SUN HYDRAULICS
SCEBKEN

***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 SCEBKEN (SCEBKEN) is an atmospherically referenced, direct-acting sequence valve with a reverse-flow check, designed to supply a secondary circuit with flow once the inlet port pressure exceeds the valve setting. This model includes an integral check valve to facilitate reverse flow from port 2 to port 1. The sequence valve's pressure setting manages the pressure at port 1 in relation to the atmospheric vent, making it suitable for load holding applications where a drain connection is not feasible. Notably, these valves may experience external leakage or moisture ingress into the spring chamber over time, with approximately one drop (0.07 cc) of fluid entering the vented spring chamber every 4000 cycles. The SCEBKEN features Sun's floating-style construction, minimizing internal part binding due to excessive installation torque or machining variations. It fits a T-5A cavity and offers a capacity of 30 gpm (120 L/min), with factory pressure settings established at 2 in/min (30 cc/min). The maximum operating pressure is rated at 5000 psi (350 bar), and it exhibits a typical response time of 2 ms. Maximum valve leakage at reseat is limited to 10 drops/min (0.7 cc/min), while the check cracking pressure stands at 25 psi (1.7 bar). To increase settings, users can make up to five clockwise turns on the adjustment mechanism. Installation specifications include a valve hex size of 1-1/8 inches (28.6 mm) and an installation torque requirement of 45-50 lbf\u00b7ft (61-68 Nm). The adjustment screw has an internal hex size of 5/32 inches (4 mm), with a locknut hex size of 9/16 inches (15 mm) and locknut torque set between 80-90 lbf\u00b7in (9-10 Nm). The model weighs approximately .60 lb (.30 kg) and is compatible with Viton seal kits identified by cartridge number: 990203006.