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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 …
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 …
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 …
Heat check occurs on hard faces in a mechanical seal and can cause seal failure. Heat check is not one of the most common forms of seal failure but it is important to recognize because it will tell you a lot about what is happening inside the seal. Heat check is very recognizable, it shows up as radial crack marks along the …
Mixer seals are critical for pharmaceutical, chemical, and food process plants. These are highly engineered seals designed to keep contaminants from entering the process fluid and keep the process fluid from reaching the environment. A leak in the process fluid or contamination can result in a batch of product being ruined, which can be extremely costly depending on the application. …
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 …
