SUN HYDRAULICS
SCCBLBN

***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 SCCBLBN (SCCBLBN) is an atmospherically referenced, direct-acting sequence valve equipped with a reverse-flow check. This component is designed to supply a secondary circuit with flow once the inlet port 1 pressure surpasses the valve setting. It features an integral check valve allowing reverse flow from port 2 sequence back to port 1 inlet. The pressure setting controls the pressure at port 1 relative to the atmospheric vent, making it suitable for load holding applications. Notably, these valves are recommended for use in scenarios where establishing a drain connection is impractical, although they may experience external leakage or moisture ingress over time. The valve incorporates Sun's floating style construction, which minimizes internal part binding due to excessive installation torque or machining variations in cavity/cartridge configurations. It fits within the Cavity T-13A Series 1 and has a capacity of 15 gpm (60 L/min). 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 approximately 2 milliseconds, and maximum valve leakage upon reseating is limited to 10 drops per minute (0.7 cc/min). Additional specifications include a check cracking pressure of 40 psi (2.8 bar) and an adjustment feature that requires five clockwise turns to increase the setting. The valve hex size measures at .78 inches (22.2 mm), and it should be installed with a torque of 30-35 lbf ft (41-47 Nm). The adjustment screw internal hex size is .532 inches (4 mm), while the locknut hex size measures .916 inches (15 mm) with a torque requirement of 80-90 lbf in (9-10 Nm). The model weighs .30 lb (.15 kg) and utilizes Viton seals in its cartridge construction.