How to Size a Pipe Manifold

Pipe manifolds are small lateral outlets to or from other pipes. They are used to collect or distribute gases or liquids from or to a central pipe. Pipe manifolds are extensively used in cars, solar panels, parallel plumbing and exhausts. They are made up of metal such as cast iron and copper or plastic, and are available in a variety of shapes and sizes. In fact, they can often be fabricated to order, depending upon the pressure and flow of the liquid or gas. You may also size a pipe manifold according to your needs.

Pipe sizing charts
Pipes and pipe manifolds
Measuring tape

Instructions

- 1
  Determine the configuration of the pipe manifold system to establish the points of connection between the main pipe and the lateral pipes. This may vary depending on the type of pipe and its purported use.
- 2
  Measure the lengths of the main pipe as well as the pipe manifold. The manifold length is measured from the main/manifold connection to the end of the pipe manifold.
- 3
  Determine the diameter of the main pipe or trunk, and the studs or the pipe manifolds. The main pipe and manifold may have the same diameter if you want to maintain the same pressure and rate of flow of the liquid. This may be seen in most waste water distribution plants. The diameter may, however, vary if you want to increase or decrease the rate of flow and pressure in the pipe manifold.
- 4
  Assemble the pipe system using the appropriate "L" and "T" joints. Ensure that the pipes are fixed properly.

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