SUN HYDRAULICS
RSHCQDV

***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 RSHCQDV (RSHCQDV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the inlet port 1 pressure exceeds the valve setting. These valves are ideal for applications requiring pressure regulation and are insensitive to back pressure at port 2 up to the valve setting, making them suitable alternatives to 2-port relief valves when there's pressure in the return line. The RSHCQDV model is interchangeable with all 3-port sequence cartridges of the same frame size, offering identical flow paths and cavities. It features a main stage orifice protected by a 150-micron stainless steel screen and is not recommended for load holding applications due to potential spool leakage. This valve operates with a maximum operating pressure of 5000 psi (350 bar) and has a capacity of 60 gpm (240 L/min). The factory pressure settings are established at 4 gpm (15 L/min), with control pilot flow ranging from 15-20 in\u00b3/min (0.25-0.33 L/min). The response time is typically around 10 ms, and maximum valve leakage at 110 SUS (24 cSt) is rated at 4 in\u00b3/min (65 cc/min) at 1000 psi (70 bar). The adjustment mechanism allows for an increase in setting through approximately five clockwise turns, and the design incorporates Sun's floating style construction to prevent internal binding due to installation torque or cavity machining variations. The installation requires a torque of 150-160 lbf ft (203-217 Nm), with specific dimensions provided for hex sizes needed during assembly. This model weighs approximately 1.50 lb (0.70 kg) and uses Viton seals available under seal kit cartridge number: 990017006.