SUN HYDRAULICS
RPKSCNV

***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 RPKSCNV (RPKSCNV) is a pilot-operated, balanced poppet relief cartridge designed as a normally closed pressure regulating valve. It opens to tank port 2 when the pressure at inlet port 1 reaches the set value, effectively throttling flow to maintain regulated pressure. These valves are known for their accuracy, smooth operation, quiet performance, and fast response time with minimal pressure rise against flow. The design ensures immunity to common cavitation issues such as noise and manifold erosion due to internal modulation within the cartridge. This valve can handle maximum pressure at port 2, making it suitable for cross-port relief circuits. It remains relatively unaffected by variations in oil temperature and contamination, with its main stage orifice protected by a 150-micron stainless steel screen. Additionally, back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. The RPKSCNV offers adjustable settings using W or Y controls and can be specified with or without special settings. Corrosion-resistant versions are available with either stainless steel or zinc-nickel plated components. This model incorporates Sun's floating style construction to reduce binding risks from excessive installation torque or machining variations. With a capacity of 200 gpm (760 L/min) and a maximum operating pressure of 5000 psi (350 bar), it features a typical response time of 7 ms and minimal leakage at reseat conditions. The valve's installation torque is between 350-375 lbf ft (474-508 Nm), while weighing approximately 2.50 lb (1.15 kg). The RPKSCNV is designed for use in challenging environments where precise pressure regulation is critical.