What is a 90 Degree Elbow

90 Degree Elbow

A 90 degree elbow is also called a “90 bend” or “90 ell”. It is a fitting which is bent in such a way to produce 90 degree change in the direction of flow in the pipe. It used to change the direction in piping and is also sometimes called a “quarter bend”. A 90 degree elbow attaches readily to plastic, copper, cast iron, steel and lead. It can also attach to rubber with stainless steel clamps. It is available in many materials like silicone, rubber compounds, galvanized steel, etc. The main application of an elbow (90 degree) is to connect hoses to valves, water pressure pumps, and deck drains. These elbows can be made from tough nylon material or NPT thread.

Materials used:
Materials used in 90° elbow is as follows:

  • PVC
  • Rubber
  • Copper
  • Cast iron
  • Brass
  • Stainless steel
  • Bronze
  • Galvanized steel
  • Aluminum etc.

Types of 90° elbows:
90° elbows are manufactured as SR (Short Radius) elbows and LR (Long Radius) elbows:

SR (Short Radius) Elbows:

These elbows have a Center-to-Face dimension of 1.0 X diameter. They are typically used in tight areas where clearance is the main issue.

LR (Long Radius) Elbows:

These elbows have a Center-to-Face dimension of 1.5 X diameter. They are the most common type of elbow and used when space is available and flow is more critical.

Size and Dimension:
90° elbows are available in various sizes. To get the actual size, just take the measurements of A and B as shown in the figure.

Buyer’s guide

What should buyers look for bulk purchase of 90° elbows?
The buyers should always consider for maximum assurance of reliable performance, such as high pressure, impulse, vibration, vacuum and temperature. Some specifications to look for are:

  • Light weight, convenient to transport and handle
  • High strength
  • Less resistance
  • Corrosion resistance
  • No pipe furring
  • Sound insulation
  • Easy to install
  • Long lifespan
  • Low cost
  • Recyclable (optional)
  • Color
  • For water pipes, healthy and non-toxic, bacterial neutral, conforming to drinking water standards
  • Resistant to high temperatures (110°C)
  • Reliable installation
  • Good heat preservation
  • Excellent design which ensures suitability for both exposed and hidden installation etc.

Application of 90° elbows:
The main application area of a 90° elbow is to connect hoses to valves, water pressure pumps, and deck drains. 90° elbows help to make dust hose take that quick turn at the corner. These elbows can be used on instrumentation, process and control systems and equipment employed in chemical, petroleum, fluid power, electronic and pulp and paper plants.

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