SUN HYDRAULICS
SQFBJEN
$136.02 USD
- SUN HYDRAULICS
- Material:SQFBJEN
- Model:SQFB-JEN
- 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 SQFBJEN (SQFBJEN) 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 remains open as long as the pressure at port 1 is higher than that at port 2, and resets only when the pressure drops below the set point and flow ceases. It is essential for applications where a reliable sequence of operations is needed, particularly on the actuator side of hydraulic systems. The valve's design incorporates a floating style construction to minimize internal binding due to installation torque or machining variations. The main stage orifice is protected by a 150-micron stainless steel screen, ensuring durability and performance under high-pressure conditions up to 5000 psi (350 bar). With a capacity of 30 gpm (120 L/min) and a typical response time of 25 ms, this valve offers efficient operation in various hydraulic systems. It features interchangeability with other three-port sequence cartridges and should not be used in load-holding applications. The valve's installation requires specific torques for optimal performance: 45-50 lbf ft (61-68 Nm) for installation torque, with an adjustment screw internal hex size of 5/32 in. (4 mm), and locknut torque between 80-90 lbf in. (9-10 Nm). The model weighs approximately .50 lb (0.25 kg) and utilizes Viton seals for enhanced sealing capabilities.
The Sun Hydraulics SQFBJEN (SQFBJEN) 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 remains open as long as the pressure at port 1 is higher than that at port 2, and resets only when the pressure drops below the set point and flow ceases. It is essential for applications where a reliable sequence of operations is needed, particularly on the actuator side of hydraulic systems. The valve's design incorporates a floating style construction to minimize internal binding due to installation torque or machining variations. The main stage orifice is protected by a 150-micron stainless steel screen, ensuring durability and performance under high-pressure conditions up to 5000 psi (350 bar). With a capacity of 30 gpm (120 L/min) and a typical response time of 25 ms, this valve offers efficient operation in various hydraulic systems. It features interchangeability with other three-port sequence cartridges and should not be used in load-holding applications. The valve's installation requires specific torques for optimal performance: 45-50 lbf ft (61-68 Nm) for installation torque, with an adjustment screw internal hex size of 5/32 in. (4 mm), and locknut torque between 80-90 lbf in. (9-10 Nm). The model weighs approximately .50 lb (0.25 kg) and utilizes Viton seals for enhanced sealing capabilities.
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-2A |
| Series | 2 |
| Capacity | 30 gpm120 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) | 3 in³/min.50 cc/min. |
| Adjustment - Number of Clockwise Turns to Increase Setting | 55 |
| Valve Hex Size | 1 1/8 in.28,6 mm |
| Valve Installation Torque | 45 - 50 lbf ft61 - 68 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 | .50 lb0,25 kg |
| Seal kit - Cartridge | Viton: 990-202-006 |
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- 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.