Categories: Uncategorized

Pump Basics: Affinity Laws

Law 1- Speed is directly proportional to Flow.

Law 1 means that as RPM is reduced, flow (GPM) is reduced in a linear relationship. For example, if RPM drops to 70% of the original, GPM drops to 70% of the original.

Law 2 – Head is proportional to Flow squared.

Law 2 means that as RPM is reduced, pressure (feet of head) is reduced by the square. For example, if RPM drops to 70% of the original, feet of head would drop by (70% x 70%) = 0.72 = 0.49 or 49% of the original.

Law 2 – Input power is proportional to Flow cubed.

Law 3 means that as RPM is reduced, power consumption (brake horsepower) is reduced by the cube. In the same example the power would drop to (0.7 x 0.7 x 0.7) = (0.7)3 = 0.343 or 34.3% of the original.

Recent Posts

  • Blog

Chemical Pumps Costing You? Choose The Right Materials To Save

In industries that handle chemicals, like water treatment and manufacturing, the pumps you use are…

7 days ago
  • Blog

Is Hidden Dirt Costing your Business Millions?

You know that in the industrial world, keeping equipment running smoothly is key to making…

7 days ago
  • Blog

Chemical Metering Pumps 101: Understanding Options, Applications, and Advantages

Chemical metering pumps are the unsung heroes of industry. From ensuring water safety at treatment…

3 weeks ago
  • Blog

Why Pump Audits are Essential for Industrial Operations

Energy consumption is one of the largest operational costs for industrial facilities, and pumps typically…

3 weeks ago
  • Uncategorized

Why Use Magnetic Drive Pumps in Industrial Applications?

In today's industrial landscape, efficiency and safety are paramount concerns for operations managers and engineers…

1 month ago
  • Uncategorized

Industrial Pumps in Ontario are Powering Key Industries

Ontario’s industries operate around the clock, relying on seamless processes to keep production lines moving…

2 months ago