Pacific Flow Control recently completed two 10-inch single line freezes in Edmonton, Alberta. These projects highlight our expertise in innovative pipeline solutions and our commitment to providing reliable, efficient, and safe services to our clients.




What is Line Freezing?
Line Freezing, or Pipe Freezing, is an innovative and controlled method for isolating a piping system. Using liquid nitrogen, this technique freezes the fluid within a live pipe, creating a solid ice plug. This ice plug acts as a temporary barrier, allowing for safe and efficient completion of necessary work without requiring a full system shutdown.
How Does It Work?
Our advanced technology enables us to freeze piping systems of various compositions, ranging from small ¾-inch pipes to large 12-inch pipes. This method works with an extensive array of liquid products, making it a versatile solution for numerous industries and applications.
Once the line is frozen, our equipment can withstand extreme pressure, ensuring a secure and stable plug. After the required work is completed, only a minimal number of redundant fittings remain on the system, reducing waste and restoring operations seamlessly.



Common Applications of Line Freezing
Line freezing is frequently used in:
- Line Relocation: Allows for repositioning pipelines without system-wide disruptions.
- Replacement of Defective Valves: Facilitates valve replacement without draining the entire system.
- Dead Ending (Abandoning) Lines: Safely isolates sections of piping for decommissioning.
- Temporary Bypass: Maintains operations while repairs or modifications are made.
- Installation of Process Equipment: Provides isolation for integrating new components.
- Material Testing: Ensures safe isolation for thorough testing procedures.
- Leak Repairs: Minimizes downtime and product loss during repair processes.
Advantages and Cost Savings of Line Freezing
- Cost-Effective Solution: More economical than mechanical line stops for smaller diameter piping.
- Significant Time Savings: Eliminates the need for draining, bulk transfers, storage, and system refilling.
- Minimal Product Loss: Prevents fluid or product waste, ensuring operational efficiency.
- Compact Design: Enables access to tight spaces where traditional line-stopping equipment may not fit, avoiding costly dismantling of surrounding structures.
- Adaptable to Various Conditions: Effective on pipes that are out-of-round or have excessive buildup.
Locations We Serve
At Pacific Flow Control Ltd, we provide reliable water main line stop services to customers throughout British Columbia, Alberta, and Saskatchewan. Our experienced technicians are equipped with the latest tools and techniques to safely and efficiently stop the flow of water in your mainline, allowing for repairs or modifications to be made without disrupting the water supply to your property.
Why Choose Pacific Flow Control?
Line freezing is a reliable, efficient, and cost-effective solution for isolating piping systems. Whether you’re performing maintenance, replacing valves, or conducting testing, this method ensures minimal disruption and maximum efficiency.
Contact Pacific Flow Control today to learn more about how our line freezing services can support your next project!