SUN HYDRAULICS
RPKSLWV

***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 RPKSLWV (RPKSLWV) is a pilot-operated, balanced poppet relief cartridge designed for efficient pressure regulation in hydraulic systems. These valves are normally closed and begin to open to the tank port when the inlet pressure reaches the set point, effectively throttling flow to maintain desired pressure levels. Known for their accuracy, smooth operation, and quiet performance, these valves offer a rapid response time of approximately 7 milliseconds. They feature a low pressure rise versus flow and are resistant to cavitation-related issues such as noise and manifold erosion. The RPKSLWV model is suitable for use in cross port relief circuits and can handle maximum pressure at port 2. It remains relatively unaffected by varying oil temperatures or contamination due to its robust construction. The main stage orifice is protected with a 150-micron stainless steel screen, ensuring durability and longevity. Notably, back pressure on the tank port is directly additive to the valve setting at a 1:1 ratio. This model also incorporates Sun's floating style construction, minimizing potential issues related to internal parts binding from installation torque or cavity machining variations. The valve is adjustable throughout its full range using W or Y controls unless a special setting is specified. For environments prone to corrosion, this cartridge valve can be configured with external stainless steel components or zinc-nickel plating. With a capacity of 200 gpm (760 L/min) and maximum operating pressure of 5000 psi (350 bar), the RPKSLWV offers reliable performance in demanding applications. Installation requires a torque setting between 350-375 lbf ft (474-508 Nm), while adjustment screw internal hex size measures at 5/32 inch (4 mm). This valve weighs approximately 2.50 lb (1.15 kg) and utilizes Viton seal kits for optimal sealing performance.