SUN HYDRAULICS
RPESCAN

***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 RPESCAN (Material Number: RPESCAN) is a pilot-operated, balanced-poppet relief cartridge designed for pressure regulation in hydraulic systems. This normally closed valve opens to tank port 2 when the inlet port 1 pressure reaches the preset level, effectively throttling flow to maintain desired pressure levels. Known for its accuracy, smooth operation, and low noise, this valve is particularly effective in applications where cavitation could be an issue, as it minimizes associated noise and manifold erosion. The RPESCAN can handle maximum pressure at port 2, making it suitable for cross-port relief circuits and load-holding applications. It remains relatively unaffected by changes in oil temperature and contamination. The main stage orifice is protected by a 150-micron stainless steel screen, ensuring durability and reliability. Back pressure on tank port 2 directly affects the valve setting at a 1:1 ratio. The valve features adjustable W and Y controls that allow full-range adjustment unless a specific setting is specified as the maximum. With Sun's floating style construction, the design reduces the risk of internal part binding due to excessive torque or machining variations. This Series 1 valve fits into a T-10A cavity and has a capacity of up to 25 gpm (95 L/min). It operates up to a maximum pressure of 5000 psi (350 bar) with typical response times around 7 ms and minimal leakage at specified conditions. Installation requires specific torque values for both the valve hex size (7/8 in.) and locknut hex size (9/16 in.), ensuring secure fitting within hydraulic systems. The RPESCAN model weighs approximately .30 lb (.15 kg) and uses Viton seals for enhanced performance under various conditions.