SUN HYDRAULICS
RSHSLQV

***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 RSHSLQV (RSHSLQV) is a pilot-operated, balanced poppet sequence valve designed to supply a secondary circuit with flow once the inlet port 1 pressure exceeds the valve setting. This sequence valve precisely controls pressure at port 1 relative to the drain port 3, remaining unaffected by back pressure at port 2 up to the set valve limit. It can substitute for two-port relief valves when return line pressure is present and is suitable for load-holding applications. The design ensures immunity from cavitation-related issues like noise and manifold erosion due to internal modulating. The RSHSLQV accepts maximum pressure at port 2, making it ideal for cross-port relief circuits, and features Sun's floating style construction to prevent internal binding from excessive installation torque or machining variations. This cartridge is interchangeable with other three-port sequence cartridges of the same frame size, offering consistent flow paths and cavity compatibility. As inlet pressure at port 1 increases relative to drain port 3 beyond the set point, pilot flow rises accordingly. The main stage orifice is safeguarded by a robust 150-micron stainless steel screen, ensuring durability under high-pressure conditions up to a maximum of 5000 psi (350 bar). With a capacity of 60 gpm (240 L/min), this valve exhibits rapid response times typically around 10 ms and minimal leakage upon reseat measured at approximately 10 drops/min (0.7 cc/min). Installation specifications include a valve hex size of 1-1/4 in. (31.8 mm), requiring an installation torque between 150-160 lbf ft (203-217 Nm). The adjustment screw features an internal hex size of 5/32 in. (4 mm), with locknut hex size set at 9/16 in. (15 mm) and torque between 80-90 lbf in. (9-10 Nm). This model weighs approximately 1.50 lb (0.70 kg) and utilizes a Viton seal kit part number: 990217006 for optimal performance across various applications.