SUN HYDRAULICS
RPESYBV

***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 RPESYBV (Material Number: RPESYBV) is a pilot-operated, balanced poppet relief cartridge designed for precise pressure regulation. These valves are normally closed and begin to open to tank port 2 when the pressure at inlet port 1 reaches the valve setting, effectively throttling flow to maintain desired pressure levels. Known for their accuracy, smooth operation, quiet performance, and rapid response time of approximately 7 milliseconds, these valves exhibit low pressure rise versus flow characteristics. Their design mitigates cavitation-related issues like noise and manifold erosion by modulating within the cartridge itself. The RPESYBV model can handle maximum pressure at port 2, making it suitable for cross-port relief circuits and load-holding applications. It remains relatively unaffected by varying oil temperatures and contamination thanks to its robust construction, which includes a main stage orifice protected by a 150-micron stainless steel screen. The floating style construction minimizes the risk of internal part binding due to excessive installation torque or machining variations. This valve features adjustable settings via W and Y controls, with options for special settings that represent the maximum valve setting. The back pressure on tank port 2 directly adds to the valve setting at a 1:1 ratio. With a capacity of up to 25 gpm (95 L/min) and maximum operating pressure of 5000 psi (350 bar), this cartridge is built for demanding applications. The model's hex size is 7/8 inch (22.2 mm), with an installation torque range of 30-35 lbf ft (41-47 Nm). Additionally, it incorporates an adjustment screw with an internal hex size of 5/32 inch (4 mm) and a locknut requiring a torque of 80-90 lbf in (9-10 Nm).