SUN HYDRAULICS
RSHCLWN

***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 RSHCLWN (RSHCLWN) 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. It effectively controls the pressure at port 1 relative to the drain port 3, remaining insensitive to back pressure at port 2 up to the valve's setting. This makes it suitable for regulating pressure in place of 2-port relief valves when there is return line pressure. The RSHCLWN model features interchangeable 3-port sequence cartridges with consistent flow paths and cavity sizes for a given frame. Pilot flow increases as the inlet pressure rises above the valve setting, and its main stage orifice is safeguarded by a 150-micron stainless steel screen. Pressure at port 3 adds directly to the valve setting at a 1:1 ratio, not exceeding 5000 psi (350 bar). However, it is not suitable for load holding applications due to spool leakage. The RSHCLWN incorporates Sun's floating style construction, minimizing internal part binding risks from excessive installation torque or machining variations. It fits into Cavity T-17A and Series 3 capacities, handling up to 60 gpm (240 L/min). Factory pressure settings are established at 4 gpm (15 L/min), with a maximum operating pressure of 5000 psi (350 bar). Control pilot flow ranges from 15-20 in\u00b3/min (0.25-0.33 L/min), with typical response times around 10 ms and maximum leakage of approximately 4 in\u00b3/min at specific conditions. The adjustable settings can be modified through clockwise turns of an adjustment screw with an internal hex size of 5/32 inch (4 mm), secured by a locknut requiring specific torque levels. The model weighs approximately 1.50 lb (0.70 kg) and uses Viton seal kits for optimal performance and durability.