SUN HYDRAULICS
SCIACCN

***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 SCIACCN (Material Number: SCIACCN) is a direct-acting sequence valve with an integrated reverse flow check, designed to supply a secondary circuit with flow when the pressure at inlet port 1 surpasses the valve setting. This valve features an integral check valve that allows reverse flow from port 2 to port 1. Its pressure setting controls the pressure at port 1 relative to the drain port 3, and all three-port sequence cartridges are interchangeable within a given frame size. Despite being a zero pilot flow valve, it's crucial to connect port 3 to maintain a pressure reference in the control chamber; otherwise, blocking it can lead to malfunction due to reciprocating seal weepage. The maximum allowable pressure at port 3 is additive to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar). This model is suitable for load holding applications and incorporates Sun's floating style construction, minimizing internal parts binding risks due to excessive installation torque or machining variations. It supports phosphate ester fluids with EPDM seals and cautions against exposure to petroleum-based fluids. The SCIACCN has a capacity of up to 120 gpm (480 L/min) and operates under pressures up to 5000 psi (350 bar), with typical response times around 2 ms. The maximum leakage at reseat is limited to 10 drops/min (0.7 cc/min), and it features adjustable settings with specific torque requirements for installation and locknut adjustments. The cartridge weighs approximately 3.10 lb (1.40 kg) and includes Viton seal kits for maintenance or replacement needs.