Difference between elbow, reducing elbow and returns

Introduction of elbow:

The elbow is used more than any other pipe fittings. It provides flexibility to change the pipe direction. Elbow mainly available in two standard types 90° and 45°. However, you can manufacture elbow in any other degree or you can cut the standard elbow to any degree as required during the construction.

ASME B16.9 ASTM A403 WP304 Long Radius Elbows

Elbows are available in two radius types, Short radius (1D) and Long radius (1.5D).

A Long Radius elbow is having the radius equivalent to 1.5 times the Diameter of the pipe and a Short Radius elbow is having the radius equivalent to the Diameter of the pipe.

• Long Radius A=1.5D
• Short Radius A=1D

piping that has frequent directional changes? Well in both the case long radius elbow is used as pressure loss is much less in long radius than short radius elbow. Short radius elbow is used where space is real constrained and pressure loss is not a problem. When you use short radius elbow in piping you may require to installation larger pump or compressor to compensate pressure loss.

Introduction of reducing elbow:

The 90 reducing elbow is designed to change direction as well as reduce the length of flow within a piping system. The reducing elbow eliminates one fitting and reduces the welding by more than one-third. Can you tell me which fitting it elements? Yes, reducer and that is why it reduces 2 cirseam weld joint and reduce the welding by 1/3.  Also, the gradual reduction in diameter throughout the arc of the reducing elbow provides lower resistance to flow and reduces the effect of stream turbulence and potential internal erosion. These features prevent sizeable pressure drops in the line.

Carbon steel reducing elbows

Introduction of returns/ bends:

Retune elbows or pipe bends are used to make an 180º direction change. These bends are also available in short & long pattern similar to the short radius and long radius elbow. Bends are mainly used in heating coil and heat exchanger.Please subscribe to my channel to get regular updates on new video and also like and share my video with your friends. If you want to request a video, please write in the comment below. And don’t forget to check free piping component guide by visiting my website. See you soon goodbye take care.Email:sales@haihaogroup.com

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