SUN HYDRAULICS
SCEBCBN

***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 SCEBCBN (SCEBCBN) is an atmospherically referenced, direct-acting sequence valve with a reverse-flow check designed to supply a secondary circuit with flow once the pressure at inlet port 1 exceeds the valve setting. This model incorporates an integral check valve that allows reverse flow from port 2 sequence to port 1 inlet. The pressure setting of this sequence valve controls the pressure at port 1 relative to the atmospheric vent, making it suitable for load holding applications. It is important to note that atmospherically referenced valves should only be used where a drain connection is not possible, as they may leak externally or allow moisture into the spring chamber over time. The Sun Hydraulics SCEBCBN features floating style construction to minimize internal parts binding due to excessive installation torque or cavity/cartridge machining variations. It fits into a T-5A cavity and has a series capacity of 30 gpm (120 L/min). Factory pressure settings are established at 2 in/min (30 cc/min), with a maximum operating pressure of 5000 psi (350 bar) and typical response time of 2 ms. Maximum valve leakage at reseat is rated at 10 drops/min (0.7 cc/min), and check cracking pressure is set at 25 psi (1.7 bar). The adjustment requires approximately five clockwise turns to increase setting, with specific torque requirements for installation and adjustments provided in detail for precise application needs. The valve's dimensions include a hex size of 1-1/8 inches (28.6 mm) and an installation torque range of 45 - 50 lbf-ft (61 - 68 Nm). The adjustment screw internal hex size is specified as 5/32 inches (4 mm), while the locknut hex size is set at 9/16 inches (15 mm) with a locknut torque range of 80 - 90 lbf-in (9 -10 Nm). The model weighs approximately .60 lb (.30 kg) and utilizes Viton seals in its cartridge design, specifically identified by seal kit number: 990203006.