SUN HYDRAULICS
RSFCCCN

***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 RSFCCCN (RSFCCCN) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the inlet port 1 pressure exceeds the valve setting. The pressure setting regulates port 1 pressure relative to drain port 3, and is insensitive to back pressure at port 2, up to the valve setting. These valves can regulate pressure in place of two-port relief valves if there is return line pressure. All three-port sequence cartridges are interchangeable regarding flow path and cavity size within a given frame size. As inlet pressure at port 1 rises above the valve setting relative to drain port 3, pilot flow increases. The main stage orifice is protected by a 150-micron stainless steel screen. Pressure at port 3 adds directly to the valve setting at a 1:1 ratio, not exceeding 5000 psi (350 bar). This model is unsuitable for load-holding applications due to spool leakage. W and Y controls allow full-range adjustability unless specified with a special setting, which represents the maximum valve setting. Cartridges with EPDM seals are compatible with phosphate ester fluids but are damaged by petroleum-based substances. It features Sun's floating-style construction to minimize internal binding risks due to installation torque or machining variations. Specifications include a T-2A cavity, series 2 capacity of 30 gpm (120 L/min), factory settings established at 4 gpm (15 L/min), maximum operating pressure of 5000 psi (350 bar), control pilot flow of 10-15 in\u00b3/min (0.16-0.25 L/min), typical response time of 10 ms, and maximum leakage of 3 in\u00b3/min at 110 SUS (24 cSt) under specified conditions. Adjustments involve up to five clockwise turns for increased settings, with specific torque requirements for installation and locknut adjustments provided for precision assembly and maintenance operations.