SUN HYDRAULICS
RPESLNN

***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 RPESLNN (RPESLNN) is a pilot-operated, balanced poppet relief cartridge designed for precise pressure regulation in hydraulic systems. This valve remains normally closed, opening to the tank port when the inlet pressure reaches the set threshold, thus throttling flow to maintain desired pressure levels. It is characterized by its accuracy, smooth operation, quiet performance, and rapid response time of approximately 7 milliseconds. The valve features a low-pressure rise versus flow and is designed to be immune to cavitation issues such as noise and manifold erosion due to its internal modulating mechanism. This relief cartridge can handle maximum pressures at port 2, making it suitable for cross-port relief circuits. It performs reliably across varying oil temperatures and in environments with oil-borne contamination. The main stage orifice is safeguarded by a 150-micron stainless steel screen, which enhances durability and performance consistency. Additionally, this valve is ideal for load-holding applications due to its design. The RPESLNN incorporates Sun's floating style construction to prevent internal parts from binding due to excessive installation torque or machining variations. It supports adjustable settings through W or Y controls, providing flexibility in application without compromising stability. The valve's cavity size is T-10A with a series 1 capacity of 25 gpm (95 L/min), and it can withstand a maximum operating pressure of 5000 psi (350 bar). With minimal leakage rates at standard viscosity levels and robust construction specifications, including a locknut torque range of 80-90 lbf-in (9-10 Nm), this cartridge offers reliable performance in demanding hydraulic applications.