All centrifugal pumps will fail if they are run dry. One of the most cost-effective ways to prevent this from happening is a simple, inexpensive POWER MONITOR.
How Does a Power Monitor Work?
A power monitor detects low electric power draw caused by loss of flow to the suction or discharge of the pump and immediately shuts the pump down before any serious damage can occur. Power monitors are also set to shut pumps down if they detect high power draw which can be caused by running the pump too far to the right of the best efficiency point or by metal-to-metal contact of some kind inside the pump.
Approximately 88% of industrial process centrifugal pumps in the USA use mechanical seals which have been in commercial use since the 1920s. The concept of sealless magnetic drive centrifugal pumps has been around since the 1940s. In the past 30 years increased market demand for sealless pumps have driven pump manufacturers to continue to develop and evolve sealless pump designs. There are two primary types of sealless pumps; magnetic drive and canned motor pumps. This article will focus on magnetic drive pumps.
What key points should you consider in deciding whether your application is best suited for a pump with a mechanical seal or a magnetic drive sealless pump?
Fluoropolymer linings or coatings for centrifugal pumps are a great solution for highly corrosive applications. However, simply selecting the right fluoropolymer coating is not enough to ensure that you will get a cost effective product that will perform maintenance-free for years.
The primary mechanism that reduces the life of fluoropolymer coated metal products (such as centrifugal pumps) is permeation. Permeation is the transfer of liquids or gases into and through the fluoropolymer lining. Continue reading
When selecting a fluoropolymer lined pump, it is not just about the material. The type of molding process utilized to line your pump makes a huge difference in the quality of the lining which can be critical to the success of a pump in your application.