Line Stopping (½”-24”)

Line Stopping is a proven method of temporarily isolating a live pipeline by inserting a specialised mechanical device, known as a line stop head, to safely stop flow and pressure within the system. This technique is similar to hot tapping, but with the added process of installing a completion plug, which allows the temporary valve used in the procedure to be safely removed once the operation is complete.

The procedure involves installing a fitting (mechanical or welded type), followed by a temporary valve and drilling machine. After a precise cut is made in the pipe, the drilling machine is removed and the line stop head is inserted, creating a secure isolation point. This enables maintenance, repairs, alterations, or emergency works to be carried out safely without draining the system or causing costly shutdowns. Once complete, the line stop head is retracted, the completion plug is set in place, and the system is restored to normal operation.

This safe and efficient isolation method is widely used across industries where downtime or product loss cannot be tolerated, such as gas, water, sewage, and oil pipelines. Line stopping prevents contamination, protects product integrity, and ensures critical services such as fire protection remain fully operational throughout the works.

Benefits of Line Stopping:

• Provides temporary isolation for maintenance, alterations, or emergency works
• Works effectively on gas, water, sewage, and oil pipelines
• Prevents product loss and contamination
• Maintains fire protection and other critical services
• Cost-effective alternative to system shutdowns

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