Pipe Fittings - Elbow, Miterbends & Returns Part-1 /3 - YouTube

Welcome to Hardhat Engineer. I am Varun Patel. In this video, I am going to teach you about

pipe fittings. In part one I will teach you about elbow, reducing elbow, miter bend and

returns that is 180-degree bends.

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What is pipe fitting? In oil and gas piping, pipe Fittings are Piping component which helps

in Changes the direction of the flow such as elbows, tee. Changes the size of the pipe

such as reducers, reducing tees. Connect two components together such as couplings and

stop the flows such as Caps. Elbow:

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. 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 Ok now tell me which type of elbow you will

use if you want to transport fluids to long distances with minimum pressure loss? And

piping that have 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 constrain 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. 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.

Miter bend: Miter bends are not standard fittings they

are fabricated from pipes. High skill pipe fitter is required to fabricate this type

of bends and Usually they are preferred for size 10” & above because large size elbow

is expensive. Use of miter bend is restricted to water line. Miter bend can be fabricated

in 2, 3, & 5 pieces. Generally, fire water line, cooling water in old refinery & petrochemical

plant you can see the use miter bend. Nowadays use of miter bend is limited.

Returns/ bends: Retuning elbows or pipe bends are used to

make 180º direction change. These bends are also available in short & long pattern similar

to short radius and long radius elbow. Bends are mainly used in heating coil and heat exchanger.

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below. And don’t forget to check free piping component guide by visiting my website. See

you soon goodbye take care.