Shaft Alignment

Pump arrangements, or most systems that include a motor, have two main components: the driver (motor) and the driven equipment (pump). The driving power of the motor is transmitted to the pump through the shaft. In some cases, the motor and pump are close-coupled but in other situations a coupling is preferred to accommodate a small degree of shaft misalignment …

API Plan 23

We have many customers that operate equipment in demanding services that need to cool a single mechanical seal. There are several options available. API 21 and 23 are the most popular and reliable. A seal chamber cooling jacket can also be used, especially with hot water, if it is available. If it is not, my preference – if cooling water …

Impeller Wrenches

One of the least favorite parts about repairing an ANSI pump is removing the impeller.  Impellers in this style of pump screw onto the shaft, and over years of service the impellers can get screwed on awfully tightly.  Unfortunately, there is no easy way to grab the impeller to remove it.  All sorts of tools are used, usually a big vice grip wrench …

Centrifugal Pump & Mechanical Seal Training

During my current 1 ½ year sales and service efforts in the Farmington, Four Corners area, I have re-confirmed the importance of proper understanding of the Centrifugal Pump and Mechanical Seals. Results of previous surveys from users in the Fluid Moving industries and from my current visits with customers, confirm the following; Seal Failures of the most common reason why …

How to Read a Centrifugal Pump Curve

At first glance, with no prior knowledge, a pump curve can be quite intimidating to decipher. There are an array of different curved lines, straight lines, values, and tables. Knowing what information to look for can simplify this task significantly. Below is a simple centrifugal pump curve though not all data sheets will have this arrangment. In this case, I …