SUN HYDRAULICS
SCIALBN

***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 SCIALBN (SCIALBN) is a direct-acting sequence valve with an integrated reverse-flow check feature, designed to supply a secondary circuit with flow once the inlet port pressure surpasses the valve setting. This model includes a built-in check valve that facilitates reverse flow from port 2 to port 1. The valve's pressure setting regulates the pressure at port 1 in relation to the drain port 3. Notably, all three-port sequence cartridges are interchangeable, sharing the same flow path and cavity dimensions for consistent frame sizes. Despite being a zero pilot flow valve, maintaining a connection at port 3 is crucial to ensure proper function and avoid malfunction due to seal weepage if blocked. The SCIALBN is suitable for load-holding applications and can handle pressures up to 5000 psi (350 bar). It features EPDM seals for compatibility with phosphate ester fluids, though these seals are vulnerable to damage from petroleum-based substances. The design incorporates Sun's floating style construction, reducing risks of internal binding caused by installation torque or machining variations. Key specifications include a capacity of 120 gpm (480 L/min), response time of approximately 2 ms, and maximum leakage at reseat of 10 drops/min (0.7 cc/min). The valve accommodates adjustments through clockwise turns and features specific hex sizes for installation and adjustment purposes. With a model weight of 3.10 lb (1.40 kg), it comes equipped with Viton seal kits for enhanced durability.