SUN HYDRAULICS
SCIACWV

***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 SCIACWV (SCIACWV) is a direct-acting sequence valve equipped with a reverse flow check, designed to supply a secondary circuit once the inlet port pressure exceeds the valve setting. This model incorporates an integral check valve to facilitate reverse flow from port 2 to port 1. The pressure setting at port 1 is controlled relative to the drain port 3, and all three-port sequence cartridges are interchangeable in terms of flow path and cavity size. Despite being a zero pilot flow valve, it requires the drain port connection to maintain pressure reference; blocking this can lead to malfunction due to seal weepage. The maximum allowable pressure at port 3 is 5000 psi (350 bar), and it is suitable for load-holding applications. The valve features Sun's floating style construction, minimizing internal part binding due to installation torque or machining variations. The SCIACWV has a capacity of 120 gpm (480 L/min) and operates at a maximum pressure of 5000 psi (350 bar). Its response time is typically around 2 ms, with maximum leakage at reseat being approximately 10 drops/min (0.7 cc/min). The check cracking pressure stands at 25 psi (1.7 bar), with adjustments possible through five clockwise turns. Installation specifications include a hex size of 1-5/8 inches (41.3 mm) and torque range between 350-375 lbf ft (474-508 Nm). The model weighs approximately 3.10 lb (1.40 kg) and uses Viton seals, requiring caution against exposure to petroleum-based fluids if configured with EPDM seals for phosphate ester fluids systems.