SUN HYDRAULICS
RPESCQN

***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 RPESCQN (Material Number: RPESCQN) is a pilot-operated, balanced poppet relief cartridge designed as a normally closed pressure regulating valve. This component is engineered to open and throttle flow to the tank port when the inlet pressure reaches the pre-set level, providing accurate and smooth pressure regulation with minimal noise and low pressure rise versus flow. It features a design that prevents common cavitation issues such as noise and manifold erosion, making it suitable for cross port relief circuits. The valve can handle maximum pressures at port 2, making it effective in load-holding applications. It is relatively insensitive to oil temperature changes and contamination, with a main stage orifice protected by a 150-micron stainless steel screen. The RPESCQN model incorporates Sun's floating style construction to minimize internal binding due to installation torque or machining variations. It supports back pressure on the tank port at a 1:1 ratio relative to the valve setting. The valve allows adjustment throughout its full range using W or Y controls if no special setting is specified; otherwise, it adjusts up to the specified maximum setting. Its specifications include a cavity T-10A series with a capacity of 25 gpm (95 L/min), maximum operating pressure of 5000 psi (350 bar), typical response time of 7 ms, and maximum valve leakage at 110 SUS of 10 drops/min (0.7 cc/min). The installation torque ranges between 30-35 lbf ft (41-47 Nm), with specific hex sizes for adjustments and locknut torque requirements. The model weighs approximately .30 lb (0.15 kg) and uses Viton seal kits for cartridge sealing.