Temporary Line Stop Solutions for Large Diameter Pipes
Overview: What Is Line Stopping?
Line stopping is a temporary method used to isolate a section of a pressurized pipeline so that maintenance or modifications can be performed without requiring a full system shutdown. It is a critical technique for ensuring safety, minimizing downtime, and maintaining operational continuity—especially in large-scale infrastructure systems.
The Challenge of Large Diameter Line Stops
Large diameter pipelines present unique challenges due to:
- High internal pressures
- Limited access points
- Greater volume and flow rates
- Increased safety and regulatory requirements
These pipelines are vital to systems that require continuous service—such as water utilities, energy infrastructure, petrochemical plants, and marine operations—making fast, secure, and proven line stop solutions indispensable.
Petersen Products offers robust solutions specifically engineered to address the size, pressure demands, and complexity of large-diameter pipeline systems.
When Are Large Diameter Line Stops Required?
Temporary line stops are commonly needed during:
- Valve replacements
- Emergency repairs
- Hot tapping operations
- Pipeline upgrades or rerouting
- Preventative maintenance
These applications are often found in critical systems where shutting down the entire pipeline would be costly, impractical, or dangerous.
Proven Line Stop Solutions for Large Pipelines
Effective line stop systems for large-diameter pipes must accommodate a variety of pipe materials (e.g., steel, ductile iron, concrete, PVC) and be capable of withstanding high pressure and flow rates. Petersen Products offers the following field-proven solutions:
1. Inflatable Line Stop Plugs
- Ideal for irregular or oversized pipe interiors
- Lightweight, compact, and easy to transport
- Simple installation with minimal equipment
- Suitable for multiple pipe diameters and materials
- More economical than traditional mechanical methods
2. Folding-Head Mechanical Stoppers
- Designed for long-duration and high-pressure applications
- Rigid mechanical bracing ensures a secure fit
- Operates in both horizontal and vertical pipelines
- Preferred in high-risk or critical isolation environments
3. Double-Block and Bleed Configurations
- Dual isolation barriers with a central bleed zone for safety
- Compatible with both inflatable and mechanical systems
- Provides redundant protection in mission-critical applications
- Compliant with stringent ANSI/ASME safety requirements
Petersen Products’ Specialty: Inflatable Line Stops for Large Pipes
Petersen Products is a recognized leader in high-performance inflatable line stop systems, particularly for large-diameter applications. Our PeteStop® Inflatable Line Stop 129-Series is engineered to safely isolate flow in pressurized systems—without requiring full system shutdowns.
Key Advantages:
- Requires little or no excavation
- Minimizes pipeline modification
- Reduces service disruption and downtime
- Operates safely under high-pressure conditions
- Compatible with hot tap installations
These systems are available in a wide range of sizes and are tested to meet strict industry standards. Their durable construction and versatility make them ideal for use in large-scale, high-stakes operations.
Real-World Case Studies
Petersen Products’ large diameter line stop solutions have been successfully deployed in a variety of demanding environments:
Industrial Sewer Main Repair
A damaged sewer main near a heavily trafficked industrial zone was isolated using an inflatable plug, allowing safe repair without affecting surrounding infrastructure.
Power Plant Water Main Emergency
A large-diameter water main in a utility power station was successfully stopped using Petersen’s PeteStop technology, allowing for rapid emergency repairs with minimal operational impact.
Trust Petersen for Reliable Line Stop Solutions
Petersen Products’ line stop systems are engineered to meet rigorous industry standards. Every plug undergoes comprehensive pressure testing before shipment to ensure reliability.
We also offer:
- Custom-fabricated plugs for non-standard or oversized pipes
- Full engineering support for complex projects
- Fast shipping for emergency line stop deployments
Contact us today to learn more about our line stop solutions or request a custom quote by calling 262-692-3100 or send us an email at sales@PetersenProducts.com.
Disclaimer: The information may be used but with no warranty or liability. This information is believed to be correct but should always be double-checked with alternative sources. Strictly adhere to and follow all applicable national and local regulations and practices.
Regardless of these comments, it is always necessary to read and understand manufactures instructions and local regulations prior to using any item.
