What is the minimum hose length required for a connection if the maximum distance between end fittings is 50 inches?

The minimum hose length required for a connection where the maximum distance between end fittings is 50 inches should allow for both the fitting's dimensions and the curvature or bending of the hose. A hose must be longer than the straight-line distance to account for the fittings that connect to the hose, which typically take up some length and may also require some slack to function properly without being under tension or kinking.

In this case, a length of 52-1/2 inches provides enough margin to ensure that the connection is secure and that there is sufficient hose length to accommodate any potential flexing or movement between the two end fittings. Ensuring that there is excess length helps in installation and reduces stress on the connection, which is critical for safety and efficiency.

Additionally, lengths shorter than 52-1/2 inches would likely lead to situations where the hose could be stretched too tightly or even fail to connect properly, thus making the longer length the most appropriate choice for the requirements stated in the question.