***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 Hydraforce directly.***
The Hydraforce EP20-S35 (5287107) is a screw-in, cartridge-style, pilot-to-close hydraulic directional element designed for advanced fluid control in hydraulic systems. This valve operates as a spring-biased blocking valve, transitioning to allow full flow from port 1 to port 2 only when the pressure at port 1 surpasses the combined pressure at port 3 plus the bias spring pressure. It boasts a low-pressure drop and features an industry-common cavity which enhances its compatibility and functional flexibility across various applications. The EP20-S35 valve supports a maximum flow as indicated by its performance graph, with a robust pressure rating of up to 345 bar (5000 psi). It ensures minimal internal leakage of up to 197 ml/min at 345 bar. Designed for durability and performance, it offers corrosion protection with a 960-hour salt spray resistance per ASTM B117. The operational temperature ranges between -40 to +100°C with Buna N seals, -26 to +204°C with fluorocarbon seals, and -54 to +107°C with polyurethane seals. This model is suitable for use with mineral-based or synthetic hydraulic fluids that possess lubricating properties, accommodating fluid viscosities ranging from 7.4 to 420 cSt. It maintains optimal performance even in environments where contamination levels are as high as ISO 4406:2018/14. The unit weighs approximately 0.77 kg and can be installed in any orientation without restrictions into VC20S3 cavities using an installation torque of between 88 and 102 Nm. Additional accessories such as seal kits (SK20S3XMM) are available for this model, ensuring prolonged service life and reliability in various hydraulic applications without requiring specific housing configurations due to its versatile design.