SUN HYDRAULICS
SQHBKDN
$292.98 USD
- SUN HYDRAULICS
- Material:SQHBKDN
- Model:SQHB-KDN
- 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 SQHBKDN (SQHBKDN) is a versatile kickdown sequence valve designed for hydraulic systems requiring an automatic opening and holding function once a specified pressure threshold is exceeded. This valve allows an unrestricted flow path from port 1 to port 2 when the inlet pressure surpasses the preset level, maintaining this open state until the inlet pressure falls below the set point and flow between these ports ceases. The valve's design ensures that it remains open as long as the pressure at port 1 is higher than at port 2, necessitating a reset condition where pressures equalize or reverse. Its robust construction includes a 150-micron stainless steel screen protecting the main stage orifice and utilizes Sun's floating style to prevent internal binding due to installation torque variations. The SQHBKDN is not recommended for load-holding applications but excels in actuator-side installations where flow interruption allows for reset operations. With a maximum operating pressure of 5000 psi (350 bar) and a capacity of up to 60 gpm (240 L/min), it offers reliable performance in demanding environments. The valve's response time is typically around 25 ms, ensuring swift actuation under dynamic conditions. Physical dimensions include a valve hex size of 1-1/4 inches (31.8 mm) and an installation torque range of 150-160 lbf ft (203-217 Nm). Adjustments are made via an internal hex screw, with five clockwise turns required to increase settings, while a locknut ensures secure positioning with a torque specification of 80-90 lbf in (9-10 Nm). Weighing approximately 1.50 lb (0.70 kg), this sequence valve provides robust functionality in hydraulic sequencing applications where precise control over flow paths is essential.
The Sun Hydraulics SQHBKDN (SQHBKDN) is a versatile kickdown sequence valve designed for hydraulic systems requiring an automatic opening and holding function once a specified pressure threshold is exceeded. This valve allows an unrestricted flow path from port 1 to port 2 when the inlet pressure surpasses the preset level, maintaining this open state until the inlet pressure falls below the set point and flow between these ports ceases. The valve's design ensures that it remains open as long as the pressure at port 1 is higher than at port 2, necessitating a reset condition where pressures equalize or reverse. Its robust construction includes a 150-micron stainless steel screen protecting the main stage orifice and utilizes Sun's floating style to prevent internal binding due to installation torque variations. The SQHBKDN is not recommended for load-holding applications but excels in actuator-side installations where flow interruption allows for reset operations. With a maximum operating pressure of 5000 psi (350 bar) and a capacity of up to 60 gpm (240 L/min), it offers reliable performance in demanding environments. The valve's response time is typically around 25 ms, ensuring swift actuation under dynamic conditions. Physical dimensions include a valve hex size of 1-1/4 inches (31.8 mm) and an installation torque range of 150-160 lbf ft (203-217 Nm). Adjustments are made via an internal hex screw, with five clockwise turns required to increase settings, while a locknut ensures secure positioning with a torque specification of 80-90 lbf in (9-10 Nm). Weighing approximately 1.50 lb (0.70 kg), this sequence valve provides robust functionality in hydraulic sequencing applications where precise control over flow paths is essential.
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 |
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