SUN HYDRAULICS
SXCBKCN

***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 SXCBKCN (SXCBKCN) is an atmospherically referenced, direct-acting sequence valve designed to supply a secondary circuit with flow once the pressure at the inlet port 1 surpasses the valve's set threshold. This sequence valve manages the pressure at port 1 relative to the atmospheric vent, making it suitable for load-holding applications. It is important to note that atmospherically referenced valves are ideal for situations where a drain connection is not feasible. However, they may experience external leakage or allow 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 SXCBKCN incorporates Sun's floating style construction to minimize internal parts binding due to excessive installation torque or machining variations in cavities and cartridges. It features a T-13A cavity and has a capacity of 15 gpm (60 L/min). The factory pressure settings are established at 2 in/min (30 cc/min), with a maximum operating pressure of 5000 psi (350 bar). The typical response time is around 2 ms, and maximum valve leakage at reseat is limited to 10 drops/min (0.7 cc/min). Adjustment can be made through 4-4/4 clockwise turns to increase setting, with a valve hex size of 7/8 in. (22.2 mm) and an installation torque between 30 - 35 lbf ft (41 - 47 Nm). The adjustment screw internal hex size is 5/32 in. (4 mm), while the locknut hex size measures at 9/16 in. (15 mm) with a locknut torque of 80 - 90 lbf in. (9 -10 Nm). This model weighs approximately .30 lb (.15 kg) and uses a Viton seal kit cartridge: part number 990010006.