SUN HYDRAULICS
SQFBLDV

***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 SQFBLDV (SQFBLDV) is a highly specialized kickdown sequence valve designed for precise hydraulic control applications. This valve operates by kicking completely open and maintaining an unrestricted flow path from port 1 to port 2 once the inlet pressure surpasses the preset threshold, with the setting being relative to the drain port 3. It remains open as long as the pressure at port 1 exceeds that at port 2. To reset, conditions must be met where the pressure at port 1 falls below its setting, flow ceases between ports, and pressure at port 2 is equal to or greater than that at port 1. Notably, this valve should not be utilized in load-holding scenarios. The SQFBLDV features a robust design incorporating Sun\u2019s floating style construction, minimizing internal part binding due to installation torque or machining variations. It is protected by a stainless steel screen over the main stage orifice and supports a maximum operating pressure of 5000 psi (350 bar). The valve\u2019s response time is typically around 25 ms, with minimal leakage rates. It can handle capacities up to 30 gpm (120 L/min), making it suitable for high-flow requirements. This model is interchangeable with other three-port sequence cartridges of similar frame sizes, ensuring flexibility in application setups. It\u2019s intended for use on the actuator side of hydraulic systems where flow cessation is necessary for resetting; if applied on the pump side, pump flow must also be halted for reset functionality. Installation specifics include a hex size of 1-1/8 inches and requires precise torque settings during installation and adjustment processes to ensure optimal performance.