SUN HYDRAULICS
RSHCYEV

***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 RSHCYEV (RSHCYEV) is a pilot-operated, balanced piston sequence valve designed to supply a secondary circuit with flow once the pressure at inlet port 1 exceeds the valve setting. This component controls the pressure at port 1 in relation to the drain port 3 and remains unaffected by back pressure at port 2 up to the valve setting. It can substitute for two-port relief valves when there\u2019s pressure in the return line, making it versatile for various hydraulic applications. Notably, all three-port sequence cartridges are interchangeable, sharing the same flow path and cavity for equivalent frame sizes. As pressure at port 1 increases relative to port 3, pilot flow continues to rise above the valve setting. The main stage orifice is safeguarded by a robust 150-micron stainless steel screen. Pressure at port 3 directly adds to the valve setting at a 1:1 ratio but should not surpass 5000 psi (350 bar). This model is unsuitable for load-holding applications due to spool leakage. The RSHCYEV incorporates Sun's floating style construction, minimizing internal part binding risks from excessive installation torque or machining variations. This sequence valve features a T-17A cavity and Series 3 capacity of up to 60 gpm (240 L/min), with factory pressure settings established at 4 gpm (15 L/min). It operates under a maximum pressure of 5000 psi (350 bar) and has an adjustment range that can be fine-tuned using W or Y controls. The maximum allowable leakage is specified as four in\u00b3/minute at a pressure of 1000 psi (65 cc/minute at 70 bar). The unit weighs approximately 1.50 lbs (0.70 kg) and includes a Viton seal kit for cartridge maintenance.