SUN HYDRAULICS
SXCBKDN

***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 SXCBKDN (SXCBKDN) is an atmospherically referenced, direct-acting sequence valve designed to supply a secondary circuit with flow once the inlet port pressure exceeds the valve setting. This product is particularly suited for load holding applications where a drain connection is not feasible. Over time, these valves may experience external leakage or moisture ingress into the spring chamber, with approximately 0.07 cc of fluid entering the vented spring chamber every 4000 cycles. The SXCBKDN incorporates Sun's floating style construction to reduce internal part binding due to excessive installation torque or machining variations. It features a cavity T-13A, Series 1 design with a capacity of 15 gpm (60 L/min) and can withstand a maximum operating pressure of 5000 psi (350 bar). The response time is typically around 2 ms, and the maximum valve leakage at reseat is about 10 drops/min (0.7 cc/min). To adjust the pressure setting, users can turn clockwise up to four times. The valve has a hex size of 7/8 inch (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 inch (4 mm), while the locknut hex size is 9/16 inch (15 mm), requiring a torque of 80 to 90 lbf in (9 to 10 Nm). The model weighs approximately .30 lb (.15 kg) and uses Viton seal kits for cartridge sealing, specifically model number 990010006.