SUN HYDRAULICS
RSHSLAN

***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 RSHSLAN (RSHSLAN) is a pilot-operated, balanced poppet sequence valve designed to supply a secondary circuit with flow once the pressure at inlet port 1 exceeds the valve setting. This sequence valve controls 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 can regulate pressure in place of two-port relief valves when there is pressure in the return line. All three-port sequence cartridges are interchangeable, maintaining the same flow path and cavity for a given frame size. As pressure at port 1 increases relative to port 3, pilot flow continues to rise above the valve setting. The main stage orifice is safeguarded by a 150-micron stainless steel screen, ensuring durability and reliability. The valve's design allows for direct addition of pressure at port 3 to the valve setting at a 1:1 ratio, with a maximum allowable limit of 5000 psi (350 bar). This makes it suitable for load-holding applications and cross-port relief circuits, as it can handle maximum pressure at port 2. The modulating action occurs within the cartridge, making these valves resistant to cavitation-related issues like noise and manifold erosion. The Sun floating style construction minimizes internal binding due to excessive installation torque or machining variations. Key specifications include a T-17A cavity, Series 3 capacity of up to 60 gpm (240 L/min), factory-set pressures established at 4 gpm (15 L/min), and a maximum operating pressure of up to 5000 psi (350 bar). It features an adjustment range with five clockwise turns for increasing settings and has specific torque requirements for installation and adjustment components. The model weighs approximately 1.50 lb (0.70 kg) and includes Viton seal compatibility with an optional seal kit available under part number 990217006.