The Sun Hydraulics RDDALSN is a direct-acting, differential area, poppet-type relief valve designed for precise pressure control in hydraulic systems. As a screw-in cartridge valve, it provides a compact and easy-to-install solution for limiting system pressure to a specific set point. Its poppet design ensures fast response times to pressure spikes and offers very low leakage, making it highly efficient and reliable for protecting hydraulic components from over-pressurization. The RDDALSN is suitable for a wide range of industrial and mobile hydraulic applications where dependable pressure relief is critical.