SUN HYDRAULICS
RSHCKNV

***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 RSHCKNV (RSHCKNV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the inlet port pressure exceeds the valve setting. This valve effectively controls 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 substitute for two-port relief valves when there is return line pressure. The RSHCKNV model features interchangeable three-port sequence cartridges with consistent flow paths and cavities across similar frame sizes. As inlet pressure rises above the setting, pilot flow increases, while a 150-micron stainless steel screen protects the main stage orifice. The valve's setting at port 3 directly adds to its overall setting at a 1:1 ratio, with a maximum of 5000 psi (350 bar). This model is not recommended for load holding due to spool leakage but offers adjustable settings via W and Y controls, either throughout its range or up to a specified maximum. It employs Sun's floating style construction to prevent internal binding from installation torque or machining variations. The RSHCKNV has a T-17A cavity and Series 3 capacity of up to 60 gpm (240 L/min), with factory settings established at 4 gpm (15 L/min). It operates under pressures up to 5000 psi (350 bar) and allows control pilot flow between 15-20 in\u00b3/min (0.25-0.33 L/min), with typical response times around 10 ms. Maximum leakage is rated at four in\u00b3/min at 1000 psi (65 cc/min at 70 bar). The adjustment mechanism requires approximately five clockwise turns for increased settings, featuring specific hex sizes for adjustments and locknuts, along with defined installation torque specifications. The model weighs approximately 1.50 lb (0.70 kg) and includes Viton seal kits as standard components.