SUN HYDRAULICS
RSHSCNV

***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 RSHSCNV (RSHSCNV) is a pilot-operated, balanced poppet sequence valve designed to supply a secondary circuit with flow once the inlet port 1 pressure surpasses the valve setting. This valve regulates pressure at port 1 relative to the drain port 3 and is insensitive to back pressure at port 2 up to the valve setting, making it a viable alternative to two-port relief valves when there is return line pressure. The RSHSCNV features interchangeable three-port sequence cartridges, which share flow paths and cavities for given frame sizes. It incorporates Sun's floating style construction, minimizing internal part binding due to excessive installation torque or machining variations. The main stage orifice is protected by a 150-micron stainless steel screen, and the valve can handle a maximum operating pressure of 5000 psi (350 bar). It supports applications such as load holding and cross-port relief circuits, where modulating occurs inside the cartridge, protecting against cavitation issues like noise and manifold erosion. The valve has a capacity of 60 gpm (240 L/min) with factory pressure settings established at 4 gpm (15 L/min). Its response time is typically around 10 ms with maximum valve leakage at reseat being 10 drops/min (0.7 cc/min). Installation specifications include a hex size of 1-1/4 in. (31.8 mm) and an installation torque range of 150-160 lbf ft (203-217 Nm). The adjustment screw has an internal hex size of 5/32 in. (4 mm), while the locknut hex size is 9/16 in. (15 mm) with a torque specification of 80-90 lbf in. (9-10 Nm).