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Flow Stopping

Line Stopping allows works to be undertaken on water mains without interruption to customer supply. Deploying a stopper and bypass system, the rig set-up allows for sections of pipelines to be made dry allowing safe repair or replacement of the existing network.

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Line Stopping and By Pass System

Line Stopping is a vital solution for maintenance and repair works on water mains, allowing for seamless operation without any disruption to the customer’s supply.

Our expert team uses the Sarco Stopper line stopping machine, which is approved for use on Water Corporation assets and has proven its effectiveness through extensive use in the Perth Metropolitan Region and other regional locations.
With this innovative solution, we can:

  • Eliminate the need for cut-ins, maintaining pipeline integrity and consumer supply
  • Avoid potential backflow and contamination
  • Ensure fire protection is never compromised
  • Eliminate the need for draining or water loss
  • Make immediate connections without the need for after-hours shutdowns
  • Avoid any discolouration of water supply or the need for re-chlorination

Hydrant Wizard System

Using the Hydrant Wizard System, the flow of water in the Main is not affected. A simple Golf Blade Saddle is fitted to the riser between the hydrant and the main, through which a small hole is drilled under pressure.

A mini Hydro bag is inserted and inflated to create isolation. Inflation is controlled by a pressurisation unit using the mains pressure through the Sniffer facilities within the Hydro bag. When inflated, the hydrant can be replaced and then the hydro bag can be removed leaving the blade saddle as a future access point when required.

We are dedicated to providing the best value and safest outcome for every project we undertake, and Line Stopping is an essential tool in achieving these goals.

Contact us today to learn more about our capabilities and how we can assist with your pipeline intervention needs.

Frequently Asked Questions

What is line stopping?

Line stopping is a process of isolating a specific section of a pipeline to perform maintenance or repairs without shutting down the entire pipeline system.

Why is line stopping important in pipeline maintenance?

Line stopping is important in pipeline maintenance because it provides a safer and more cost-effective way to perform maintenance without shutting down the entire pipeline system. The process saves money by avoiding the expenses associated with shutting down the pipeline and eliminates the dangers of working with a live system.

What are the smallest and largest pipe diameters that Saltire is capable of performing line stopping with by pass system on?

Saltire is capable of performing line stopping on pipes with a diameter range of DN75mm to DN220mm.

What is the process of line stopping operation?

The line stopping operation includes four steps: attaching a line stop fitting and a temporary valve to the pipe, tapping the pipe, positioning the flow-control equipment while the fluid is controlled, and removing the line-stop machine and attaching a completion plug under pressure. The system is not shut down during these processes, and flow can be controlled while isolating a small section for repair .

Our clients rely on us to innovate, deliver and excel.

Our team possesses a strong understanding of client requirements and we focus on building long term professional relationships and exceeding expectations within safety, quality, and environment. Being a Western Australian owned and operated company, Saltire supports local communities by prioritising partnerships with WA suppliers and Contractors.


Case Studies

Case Studies

Duncraig Sewer Pressure Main Extension

PROJECT OVERVIEW: Saltire were awarded the project by the Water Corporation to address the recent…
Case Studies

Reticulated Water Main on Albany Highway

PROJECT OVERVIEW: Saltire were engaged by Rob Carr Pty Ltd to assist in providing bypass…
Case Studies

Solving a Major Leak in Three Springs

PROJECT OVERVIEW: In June and July of 2022, a major leak was discovered in the…