SUN HYDRAULICS
RSJCKWN

***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 RSJCKWN (RSJCKWN) 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 controls the pressure at port 1 relative to the drain port 3 and remains unaffected by back pressure at port 2 up to the valve setting. It offers an alternative to 2-port relief valves for regulating pressure when there is return line pressure. The RSJCKWN features interchangeable three-port sequence cartridges, maintaining consistency in flow path and cavity size across similar frame sizes. As the inlet pressure increases relative to the drain, pilot flow also increases beyond the valve setting, with a main stage orifice shielded by a 150-micron stainless steel screen. The maximum allowable pressure at port 3 is directly additive to the valve setting at a 1:1 ratio, not exceeding 5000 psi (350 bar). This model is not recommended for load-holding applications due to spool leakage. The RSJCKWN incorporates Sun's floating style construction, minimizing internal binding risks from excessive installation torque or machining variations. It has a T-19A cavity and series 4 capacity of up to 120 gpm (480 L/min), with factory pressure settings established at 4 gpm (15 L/min). The maximum operating pressure is rated at 5000 psi (350 bar), with control pilot flow between 15\u201320 in\u00b3/min (0.25\u20130.33 L/min) and typical response time of about 10 ms. Maximum valve leakage reaches up to 5 in\u00b3/min (80 cc/min) under specific conditions, and adjustment involves up to five clockwise turns for increasing settings. Installation involves specific torque requirements for both the valve body and locknut, ensuring proper setup and operation.