SUN HYDRAULICS
SCCALDN/AP

***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 SCCALDN/AP (SCCALDN/AP) is a direct-acting sequence valve with a reverse flow check, designed to manage secondary circuit flow once the inlet port 1 pressure surpasses the valve setting. This model features an integral check valve for reverse flow from port 2 to port 1 and requires port 3 to be connected as a drain to maintain pressure reference in the control chamber. It's crucial that pressure at port 3 does not exceed 5000 psi, as it directly adds to the valve setting on a 1:1 ratio. Ideal for load holding applications, this valve is interchangeable with other three-port sequence cartridges of similar frame size, offering identical flow paths and cavity compatibility. The SCCALDN/AP model includes corrosion-resistant components, identified by the 'AP' suffix in its model code, signifying stainless steel parts suitable for corrosive environments. The valve utilizes Sun's floating style construction to reduce internal binding risks due to excessive installation torque or machining variations. It supports systems using phosphate ester fluids but requires caution against exposure to petroleum-based substances if configured with EPDM seals. Key specifications include a maximum operating pressure of 5000 psi and a capacity of 15 gpm (60 L/min). It has a typical response time of 2 milliseconds and maximum valve leakage at reseat of up to 10 drops/minute. Adjustment settings involve up to five clockwise turns for increased pressure settings, with specific torque requirements for installation and adjustment components. The cartridge's hex sizes are defined for precise fitting during setup, ensuring optimal performance in demanding hydraulic applications.