Which type of hydraulic fitting allows for angular adjustments?

Elbow fittings are specifically designed to facilitate directional changes in hydraulic lines, allowing for angular adjustments between pipes or tubes. These fittings typically come in various angles, such as 45 degrees or 90 degrees, enabling the user to create a connected routing of fluid lines that can navigate around obstacles or change elevation. This flexibility is crucial in hydraulic systems, where space constraints or system design may require the lines to bend or change direction.

Other types of fittings, such as straight fittings, are intended to connect two sections of a hydraulic line in a linear manner without any angle, making them unsuitable for applications where a directional change is necessary. Tees are used primarily to branch a single line into two separate sections rather than to change the direction of flow itself. Adapters are generally used to connect different types of fittings or pipes that may have varying thread sizes or types but do not inherently provide any angular adjustment. Thus, elbow fittings stand out as the key components that allow for specific angular adjustments in hydraulic systems.