SUN HYDRAULICS
RSJSLBN

***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 RSJSLBN (RSJSLBN) is a pilot-operated, balanced poppet sequence valve designed to supply a secondary circuit with flow once the inlet port pressure exceeds the valve setting. This valve is engineered to control pressure at port 1 relative to the drain port 3, remaining unaffected by back pressure at port 2 up to the valve setting. It can be utilized as a substitute for 2-port relief valves when there is pressure in the return line. All 3-port sequence cartridges are interchangeable, maintaining consistent flow paths and cavity sizes for a given frame size. The pilot flow increases as the inlet pressure at port 1 rises above the valve setting relative to port 3, with the main stage orifice protected by a 150-micron stainless steel screen. The maximum allowable pressure at port 3 should not exceed 5000 psi (350 bar), which directly adds to the valve setting at a ratio of 1:1. This model incorporates Sun's floating style construction, reducing potential binding of internal parts due to excessive installation torque or machining variations. It accepts maximum pressure at port 2 and is suitable for cross-port relief circuits. With a capacity of up to 120 gpm (480 L/min) and factory pressure settings established at 4 gpm (15 L/min), it operates effectively under a maximum operating pressure of 5000 psi (350 bar). The control pilot flow ranges from 15-20 in\u00b3/min (0.25-0.33 L/min), with typical response times around 2 ms and maximum valve leakage upon reseat limited to 10 drops/min (0.7 cc/min). Installation requires specific torque settings and adjustments, facilitated by internal hex sizes for secure fitting. The model weighs approximately 3.10 lb (1.40 kg) and comes with an optional Viton seal kit for enhanced durability and performance under varying conditions.