SUN HYDRAULICS
SCIALAN

***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 SCIALAN (Material Number: SCIALAN) is a direct-acting sequence valve designed with an integrated reverse flow check feature. This valve efficiently supplies a secondary circuit with flow once the input pressure at port 1 surpasses the preset valve setting. It incorporates an integral check valve to facilitate reverse flow from port 2 to port 1, ensuring smooth operation in load holding applications. The sequence valve controls the pressure at port 1 relative to the drain port 3, and all three-port sequence cartridges are interchangeable within the same frame size, providing versatility in application. This model is zero pilot flow, requiring a connection at port 3 to maintain pressure reference; blockage here can lead to malfunction due to seal weepage. The SCIALAN accommodates pressures up to 5000 psi (350 bar) and features a response time of approximately 2 milliseconds. It supports a capacity of up to 120 gpm (480 L/min), making it suitable for high-flow applications. The valve's design incorporates Sun's floating style construction, which minimizes internal binding risks due to installation torque or machining variations. This model is compatible with systems using phosphate ester fluids when equipped with EPDM seals, although exposure to petroleum-based substances will damage these seals. Additional specifications include a factory pressure setting established at 2 in/min (30 cc/min), maximum leakage of 10 drops/min (0.7 cc/min) upon reseat, and check cracking pressure set at 25 psi (1.7 bar). The adjustment mechanism allows for five turns clockwise to increase settings, with specific torque requirements for installation and locknut adjustments detailed as well. The SCIALAN weighs approximately 3.10 lb (1.40 kg) and is compatible with Viton seal kits for maintenance and repair purposes.