In a coaxial hose for a balance system, where does the product flow through?

• A. The bellows
• B. The inner hose
• C. Ignition outer hose
• D. Both hoses

Answer: (B)

In a coaxial hose designed for a balance system, the product flows through the inner hose. This design utilizes the outer hose as a containment or venting mechanism, which helps manage vapors and prevents the escape of harmful substances into the atmosphere. The inner hose's primary function is to carry the product from one point to another, ensuring that the flow is efficiently and safely delivered.

The outer hose functions to accommodate vapor recovery, maintaining pressure balance and reducing emissions, but it does not transport the product itself. Therefore, understanding the specific roles of each component in a coaxial system is essential for effective operation and compliance with vapor recovery regulations.