SUN HYDRAULICS
RSHCYNN

***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 RSHCYNN (RSHCYNN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at inlet port 1 exceeds the valve setting. This sequence valve controls pressure at port 1 relative to the drain port 3 and is insensitive to back pressure at port 2 up to the valve's setting. It can regulate pressure instead of two-port relief valves if there is pressure in the return line. The RSHCYNN model features interchangeable three-port sequence cartridges with consistent flow paths and cavities for given frame sizes, enhancing its versatility in various applications. The pilot flow increases as inlet pressure at port 1 rises above the setting relative to drain port 3, with a main stage orifice protected by a 150-micron stainless steel screen. The valve's maximum operating pressure is 5000 psi (350 bar), and it is not suitable for load-holding applications due to spool leakage. It incorporates Sun's floating style construction, minimizing potential binding from installation torque or cavity machining variations. The valve has a capacity of 60 gpm (240 L/min) and factory pressure settings established at 4 gpm (15 L/min). Control pilot flow ranges from 15-20 in\u00b3/min (0.25-0.33 L/min) with a typical response time of 10 ms. Maximum leakage is specified as 4 in\u00b3/min (65 cc/min) at 110 SUS (24 cSt) under 1000 psi (70 bar). Adjustment involves up to five clockwise turns, with specific dimensions for installation torque and hex sizes provided for precise assembly and maintenance tasks.