SUN HYDRAULICS
SCEAKAN

***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 SCEAKAN (SCEAKAN) is a direct-acting sequence valve with an integrated reverse-flow check, designed to supply a secondary circuit with flow once the pressure at inlet port 1 exceeds the valve setting. This valve features an integral check valve allowing reverse flow from port 2 to port 1. It controls the pressure at port 1 relative to the drain port 3, and despite being a zero pilot flow valve, requires port 3 to be connected for proper functioning. The pressure at port 3 directly adds to the valve setting in a 1:1 ratio and should not exceed 5000 psi (350 bar). The SCEAKAN is suitable for load-holding applications and offers interchangeability among all three-port sequence cartridges of similar frame size. It incorporates Sun's floating style construction to reduce internal binding risks due to installation torque or machining variations. Key specifications include a capacity of 30 gpm (120 L/min), maximum operating pressure of 5000 psi (350 bar), typical response time of 2 ms, and maximum leakage at reseat of 10 drops/min (0.7 cc/min). The check cracking pressure is set at 25 psi (1.7 bar), with adjustment settings allowing up to five clockwise turns for increased pressure settings. Installation requirements specify a torque range of 45-50 lbf ft (61-68 Nm) for the valve hex size of 1-1/8 in. (28.6 mm), while the locknut requires a torque of 80-90 lbf in. (9-10 Nm). The model weighs approximately .60 lb (.30 kg) and utilizes Viton seal kits under part number 990202006 for optimal performance and durability in hydraulic systems.