SUN HYDRAULICS
SCCBLEV

***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 SCCBLEV (SCCBLEV) is an atmospherically referenced, direct-acting sequence valve designed to supply a secondary circuit with flow once the pressure at the inlet port 1 exceeds the valve setting. This model incorporates an integral check valve to enable reverse flow from port 2 sequence to port 1 inlet, controlling the pressure at port 1 relative to the atmospheric vent. It is particularly suitable for load holding applications, especially in scenarios where a drain connection is not feasible. Over time, these valves may exhibit minor external leakage or allow moisture ingress into the spring chamber, with approximately one drop (0.07 cc) of fluid passing into the vented spring chamber every 4,000 cycles. The SCCBLEV features Sun's floating style construction that minimizes internal part binding due to excessive installation torque or cavity/cartridge machining variations. It fits into a Cavity T-13A and operates at a series 1 capacity of up to 15 gpm (60 L/min). The factory pressure settings are established at a flow rate of 2 in\u00b3/min (30 cc/min), with a maximum operating pressure of 5,000 psi (350 bar). The typical response time is about 2 milliseconds, and maximum valve leakage at reseat is rated at 10 drops/min (0.7 cc/min). The check cracking pressure stands at 40 psi (2.8 bar). For adjustments, users can increase the setting with up to five clockwise turns of the adjustment screw. The valve hex size measures 7/8 inch (22.2 mm), and it requires an installation torque between 30 and 35 lbf ft (41 and 47 Nm). The adjustment screw has an internal hex size of 5/32 inch (4 mm), while the locknut hex size is set at 9/16 inch (15 mm) with a torque requirement of between 80 and 90 lbf in (9 and 10 Nm). The model weighs approximately .30 lb (.15 kg) and uses Viton seal kits for its cartridge assembly.