When working with U-type/ straight tube bundles in heat exchangers, understanding the difficulties of precipitation is important. Precipitation refers to accumulation of unwanted materials in the exchanger’s tubes which can lead to tube clogging. It has the potential to reduce efficiency significantly. While encountering with this issue, the Grippul can be used.

The Grippul/Attaching hydraulic stub puller is a specific device for pulling tubes. This device is particularly useful in re-tubing the U-type heat exchangers.

Steps for re-tubing by using Grippul:

1. Using a tube cutter to cut the end of the tube connected to the tube sheet.
2. Inserting the Grippul into the remaining tube. This attachment is secure to ensure the tube pulling out completely.
3. Throw the pulled tube away, and attach to another tube in order to complete the process.

 

By cutting the tube’s end and utilizing the Grippul device, the maintenance process becomes faster and easier.

 

Advantages of using the device:

• Increasing efficiency
• Ease of use
• Safety
• Robust construction
• Customizable