What is the Role of Elbows in Pipe Fitting ?

ELBOWS ARE INDUSTRIAL FITTINGS THAT CHANGE THE DIRECTION OF PIPING.It is installed at the time of joining two pipes. Elbows are generally available with an angle of 22.5o, 45o and 90o. However, it Can be cut to any other degree.The ends may be machined for butt welding, threaded (usually female), or socketed. 

When the ends differ in size, it is known as a reducing (or reducer) elbow.Reducer elbow variations also exist for when the piping diameters being connected are different.

Elbows are categorized as follows :-
  • Long Radius (LR) Elbows
  • Short Radius (LR) Elbows
  • 90° Elbow
  • 45° Elbow

Long Radius (LR) Elbows :-

Elbows Here, the radius is 1.5 times the diameter of pipe. Long elbows are used in low-pressure gravity-fed systems and other applications where low turbulence and minimum deposition of entrained solids are of concern. 

They are available in acrylonitrile butadiene styrene (ABS plastic), polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), and copper, and are used in DWV systems, sewage, and central vacuum systems.

Short Radius (LR) Elbow :-

Elbows In this, the radius is 1.0 times the diameter of pipe. But a short-radius (SR) elbow has a radius equal to the pipe diameter. Short elbows, widely available, are typically used in pressurized systems, and in physically tight locations.

90° Elbow :-

This is used when the change in direction required is 90°. A 90º elbow, also known as a "90 bend", "90 ell" or "quarter bend", attaches readily to plastic, copper, cast iron, steel, and lead, and is attached to rubber with stainless-steel clamps. Other available materials include silicone, rubber compounds, galvanized steel, and nylon. It is primarily used to connect hoses to valves, water pumps and deck drains.

45° Elbow:-

This is used when the change in direction required is 45°.  A 45º elbow, also known as a "45 bend" or "45 ell", is commonly used in water-supply facilities, food, chemical and electronic industrial pipeline networks, air-conditioning pipelines, agriculture and garden production, and solar-energy facility piping.

Post a Comment