SUN HYDRAULICS
RSDCCBN

***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 RSDCCBN (RSDCCBN) is a pilot-operated, balanced piston sequence valve designed to efficiently supply a secondary circuit with flow once the inlet port pressure exceeds the set threshold. This valve excels at controlling pressure at port 1 relative to the pressure at drain port 3, remaining unaffected by back pressure at port 2 up to the valve setting. It can replace two-port relief valves for regulating pressure when there is return line pressure. With interchangeable three-port sequence cartridges, this valve ensures consistent flow paths and cavity compatibility across various frame sizes. As inlet pressure at port 1 rises above the set value relative to drain port 3, pilot flow increases accordingly. The main stage orifice benefits from a protective 150-micron stainless steel screen, ensuring durability and performance. Pressure at port 3 directly adds to the valve setting in a one-to-one ratio, with a maximum limit of 5000 psi (350 bar). Notably, this model is unsuitable for load-holding applications due to spool leakage. The RSDCCBN offers adjustable settings via W or Y controls unless specified otherwise. Corrosion resistance options include external stainless steel components or zinc-nickel plating, identified by model code suffixes AP or LH respectively. The Sun floating style construction minimizes internal part binding risks due to installation torque variations or machining discrepancies. This Series 1 cartridge fits cavity T-11A and handles capacities up to 15 gpm (60 L/min) with factory settings established at 4 gpm (15 L/min). It operates under maximum pressures of 5000 psi (350 bar), with control pilot flows between 7-10 in\u00b3/min (0.11-0.16 L/min). Typical response time is around 10 ms, and maximum leakage stands at approximately 2 in\u00b3/min under specific conditions. The adjustment mechanism involves five clockwise turns for increased settings, with precise installation torque requirements ensuring optimal performance and reliability in various applications.