SUN HYDRAULICS
SQHBLEN
$279.07 USD
- SUN HYDRAULICS
- Material:SQHBLEN
- Model:SQHB-LEN
- 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 SQHBLEN (SQHBLEN) is a high-performance kickdown sequence valve designed to optimize flow management in hydraulic systems. This valve is engineered to kick completely open and maintain an unrestricted flow path from port 1 to port 2 once the inlet pressure at port 1 surpasses the preset valve threshold, with the pressure setting being relative to drain port 3. The valve remains open as long as the inlet pressure exceeds the outlet pressure, and it resets when the inlet pressure falls below its setting, with no flow between ports and equal or greater outlet pressure compared to inlet pressure. This model is part of Sun Hydraulics' interchangeable 3-port sequence cartridges, ensuring compatibility within a given frame size. Notably, this valve should not be employed in load-holding applications due to its design. It features a main stage orifice shielded by a 150-micron stainless steel screen for added durability. The maximum allowable pressure at port 3 is directly additive to the valve setting at a ratio of 1:1, capped at 5000 psi (350 bar). The SQHBLEN is ideally used on the actuator side of hydraulic systems since flow cessation through the valve is necessary for resetting; if used on the pump side, pump flow must be halted for reset functionality. The construction incorporates Sun's floating style design to reduce risks of internal binding from excessive torque or machining inconsistencies. It boasts a capacity of 60 gpm (240 L/min) with factory settings established at kickdown points. With an impressive response time of approximately 25 ms and minimal leakage rates, this sequence valve offers reliable performance under demanding conditions. Installation specifics include a hex size of 1\u00bc inches and an installation torque range between 150-160 lbf ft (203-217 Nm).
The Sun Hydraulics SQHBLEN (SQHBLEN) is a high-performance kickdown sequence valve designed to optimize flow management in hydraulic systems. This valve is engineered to kick completely open and maintain an unrestricted flow path from port 1 to port 2 once the inlet pressure at port 1 surpasses the preset valve threshold, with the pressure setting being relative to drain port 3. The valve remains open as long as the inlet pressure exceeds the outlet pressure, and it resets when the inlet pressure falls below its setting, with no flow between ports and equal or greater outlet pressure compared to inlet pressure. This model is part of Sun Hydraulics' interchangeable 3-port sequence cartridges, ensuring compatibility within a given frame size. Notably, this valve should not be employed in load-holding applications due to its design. It features a main stage orifice shielded by a 150-micron stainless steel screen for added durability. The maximum allowable pressure at port 3 is directly additive to the valve setting at a ratio of 1:1, capped at 5000 psi (350 bar). The SQHBLEN is ideally used on the actuator side of hydraulic systems since flow cessation through the valve is necessary for resetting; if used on the pump side, pump flow must be halted for reset functionality. The construction incorporates Sun's floating style design to reduce risks of internal binding from excessive torque or machining inconsistencies. It boasts a capacity of 60 gpm (240 L/min) with factory settings established at kickdown points. With an impressive response time of approximately 25 ms and minimal leakage rates, this sequence valve offers reliable performance under demanding conditions. Installation specifics include a hex size of 1\u00bc inches and an installation torque range between 150-160 lbf ft (203-217 Nm).
Kick-down sequence valves will kick completely open and remain open once the pressure at the inlet (port 1) exceeds the valve setting, creating an unrestricted flow path from port 1 to port 2 (sequence). The pressure setting at port 1 is relative to the drain (port 3). The valve remains open as long as the pressure at port 1 exceeds the pressure at port 2. To reset the valve, pressure at port 1 must fall below the setting of the valve, flow from port 1 to port 2 must cease, and pressure at port 2 must be equal to or greater than the pressure at port 1.
- All 3 port sequence cartridges are physically and functionally interchangeable (i.e. same flow path, same cavity for a given frame size).
- Should not be used in load holding applications.
- 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).
- Intended for use on the actuator side of the system as flow through the valve must cease for the valve to reset. If used on the pump side of a system, pump flow must be shut off for the valve to reset.
- 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-17A |
| Series | 3 |
| Capacity | 60 gpm240 L/min. |
| Factory Pressure Settings Established at | Kick down pointKick down point |
| Maximum Operating Pressure | 5000 psi350 bar |
| Response Time - Typical | 25 ms25 ms |
| Maximum Valve Leakage at 110 SUS (24 cSt) | 4 in³/min.65 cc/min. |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 1 1/4 in.31,8 mm |
| Valve Installation Torque | 150 - 160 lbf ft203 - 217 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 | 1.50 lb0,70 kg |
| Seal kit - Cartridge | Viton: 990-017-006 |
Show FAQ
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