Which appliance is used to connect hoses of differing diameters?

Which appliance is used to connect hoses of differing diameters?

• A. Elbow
• B. Adapter
• C. Coupler
• D. Reducer

Answer: (D)

When hoses have different diameters, you need a fitting that creates a smooth change in size. That’s what a reducer does: it steps the flow from the larger hose to the smaller one (or the other way around) so the connection stays secure and the flow remains usable. An elbow would bend the hose, not change its size. A coupler links hoses of the same diameter. An adapter can switch between different connection types or thread standards but isn’t the typical choice for directly changing hose diameter like a reducer does.

When hoses have different diameters, you need a fitting that creates a smooth change in size. That’s what a reducer does: it steps the flow from the larger hose to the smaller one (or the other way around) so the connection stays secure and the flow remains usable. An elbow would bend the hose, not change its size. A coupler links hoses of the same diameter. An adapter can switch between different connection types or thread standards but isn’t the typical choice for directly changing hose diameter like a reducer does.