SUN HYDRAULICS
SCIALCN

***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 SCIALCN (SCIALCN) is a direct-acting sequence valve designed with an integral reverse flow check valve, making it ideal for applications requiring controlled flow to a secondary circuit once the inlet pressure exceeds the valve setting. This model is equipped with a check valve that allows reverse flow from port 2 to port 1, ensuring flexibility in hydraulic circuit designs. The SCIALCN is built with interchangeable 3-port sequence cartridges, maintaining consistent flow paths and cavity compatibility across frame sizes. Notably, it features zero pilot flow; however, port 3 must be connected to maintain pressure references in the control chamber to prevent malfunction due to seal weepage. The maximum pressure at port 3 should not surpass 5000 psi (350 bar), directly adding to the valve setting at a 1:1 ratio. This sequence valve is particularly suitable for load-holding applications and incorporates EPDM seals for use in systems with phosphate ester fluids while avoiding petroleum-based products that could damage the seals. The floating style construction minimizes internal part binding risks due to excessive installation torque or machining variations. The SCIALCN can handle capacities up to 120 gpm (480 L/min) and operates efficiently under pressures as high as 5000 psi (350 bar). It features a typical response time of 2 ms and offers maximum leakage at reseat of just 10 drops/min (0.7 cc/min). The adjustment mechanism allows up to five clockwise turns for setting increases, with specific torque requirements for installation and locknut adjustments ensuring secure operation. This model weighs approximately 3.10 lb (1.40 kg) and includes a seal kit option with Viton material for enhanced durability in demanding environments.