SUN HYDRAULICS
SCCBCDN

***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 SCCBCDN (SCCBCDN) is an atmospherically referenced, direct-acting sequence valve equipped with a reverse flow check feature. It is designed to supply a secondary circuit with flow once the inlet port 1 pressure surpasses the valve setting. The integral check valve allows reverse flow from port 2 back to port 1, making it suitable for load holding applications. This sequence valve controls pressure at port 1 relative to atmospheric venting and should only be used where a drain connection is not feasible, as it may leak externally or allow moisture into the spring chamber over time. The design incorporates Sun's floating style construction to minimize internal part binding due to excessive installation torque or machining variations. The SCCBCDN has a capacity of 15 gpm (60 L/min) and operates at a maximum pressure of 5000 psi (350 bar). It features a typical response time of 2 ms and allows maximum valve leakage at reseat of 10 drops/min (0.7 cc/min). The check cracking pressure is set at 40 psi (2.8 bar), and the adjustment mechanism requires approximately five turns clockwise to increase the setting. Installation requires specific torque settings: valve hex size is 7/8 in. (22.2 mm), with installation torque between 30-35 lbf ft (41-47 Nm), and locknut torque between 80-90 lbf in. (9-10 Nm). The model weighs approximately .30 lb (.15 kg) and uses Viton seals, with a seal kit available under cartridge number: 990010006. This product's unique features make it particularly effective in scenarios where traditional valves might struggle due to environmental constraints, offering reliable performance where drain connections are impractical or impossible.