SUN HYDRAULICS
RPIEQNN

***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 RPIEQNN (RPIEQNN) is a fast-acting, pilot-operated, balanced piston relief cartridge designed to protect hydraulic components from pressure transients. This normally closed, pressure-limiting valve opens quickly when the inlet port pressure reaches the valve setting, diverting flow to the tank port to limit pressure rise. The valve's design ensures low pressure rise versus flow and rapid response times. It is physically and functionally interchangeable with other 2-port relief cartridges of the same frame size, making it versatile for various applications. The valve can accept maximum pressure at port 2 and is suitable for cross-port relief circuits; however, spool leakage should be considered in such configurations. The main stage orifice is safeguarded by a 150-micron stainless steel screen, but this product is not recommended for load-holding applications due to potential spool leakage. This cartridge features Sun's floating style construction to reduce internal part binding from excessive installation torque or machining variations. It has a capacity of 100 gpm (380 L/min) and operates at a maximum pressure of 5000 psi (350 bar). Typical response time is approximately 2 milliseconds. The valve exhibits minimal leakage at specified conditions and allows adjustment via an internal hex screw with detailed specifications on torque requirements provided. Weighing 1.20 lb (0.55 kg), it includes a Viton seal kit option for enhanced durability in various environments. This product exemplifies robust performance in applications requiring rapid pressure relief while maintaining operational integrity under high-pressure conditions.