SUN HYDRAULICS
RPESYCV

***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 RPESYCV (Material Number: RPESYCV) is a pilot-operated, balanced-poppet relief cartridge valve designed to regulate pressure in hydraulic systems. This normally closed valve opens to the tank port when the inlet pressure reaches the set value, allowing for precise and smooth pressure regulation with minimal noise and low pressure rise versus flow. The internal modulation of the cartridge makes it resistant to cavitation-related issues such as noise and manifold erosion. It is capable of handling maximum pressure at port 2, making it suitable for cross-port relief circuits and load-holding applications. The valve's performance remains stable despite variations in oil temperature or contamination levels, thanks to features like a 150-micron stainless steel screen protecting the main stage orifice. This model incorporates Sun's floating style construction, reducing the risk of internal part binding due to installation torque or machining variations. It offers adjustable settings via W and Y controls, with options for special settings that define maximum limits. The RPESYCV supports a flow capacity of 25 gpm (95 L/min) and operates at a maximum pressure of 5000 psi (350 bar), with a typical response time of 7 ms. Installation requires specific torques for various components: valve hex size is 7/8 inch (22.2 mm), with installation torque between 30-35 lbf ft (41-47 Nm). The adjustment screw has an internal hex size of 5/32 inch (4 mm), while the locknut hex size is 9/16 inch (15 mm) requiring a torque of 80-90 lbf in (9-10 Nm). The valve weighs approximately .30 lb (.15 kg) and uses Viton seals as part of its cartridge seal kit number 990310006.