SUN HYDRAULICS
SXCBCDN

***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 SXCBCDN (SXCBCDN) 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 setting. This sequence valve regulates the pressure at port 1 in relation to the atmospheric vent, making it suitable for load-holding applications. It is particularly useful in scenarios where establishing a drain connection is not possible. However, users should be aware that over time, these valves may experience external leakage or moisture ingress into the spring chamber, with approximately one drop (0.07 cc) of fluid entering the vented spring chamber every 4,000 cycles. The valve features Sun's floating style construction to reduce internal part binding due to excessive installation torque or variations in cavity/cartridge machining. It fits a T-13A cavity and has a series 1 capacity of 15 gpm (60 L/min). Factory pressure settings are established at 2 in/min (30 cc/min), and it can handle a maximum operating pressure of 5000 psi (350 bar). The typical response time is about 2 milliseconds, with maximum valve leakage upon reseating at 10 drops/min (0.7 cc/min). For adjustments, users can increase the setting by turning clockwise up to four turns. The valve has a hex size of 7/8 in. (22.2 mm) and requires an installation torque between 30 and 35 lbf ft (41 to 47 Nm). The adjustment screw has an internal hex size of 5/32 in. (4 mm), while the locknut hex size is 9/16 in. (15 mm), requiring a torque of 80 to 90 lbf in. (9 to 10 Nm). The model weighs .30 lb (.15 kg) and uses Viton seal kits identified by cartridge number: 990010006.