SUN HYDRAULICS
SQDBJWN
$91.14 USD
- SUN HYDRAULICS
- Material:SQDBJWN
- Model:SQDB-JWN
- 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 SQDBJWN (SQDBJWN) is a versatile kickdown sequence valve designed for hydraulic systems where a reliable and consistent flow path is essential. This valve kicks completely open and maintains an unrestricted flow from port 1 to port 2 once the inlet pressure exceeds the preset threshold, making it ideal for applications requiring precise pressure control. The valve remains open as long as the inlet pressure surpasses the outlet pressure, and it resets only when certain conditions are met: the pressure at port 1 must drop below the set point, flow must stop, and outlet pressure must equal or exceed inlet pressure. This model features interchangeable cartridges across all three ports, ensuring compatibility within its frame size. Notably, it should not be used in load-holding scenarios due to its design characteristics. Constructed with corrosion-resistant materials, this valve offers options for external stainless steel or zinc-nickel plating to withstand harsh environments. The Sun floating style construction minimizes internal binding risks during installation or due to machining variations. It operates with a maximum capacity of 15 gpm (60 L/min) and withstands pressures up to 5000 psi (350 bar). The response time is typically around 25 ms, with minimal leakage at specified viscosities. Installation requires specific torque settings: 30-35 lbf ft (41-47 Nm) for the valve and 80-90 lbf in (9-10 Nm) for the locknut. Seal kits are available in Viton material for maintenance needs. With these specifications, the SQDBJWN model is suited for actuator-side applications where precise sequencing is necessary without compromising system integrity under high pressures.
The Sun Hydraulics SQDBJWN (SQDBJWN) is a versatile kickdown sequence valve designed for hydraulic systems where a reliable and consistent flow path is essential. This valve kicks completely open and maintains an unrestricted flow from port 1 to port 2 once the inlet pressure exceeds the preset threshold, making it ideal for applications requiring precise pressure control. The valve remains open as long as the inlet pressure surpasses the outlet pressure, and it resets only when certain conditions are met: the pressure at port 1 must drop below the set point, flow must stop, and outlet pressure must equal or exceed inlet pressure. This model features interchangeable cartridges across all three ports, ensuring compatibility within its frame size. Notably, it should not be used in load-holding scenarios due to its design characteristics. Constructed with corrosion-resistant materials, this valve offers options for external stainless steel or zinc-nickel plating to withstand harsh environments. The Sun floating style construction minimizes internal binding risks during installation or due to machining variations. It operates with a maximum capacity of 15 gpm (60 L/min) and withstands pressures up to 5000 psi (350 bar). The response time is typically around 25 ms, with minimal leakage at specified viscosities. Installation requires specific torque settings: 30-35 lbf ft (41-47 Nm) for the valve and 80-90 lbf in (9-10 Nm) for the locknut. Seal kits are available in Viton material for maintenance needs. With these specifications, the SQDBJWN model is suited for actuator-side applications where precise sequencing is necessary without compromising system integrity under high pressures.
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.