What is the purpose of a 45-degree pipe elbow?

A 45-degree pipe elbow is specifically designed to allow pipes to make a 45-degree turn. This type of fitting is essential in various plumbing and piping systems where a change in direction is required without compromising the flow of materials or fluids within the pipes. By using a 45-degree elbow, the connection between two lengths of piping can be streamlined, helping to reduce turbulence and maintain efficient flow.

Other options include tasks that do not accurately describe the function of a 45-degree elbow; for instance, while joining pipes may be a general function of many types of fittings, a 45-degree elbow specifically matures this function by allowing a directional change. Similarly, extending pipe length or reducing pipe size pertains to different types of fittings, such as couplings or reducers, rather than the function of an elbow fitting.