SUN HYDRAULICS
RSDSKQV

***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 RSDSKQV (RSDSKQV) is a pilot-operated, balanced poppet sequence valve designed to manage secondary circuit flow once the pressure at inlet port 1 surpasses the valve's set threshold. This sequence valve effectively controls the pressure at port 1 relative to the drain port 3, remaining unaffected by back pressure at port 2 up to its set limit. It can be utilized as a substitute for two-port relief valves when there is return line pressure. All three-port sequence cartridges are interchangeable in terms of flow path and cavity size for a given frame size. As the inlet pressure at port 1 increases beyond the setting compared to port 3, pilot flow continues to rise. The main stage orifice is shielded by a 150-micron stainless steel screen, ensuring durability and reliability. This valve is particularly suitable for load-holding applications and is engineered to minimize issues associated with cavitation, such as noise and manifold erosion. It can handle maximum pressure at port 2 and is appropriate for cross-port relief circuits. The Sun floating style construction reduces internal part binding risks due to excessive installation torque or machining variations in cavity/cartridge interfaces. The RSDSKQV model features a T-11A cavity, Series 1 capacity of up to 15 gpm (60 L/min), and operates under a maximum pressure of 5000 psi (350 bar). With a typical response time of 10 ms, it ensures efficient performance with maximum valve leakage at reseat limited to 10 drops/min (0.7 cc/min). Adjustments are made with five clockwise turns for increased settings, while installation requires specific torque values: valve hex size of 7/8 inch (22.2 mm) with an installation torque of 30-35 lbf ft (41-47 Nm), and locknut hex size of 9/16 inch (15 mm) with torque between 80-90 lbf in (9-10 Nm). The model weighs .30 lb (.15 kg) and uses Viton seal kits for optimal sealing performance.