SUN HYDRAULICS
RSJCCDN

***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 RSJCCDN (RSJCCDN) 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 valve manages pressure at port 1 relative to the drain port 3, remaining unaffected by back pressure at port 2 up to its set threshold, making it an effective substitute for two-port relief valves in scenarios where return line pressure is present. Its three-port sequence cartridges are interchangeable regarding flow path and cavity size within a given frame. The pilot flow increases as the inlet pressure surpasses the valve setting compared to the drain pressure. The main stage orifice is shielded by a 150-micron stainless steel screen, ensuring durability. The maximum allowable pressure at port 3 is directly added to the valve setting at a 1:1 ratio but should not exceed 5000 psi (350 bar). Notably unsuitable for load-holding applications due to spool leakage, this valve offers adjustable settings through W and Y controls, with special settings indicating maximum adjustment levels. It incorporates Sun's floating style construction to reduce internal binding risks from excessive torque or machining variations. The RSJCCDN operates within a T-19A cavity and has a series-4 capacity of up to 120 gpm (480 L/min). Factory pressure settings are established at 4 gpm (15 L/min), with a maximum operating pressure of 5000 psi (350 bar). Control pilot flow ranges from 15 to 20 in\u00b3/min (0.25 to 0.33 L/min), with typical response times around 10 ms and maximum leakage rates under specified conditions reaching up to 5 in\u00b3/min (80 cc/min) at specific pressures. Installation requires precise torque specifications, and adjustments involve specific screw sizes for ease of use. The model weighs approximately 3.10 lb (1.40 kg) and uses Viton seal kits for reliability in various applications.