SUN HYDRAULICS
RSHHBWV

***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 RSHHBWV (RSHHBWV) is a hydraulically controlled, pilot-operated, balanced piston relief cartridge designed to regulate pressure using an external pilot signal. This valve utilizes a hydraulic signal supplied through a port in the hex end of the cartridge, amplified at a ratio of 12:1, to control the pressure setting. It is a normally closed pressure regulating valve that opens to tank port 2 when the inlet port 1 pressure reaches the set level, throttling flow to maintain consistent pressure. The RSHHBWV is particularly suitable for applications requiring signal amplification from pilot controls like joysticks, offering accuracy with low pressure rise versus flow characteristics. It operates smoothly and quietly with moderate response speed. Key specifications include a maximum operating pressure of 5000 psi (350 bar), a typical response time of 10 ms, and maximum valve leakage at 110 SUS (24 cSt) being 4 in\u00b3/min at 1000 psi (65 cc/min at 70 bar). The valve features a main stage orifice protected by a 150-micron stainless steel screen and employs Sun's floating style construction to reduce binding risk due to installation torque or machining variations. The RSHHBWV has a cavity size of T-17A and can handle up to 60 gpm (240 L/min) capacity with a pilot ratio of 12:1. It is important to ensure that any pressure fluctuation at port 3 drain is managed appropriately as it will be amplified by the same factor. Moreover, pilot pressures should not exceed 600 psi (40 bar), and these valves are not recommended for crossport relief circuits due to their specific design characteristics.