SUN HYDRAULICS
RSHCCCN

***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 RSHCCCN (RSHCCCN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the inlet port pressure exceeds the valve setting. This valve effectively controls pressure at port 1 relative to the pressure at drain port 3. It remains insensitive to back pressure at port 2, up to the valve's set limit, and can regulate pressure in place of two-port relief valves if there is return line pressure. The RSHCCCN features interchangeable three-port sequence cartridges that maintain consistent flow paths and cavity compatibility within a given frame size. The pilot flow increases as the inlet pressure rises above the valve setting, with a stainless steel screen protecting the main stage orifice. Pressure at port 3 adds directly to the valve setting at a 1:1 ratio and should not exceed 5000 psi (350 bar). This model is unsuitable for load-holding applications due to spool leakage but offers adjustable settings with W or Y controls, which can be specified with or without a special maximum setting. It employs Sun's floating style construction to reduce internal binding risks due to installation torque or machining variations. The RSHCCCN fits into T-17A cavities and belongs to Series 3, offering a capacity of 60 gpm (240 L/min). Factory settings are established at 4 gpm (15 L/min), with maximum operating pressures of up to 5000 psi (350 bar). Control pilot flow ranges between 15-20 in\u00b3/min (0.25-0.33 L/min), with typical response times of about 10 ms and maximum leakage rates of 4 in\u00b3/min (65 cc/min) at specific conditions. Adjustments can be made using an internal hex screw, requiring specific torque values for installation and locknut adjustments. The model weighs approximately 1.50 lb (0.70 kg) and uses Viton seal kits for cartridge maintenance.