SUN HYDRAULICS
SCEBLAN

***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 SCEBLAN (SCEBLAN) is an atmospherically referenced, direct-acting sequence valve featuring a reverse-flow check. This valve is designed to supply a secondary circuit with flow once the pressure at inlet port 1 surpasses the valve setting. It includes an integral check valve that allows reverse flow from port 2 sequence to port 1 inlet. The pressure setting of this sequence valve manages the pressure at port 1 relative to the atmospheric vent, making it suitable for load holding applications where drain connections are not feasible. Over time, these valves may experience external leakage or moisture ingress into the spring chamber, with approximately one drop (0.07 cc) of fluid entering the vented spring chamber every 4000 cycles. The Sun SCEBLAN employs floating style construction to reduce the risk of internal parts binding due to excessive installation torque or machining variations. It fits into a T-5A cavity and supports a flow capacity of up to 30 gpm (120 L/min), with maximum operating pressure reaching 5000 psi (350 bar). The typical response time is around 2 milliseconds, and it has a maximum valve leakage at reseat of 10 drops/min (0.7 cc/min). The check cracking pressure stands at 25 psi (1.7 bar), with adjustments made via clockwise turns up to five and a half times to increase settings. This model requires specific installation torques: Valve Hex Size is 1-1/8 in. (28.6 mm) with an installation torque between 45 - 50 lbf ft (61 - 68 Nm); Adjustment Screw Internal Hex Size is 5/32 in. (4 mm); Locknut Hex Size is 9/16 in. (15 mm) with locknut torque ranging from 80 - 90 lbf in. (9 - 10 Nm). The model weighs approximately .60 lb (.30 kg) and uses Viton seal kits, specifically cartridge model number: 990203006.