Business

PyungHwa Industrial

Return Hose

It safely returns excess fuel from the engine's fuel injectors back to the fuel tank.
Engineered to ensure exceptional performance and durability, even under harsh conditions such as high temperatures, high pressure, and vibrations in the engine periphery.

Function
This is a fuel transfer hose for the engine periphery, designed to return excess fuel back to the fuel tank after injection from the engine-side injectors.
Structure
  • Inner Rubber + Reinforcement Yarn
  • Inner Rubber + Reinforcement Yarn + Outer Rubber
  • Inner Rubber + Middle Rubber + Reinforcement Yarn + Outer Rubber
Material
  • HNBR
  • FKM
  • ECO
  • AEM
Dimensions

Inner Diameter (I.D.): Φ3 – Φ9.5

Features
  • Excellent Heat and Oil Resistance

To withstand high temperatures and various fuel/oil components around the engine, special rubber materials such as HNBR (Hydrogenated Nitrile Butadiene Rubber), FKM (Fluoroelastomer), ECO (Epichlorohydrin Rubber), and AEM (Ethylene Acrylic Elastomer) are utilized.

 

  • Perfect Airtightness and Backflow Prevention

The system enhances fuel efficiency by maintaining a perfect seal and preventing fuel backflow. It ensures stable operation and prevents fuel leakage even within complex engine environments.

 

  • Vibration and Pressure-Resistant Structure

The hose features a reinforced yarn structure designed to endure constant engine vibrations and pressure fluctuations. This prevents deformation and damage, ensuring long-term stable performance.

PyungHwa Advantages
  • With proven technology built through decades of collaboration with OEM and FEM partners, we develop and mass-produce high-performance rubber hoses.
  • Based on global competitor benchmarking and our proprietary technology, our products effectively prevent fuel backflow and maintain exceptional heat resistance and airtightness, even in harsh environments characterized by engine vibrations and extreme temperature fluctuations.