SUN HYDRAULICS
SCEACWN

***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 SCEACWN (SCEACWN) is a direct-acting sequence valve with an integral reverse flow check, designed to manage secondary circuit flow when the inlet port pressure exceeds the valve setting. It features a built-in check valve that allows reverse flow from port 2 to port 1. The valve's pressure setting controls the pressure at port 1 relative to the drain port 3, which must be connected to maintain proper functionality. This zero pilot flow valve can malfunction if port 3 is blocked due to seal weepage. The pressure at port 3 directly affects the valve setting and should not exceed 5000 psi (350 bar). This model is suitable for load-holding applications and offers physical and functional interchangeability across all three-port sequence cartridges of the same frame size. It incorporates Sun's floating style construction, minimizing internal part binding from excessive installation torque or cavity machining variations. The SCEACWN has a capacity of 30 gpm (120 L/min) and operates at a maximum pressure of 5000 psi (350 bar). Its typical response time is approximately 2 ms, with maximum leakage at reseat being about 10 drops/min (0.7 cc/min). The check cracking pressure stands at 25 psi (1.7 bar), and adjustments are made by turning clockwise up to five turns to increase settings. The valve hex size measures at 1-1/8 inches (28.6 mm), with an installation torque range of 45-50 lbf ft (61-68 Nm). The adjustment screw uses an internal hex size of 5/32 inches (4 mm), while the locknut hex size is set at 9/16 inches (15 mm) with a torque requirement of 80-90 lbf in (9-10 Nm). Weighing approximately .60 lb (.30 kg), it comes with a Viton seal kit for cartridge maintenance, labeled as part number 990202006.