SUN HYDRAULICS
SQJBLDN

***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 SQJBLDN (SQJBLDN) is a kickdown sequence valve designed to open completely and maintain an open state once the inlet port pressure surpasses the set threshold, facilitating unrestricted flow from port 1 to port 2. This valve is particularly suitable for applications where pressure management is crucial, as it requires the pressure at port 1 to exceed that at port 2 for continued operation. The valve resets when the pressure drops below its setting, with flow ceasing between ports and equalizing pressures. Notably, this model should not be used in load holding applications due to its design characteristics. The SQJBLDN features a robust construction with a main stage orifice protected by a 150-micron stainless steel screen, ensuring durability and reliable performance under high-pressure conditions up to 5000 psi (350 bar). Its floating style construction minimizes internal binding risks due to installation torque or machining variations. The valve's cavity is T-19A Series 4 with a capacity of up to 120 gpm (480 L/min), making it versatile for various hydraulic applications. For optimal performance, this sequence valve should be installed on the actuator side of the system since flow must cease for resetting. The adjustment mechanism allows for fine-tuning with up to 5.5 clockwise turns to increase settings, while installation requires specific torque values for stability and safety. The SQJBLDN weighs approximately 3.10 lb (1.40 kg) and includes Viton seal kits for enhanced compatibility with hydraulic fluids.