Since the beginning, our products have been setting the standard for the screw-in hydraulic cartridge valve industry. Sun’s floating cartridge construction and cavity design approach allows products to operate precisely and reliably at higher pressures and flow rates in the most demanding applications. For 50 years, we’ve pioneered the advancement of fluid power with products that exceed industry performance standards. We also provide research support and internships to students of all ages, from all over the world, and are active in professional organizations like the National Fluid Power Association, American Society of Mechanical Engineers, British Fluid Power Association and the German Engineering Federation, or VDMA.