SUN HYDRAULICS
SQFBCAV

***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 SQFBCAV (Material Number: SQFBCAV) is a specialized kickdown sequence valve designed to open completely and maintain an open state once the pressure at inlet port 1 surpasses the preset valve setting. This creates an unrestricted flow path from port 1 to port 2, with the pressure setting at port 1 being relative to drain port 3. The valve remains open as long as the pressure at port 1 exceeds that at port 2. To reset, the pressure at port 1 must fall below the valve setting, flow from port 1 to port 2 must cease, and pressure at port 2 must be equal to or greater than that at port 1. This valve is functionally interchangeable with all three-port sequence cartridges of similar frame size, sharing the same flow path and cavity dimensions. It is not recommended for load-holding applications and features a main stage orifice protected by a 150-micron stainless steel screen. The maximum pressure at port 3 should not exceed 5000 psi (350 bar) and is directly additive to the valve setting in a 1:1 ratio. The valve is intended for use on the actuator side of hydraulic systems where flow through it must stop for resetting; if applied on the pump side, pump flow must be halted for reset. It incorporates Sun's floating style construction to minimize internal part binding due to excessive torque or machining variations. Key specifications include a capacity of up to 30 gpm (120 L/min), maximum operating pressure of 5000 psi (350 bar), typical response time of approximately 25 ms, and minimal leakage rates under specified conditions. The valve has specific installation torque requirements and utilizes Viton seal kits for optimal performance.