SUN HYDRAULICS
SXCBKBN

***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 SXCBKBN (SXCBKBN) 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 sequence valve is particularly suitable for load holding applications and features a floating style construction to reduce internal binding due to installation torque or machining variations. The valve controls pressure at port 1 relative to atmospheric venting, making it ideal for situations where a drain connection is not feasible. However, users should be aware that atmospherically referenced valves may experience external leakage or moisture ingress over time, with approximately 0.07 cc of fluid entering the spring chamber every 4000 cycles. Key specifications include a capacity of 15 gpm (60 L/min), a maximum operating pressure of 5000 psi (350 bar), and a typical response time of 2 ms. The valve has a maximum leakage rate at reseat of 10 drops/min (0.7 cc/min). Adjustments can be made with up to four clockwise turns to increase the setting, and it features various hex sizes for installation and adjustment: valve hex size is 7/8 in. (22.2 mm), adjustment screw internal hex size is 5/32 in. (4 mm), and locknut hex size is 9/16 in. (15 mm). The installation torque ranges from 30 to 35 lbf ft (41 to 47 Nm) with locknut torque between 80 to 90 lbf in. (9 to 10 Nm). Weighing just .30 lb (.15 kg), this model also comes with an optional Viton seal kit under the part number 990010006, ensuring compatibility and durability across various applications.