SUN HYDRAULICS
RPESLWN

***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 RPESLWN (RPESLWN) is a pilot-operated, balanced poppet relief cartridge designed for precise pressure regulation in hydraulic systems. This valve remains normally closed and begins to open to the tank port when the inlet pressure reaches the set threshold, effectively throttling flow to maintain consistent pressure levels. It offers high accuracy, smooth operation, quiet performance, rapid response times, and minimal pressure rise relative to flow. The cartridge's internal modulation makes it resistant to cavitation-related issues such as noise and manifold erosion. The RPESLWN can handle maximum pressure at port 2, making it suitable for cross-port relief circuits. It is relatively unaffected by variations in oil temperature and contamination. The main stage orifice is protected by a 150-micron stainless steel screen, enhancing its durability and reliability. This valve is particularly well-suited for load-holding applications due to its design features. Back pressure on the tank port is directly additive to the valve setting at a 1:1 ratio. The W and Y controls allow for full-range adjustability unless a special setting is specified, which then becomes the maximum setting of the valve. The Sun floating style construction minimizes potential binding of internal parts caused by excessive installation torque or machining variations. This model fits into cavity T-10A with a series capacity of 25 gpm (95 L/min) and operates at a maximum pressure of 5000 psi (350 bar). It has a typical response time of 7 ms and minimal leakage rates at standard conditions. Installation requires specific torque settings for both the valve body and locknut, ensuring secure placement within hydraulic systems. The RPESLWN weighs approximately .30 lb (.15 kg) and uses Viton seals for reliable performance under various conditions.