SUN HYDRAULICS
SQDBKQV
$116.95 USD
- SUN HYDRAULICS
- Material:SQDBKQV
- Model:SQDB-KQV
- 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 SQDBKQV (SQDBKQV) is a kickdown sequence valve designed to provide an unrestricted flow path from port 1 to port 2 once the inlet pressure exceeds the valve setting. This valve is suitable for applications where maintaining open flow is crucial, as it remains open as long as the pressure at port 1 surpasses that at port 2. To reset, the pressure at port 1 must drop below the valve setting, and flow from port 1 to port 2 must stop. It features a corrosion-resistant construction with options for external stainless steel or zinc-nickel plating, making it ideal for use in corrosive environments. The valve is not recommended for load-holding applications due to its design and functionality. The SQDBKQV incorporates Sun's floating style construction to minimize internal binding risks and ensure reliable performance despite installation torque variations or machining differences. It operates within a maximum pressure of 5000 psi (350 bar) and offers a typical response time of 25 ms. The main stage orifice is protected by a stainless steel screen, adding durability and reliability in various settings. The sequence cartridges are interchangeable across all three ports, maintaining consistency in flow path and cavity dimensions for a given frame size. This model supports a capacity of up to 15 gpm (60 L/min) and features adjustable settings with five clockwise turns required to increase pressure settings. Installation specifics include a torque range of 30-35 lbf ft (41-47 Nm) and an adjustment screw internal hex size of 5/32 in. (4 mm). The seal kit option available for this cartridge uses Viton material, ensuring compatibility with hydraulic fluids under varying conditions.
The Sun Hydraulics SQDBKQV (SQDBKQV) is a kickdown sequence valve designed to provide an unrestricted flow path from port 1 to port 2 once the inlet pressure exceeds the valve setting. This valve is suitable for applications where maintaining open flow is crucial, as it remains open as long as the pressure at port 1 surpasses that at port 2. To reset, the pressure at port 1 must drop below the valve setting, and flow from port 1 to port 2 must stop. It features a corrosion-resistant construction with options for external stainless steel or zinc-nickel plating, making it ideal for use in corrosive environments. The valve is not recommended for load-holding applications due to its design and functionality. The SQDBKQV incorporates Sun's floating style construction to minimize internal binding risks and ensure reliable performance despite installation torque variations or machining differences. It operates within a maximum pressure of 5000 psi (350 bar) and offers a typical response time of 25 ms. The main stage orifice is protected by a stainless steel screen, adding durability and reliability in various settings. The sequence cartridges are interchangeable across all three ports, maintaining consistency in flow path and cavity dimensions for a given frame size. This model supports a capacity of up to 15 gpm (60 L/min) and features adjustable settings with five clockwise turns required to increase pressure settings. Installation specifics include a torque range of 30-35 lbf ft (41-47 Nm) and an adjustment screw internal hex size of 5/32 in. (4 mm). The seal kit option available for this cartridge uses Viton material, ensuring compatibility with hydraulic fluids under varying conditions.
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.
- 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 | 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) | 2 in³/min.30 cc/min. |
| 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 | .40 lb0,20 kg |
| Seal kit - Cartridge | Viton: 990-011-006 |
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
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.