SUN HYDRAULICS
SCCALBV

***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 SCCALBV (SCCALBV) is a direct-acting sequence valve designed to manage flow in hydraulic systems by supplying a secondary circuit only when the inlet port pressure exceeds the valve's set point. It features an integral check valve that allows reverse flow from port 2 to port 1, enabling versatile application in load-holding scenarios. This model is characterized by its zero pilot flow design; however, it requires the drain port 3 to be connected to maintain accurate pressure referencing in the control chamber. The valve is built to withstand pressures up to 5000 psi (350 bar) and has a factory pressure setting established at 2 in/min (30 cc/min). This sequence valve is suitable for use with phosphate ester fluids when equipped with EPDM seals, which are incompatible with petroleum-based substances. For enhanced durability in corrosive environments, corrosion-resistant options are available with stainless steel or zinc-nickel plated components. The SCCALBV uses Sun's floating style construction, minimizing risks of internal binding due to installation torque variations. The valve supports a maximum flow capacity of 15 gpm (60 L/min), and its response time typically measures around 2 ms. The check cracking pressure is set at 40 psi (2.8 bar), and adjustments can be made via an internal hex screw, requiring up to five clockwise turns for increased settings. Installation specifications include a hex size of 7/8 inch (22.2 mm) and an installation torque range of 30\u201335 lbf\u00b7ft (41\u201347 Nm). Weighing approximately .30 lb (.15 kg), the SCCALBV also features a locknut torque requirement of 80\u201390 lbf\u00b7in (9\u201310 Nm).