SUN HYDRAULICS
RPKSKNV

***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 RPKSKNV (RPKSKNV) is a pilot-operated, balanced-poppet relief cartridge valve designed for precise pressure regulation. This normally closed valve begins to open when the inlet pressure at port 1 reaches the designated setting, allowing flow to tank port 2 to maintain consistent pressure levels. Known for its accuracy, smooth operation, and low noise, the RPKSKNV is engineered to handle varying oil temperatures and contamination effectively. It is suitable for cross-port relief circuits due to its ability to accept maximum pressure at port 2. The valve\u2019s main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring durability and reliability in challenging environments. The RPKSKNV features corrosion-resistant components with optional external finishes in stainless steel or zinc-nickel plating, extending its application in corrosive conditions. Adjustment options include W and Y controls, which can be specified with or without a special setting; without a special setting, the valve remains adjustable throughout its full range. The valve\u2019s design incorporates Sun\u2019s floating style construction to prevent internal binding from installation torque or machining variations. With a capacity of 200 gpm (760 L/min) and maximum operating pressure of 5000 psi (350 bar), this valve offers a typical response time of 7 ms and minimal leakage at reseat. Installation specifics include a hex size of 1-5/8 inches (41.3 mm) and torque requirements between 350-375 lbf-ft (474-508 Nm). Weighing in at 2.50 lbs (1.15 kg), it also includes an adjustment screw internal hex size of 5/32 inches (4 mm) and locknut torque specifications of 80-90 lbf-in (9-10 Nm). The RPKSKNV is designed for high-performance applications where precise pressure control is critical.