SUN HYDRAULICS
RSHCYEN

***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 RSHCYEN (RSHCYEN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at inlet port 1 surpasses the valve setting. This valve effectively controls the pressure at port 1 relative to the drain port 3, remaining insensitive to back pressure at port 2 up to the set valve threshold. It can also regulate pressure in place of two-port relief valves when there is return line pressure. Notably, all three-port sequence cartridges are interchangeable in terms of flow path and cavity size for a given frame size. The pilot flow increases as the inlet pressure at port 1 rises above the valve setting relative to port 3, with the main stage orifice protected by a 150-micron stainless steel screen. The design incorporates Sun's floating style construction to reduce internal part binding from excessive installation torque or cavity machining variations. It has a maximum operating pressure of 5000 psi (350 bar) and supports capacities up to 60 gpm (240 L/min). The response time is typically around 10 ms, with maximum valve leakage at specified conditions being approximately 4 in\u00b3/min (65 cc/min). Adjustments can be made using W or Y controls across its full range unless a special setting is specified, which denotes the maximum setting. This model includes specific torque requirements for installation and adjustment components, such as a valve hex size of 1-1/4 inches and locknut torque between 80-90 lbf\u00b7in (9-10 Nm). Weighing about 1.50 lb (0.70 kg), it uses Viton seal kits for optimal performance in hydraulic systems where precise sequencing and pressure regulation are critical but not suitable for load-holding applications due to spool leakage.