A valve designed to separate with little or no product in a motor-vehicle fueling hose is called what?

• A. breakaway
• B. hose clamp
• C. sheer valve
• D. flow limiter

Answer: (A)

The valve designed to separate with little or no product in a motor-vehicle fueling hose is called a breakaway valve. This type of valve is specifically engineered to disconnect when excessive force is applied, minimizing the risk of fuel leakage and contamination. When a vehicle accidentally drives away while still connected to the fuel dispenser, the breakaway valve allows for a clean separation, ensuring that the fueling system remains intact and prevents spillage of the product.

The design of the breakaway valve focuses on safety and environmental protection by containing the fuel within the system while avoiding any discharge into the environment. This is crucial in fuel dispensing operations, where hazardous materials are handled.

Other choices like the hose clamp, shear valve, and flow limiter serve different purposes in fuel dispensing systems. A hose clamp is used to secure hoses but does not have the specific operational function of disconnecting. A shear valve, while it also allows for separation, typically refers to a different mechanism that may not always prevent leakage in the same manner as a breakaway. Flow limiters are designed to restrict the flow of fuel under certain conditions but do not serve the purpose of separating the hose safely.