🧿1. Traditional Water Shutdown Repair Method

Drilling: This method is suitable for gray cast iron or cement pipes with socket-and-spigot joints. After shutting off the water supply, the original joint is chiseled out with fillers such as hemp fiber and cement, then replaced with new hemp fiber and hammered firmly. Finally, a sealant such as cement or epoxy resin is applied. This is a very old method, requiring high technical skills and being labor-intensive.
Replacing a Pipe Section: After locating the leak, the entire damaged section of pipe is cut and replaced with a new one, either by welding or flange connection. This method requires a complete water shutoff, requires a large excavation pit, is extremely time-consuming, and has a significant impact on the surrounding environment.

🧿Modern Non-Shutdown Repair Methods (Mainstream Trend)

• Using Pipe Repair Joints: This is currently the most common and efficient repair method.
  Welding: This method is suitable for steel pipes. Underwater welding or pressure welding is performed by professional welders, which is technically challenging and carries significant risks. Pipe clamps for localized leak repair: Small leaks can be sealed with special bolted pipe clamps, but these are typically used for temporary measures or small pipes.
• Relining repair: For pipes with severe internal corrosion, comprehensive repairs can be performed using techniques such as interleaved lining and CIPP curing-in-place (CIPP) curing. However, these are considered repairs, not emergency repairs.
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Advantages of using emergency repair clamps

For large pipe leaks, Baoshuo pipe repair clamps are the undisputed preferred solution, offering significant advantages:

1.No water outages or only brief outages, minimizing social impact.

Key Advantages: Traditional methods require prolonged outages, impacting residential, industrial, and firefighting water supplies over a large area. Emergency repair clamps typically require only a brief valve shutdown to reduce pressure (without completely draining the pipe), allowing installation while the leak is still present, ensuring continuous service. This is crucial for maintaining normal urban operations.

2.Fast installation and efficient repairs

Installing a large emergency repair clamp typically takes only 1-3 hours (including preparation time), while traditional pipe replacements can take 24 hours or even longer. This speed means shorter traffic blockages and rapid restoration of road traffic.

3.High Safety and Reliability
Modern emergency repair joints utilize high-strength materials (such as stainless steel sleeves and high-strength carbon steel) and patented sealing technologies (such as EPDM rubber and silicone rubber seals).
Their design pressures are typically far higher than the pipeline's operating pressure (for example, they can be designed for pipes weighing 10 kg, 16 kg, or even higher), withstand pressure fluctuations and water hammer, and provide a permanent repair solution.2.Adaptability and Wide Application
Versatile: A single emergency repair joint can accommodate pipes with varying outer diameters within a certain range and has a certain tolerance for pipe out-of-roundness.
Compatible with a variety of pipe materials: They can be used to repair pipes made of various materials, including ductile iron, steel, PVC, and cement.
Multiple Repair Types: They can repair not only leaks at joints but also longitudinal and transverse cracks in the pipe body and corrosion holes.
4.Small construction area and low overall cost
No large-scale excavation is required; only a working pit large enough to accommodate the emergency repair joint and operators is required, resulting in minimal earthwork. While the equipment cost of the emergency repair joint itself is relatively high, after factoring in water outage losses, labor costs, machine hours, road excavation, and restoration costs, the overall economic cost is significantly lower than traditional methods.

5.Easy Installation

Using a split-piece design and high-strength bolt connections, the installation process primarily involves cleaning the pipe wall, placing the sealing ring, closing the emergency repair joint, and symmetrically tightening the bolts. No special equipment is required, and trained personnel can operate it.

🧿Key Steps in Selecting and Installing a Large Pipeline Emergency Repair Joint

Selection: Select the appropriate emergency repair joint model and length based on the pipe diameter, operating pressure, and leak type (holes, cracks, or joint leaks).

Excavation and Preparation: Excavate the working pit and thoroughly clean and polish the pipe surface around the leak to remove all dirt, rust, and protrusions. This is crucial for ensuring a successful seal.

Installation:
Open the pipe repair clamp and place it over the leaking pipe.

Align the center of the emergency repair joint with the leak.

Pre-tighten the bolts manually, then use a torque wrench to tighten all bolts symmetrically, alternatingly, and in multiple stages until the specified torque is reached. This process ensures uniform pressure on the sealing ring, creating a perfect 360° seal.
Re-pressurization and Backfilling: After installation, slowly open the valve to restore pressure. Once no leaks are detected, backfill can be performed.

Summary

For large pipe leaks exceeding 1 meter in diameter, using the Baoshuo Pipe Repair Clamp is the optimal solution for modern emergency repairs. With its undeniable advantages of no water outage, high speed, safety, reliability, and overall low cost, it has replaced traditional large-scale excavation and pipe replacement methods and has become the standard for emergency repairs in municipal, water, and industrial sectors.