial that port 3, serving as a drain, remains unblocked to ensure proper functionality, as blocking it can lead to malfunction due to seal weepage. The pressure at port 3 directly adds to the valve setting at a 1:1 ratio, and should not exceed 5000 psi (350 bar). This valve is suitable for load holding applications and maintains physical and functional interchangeability across all 3-port sequence cartridges of the same frame size. Cartridges with EPDM seals are specific for systems using phosphate ester fluids and are not compatible with petroleum-based substances. The corrosion-resistant variants are marked by suffixes AP or LH for stainless steel or zinc-nickel plated components, respectively. The SCCALBN features Sun's floating style construction which helps prevent internal part binding due to excessive installation torque or machining variations. This cartridge has a capacity of 15 gpm (60 L/min) and operates under a maximum pressure of 5000 psi (350 bar), with typical response times around 2 ms. The valve leakage at reseat is minimal at approximately 10 drops per minute (0.7 cc/min), while the check cracking pressure stands at 40 psi (2.8 bar). Adjustments can be made through five clockwise turns, with specifications on torque requirements for installation and adjustments provided. The model weighs approximately .30 lb (0.15 kg) and comes with an available Viton seal kit under part number 990011006.
Direct-acting sequence valves with reverse-flow check will supply a secondary circuit with flow once the pressure at the inlet (port 1) has exceeded the valve setting. Additionally, these valves incorporate an integral check valve to provide reverse flow from port 2 (sequence) to port 1 (inlet). The pressure setting of a sequence valve controls the pressure at port 1 relative to the pressure at the drain (port 3).
- Although this is a zero pilot flow valve, port 3 (drain) must be connected to maintain a pressure reference in the control chamber. If port 3 is blocked, reciprocating seal weepage will cause the valve to malfunction.
- Pressure at port 3 is directly additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar).
- Suitable for use in load holding applications.
- All 3 port sequence cartridges are physically and functionally interchangeable (i.e. same flow path, same cavity for a given frame size).
- 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.
- Corrosion resistant cartridge valves are intended for use in corrosive environments and are identified by the model code suffix /AP for external stainless steel components, or /LH for external zinc-nickel plated components. See the CONFIGURATION section for all options. For further details, please see the Materials of Construction page located under TECH RESOURCES.
- 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-11A |
| Series | 1 |
| Capacity | 15 gpm60 L/min. |
| Factory Pressure Settings Established at | 2 in³/min.30 cc/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. |
| Check Cracking Pressure | 40 psi2,8 bar |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 7/8 in.22,2 mm |
| Valve Installation Torque | 30 - 35 lbf ft41 - 47 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: 990-011-006 |
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