Understanding Corrosion in Water Pipelines: A Guide for Pipeline Designers



Last updated: August 31, 2017

What Does Self-Priming Mean?

Self-priming refers to the characteristics of corrosion prevention substances. The term “self-priming” is mostly known in the paints and pump industry. In paint, priming helps with better adhesion to the surface, enhances durability, and provides extra protection of the painted material. In self-priming pumps, no external methods/mechanisms are necessary to remove vapors from the system.

Self-priming provides durability through the corrosion protection of materials.


Corrosionpedia Explains Self-Priming

Self-priming is a characteristic of something that doesn’t require prior priming. A self-priming coating is a coating that doesn’t need the previous application of a primer; it seals the surface itself without using any primer. When material is not water-resistant and will be exposed to the elements, priming is compulsory. Self-priming paints are formulated to do the job of both the paint and primer, and can save time and money. Self-priming paint is used when:

  • Re-painting the same color
  • Painting a new, dry wall
  • Painting interiors

A self-priming pump refers to a centrifugal pump. It can use an air-water mixture to reach a condition similar to a fully-primed pump. A self-priming pump gives a solution to the air-binding problem. This pump works just like a standard centrifugal pump, gets rid of the air and only moves water.

A self-priming, corrosion-resistant paint can be made by mixing an alkyd resin binder and a combination of pigments in correct amounts. The pigments consist of an aluminum triphosphate, zinc salts of benzoic acids, and an alkaline earth metal phosphate.

Self-priming pumps can be used in sumps to remove waste liquid and circulate chemical liquid in all types of equipment. Corrosion-resistant pumps can efficiently cope with small or large flows, and semi or extremely corrosive substances.


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