🧿 Part 1: Guidelines for Working with Water in Leaking PE Electrofusion Pipe

Core Principles: The key to working with water is to "stop the water first, then drain it, and finally seal it." Ensure the work area is as dry as possible to ensure the quality of the electrofusion weld.

Operational Steps:

1. Safety First, Site Preparation
Disconnect Power and Ventilate: If there are any electrical equipment near the leak, first disconnect the power to prevent electric shock. When working in a tunnel or confined space, ensure good ventilation.

Site Survey: Assess the leak (hole or crack size, pressure), pipe specifications (outer diameter, wall thickness), and whether there is sufficient working space.

Equipment and Tools: Prepare appropriate leak repair clamps (leak repair clamps), specialized clamps, drainage tools, a generator (if needed), an electrofusion welder, cleaning tools (such as a scraper), and water diversion equipment (such as a pump).

2. Cleaning and Surface Preparation
Expanding the Working Area: If the pipeline is buried, excavate a working pit larger than the leak repair clamps to facilitate access. Pipe Cleaning: Thoroughly remove impurities such as mud, grease, and oxides from the pipe surface. This is a critical step to ensure the seal of the leak repair clamp and the quality of the electric fusion weld. A dedicated PE pipe scraping tool can be used to remove the surface oxide layer.
Drainage: This is the most critical step in wet work. Depending on the leak location, the following methods can be used:
For small holes/cracks: Initially seal the leak with temporary plugs such as wooden wedges or rubber plugs to reduce splashing.
Installing a Drain: Use a dedicated pressurized drainage device or pre-drill a hole and install a valve in the leak repair clamp to divert water to the side, creating a dry environment for the core work area.
Draining the Pit: Use a water pump to continuously remove accumulated water from the work pit to keep the pit bottom relatively dry.
3. Installation and Welding
Positioning: Accurately wrap the leak repair clamp around the pipe leak, ensuring that its center is aligned with the leak.
Tightening: Using the provided bolts and tools, tighten the bolts of the two halves of the leak repair clamp evenly and symmetrically, initially creating a mechanical seal. At this point, the drainage device should be able to effectively drain water. Welding: Connect an electric fusion welder to the fuse port on the leak repair clamp. Set welding parameters (voltage, time, etc.) strictly according to the leak repair clamp product manual and the welding machine operating procedures.
Key: Before welding, ensure the gap between the leak repair clamp and the pipe wall is as dry as possible. The drain device should remain in operation during welding.
4. Cooling and Inspection
Natural Cooling: After welding, allow the weld to cool naturally while tightened (usually for at least 30 minutes; refer to the product manual for the specific time). Do not move or apply external force during this period.
Pressure Test: After cooling, close the drain valve (if any), then slowly restore system pressure and observe the leak repair clamp for any leakage.
Backfilling: Backfill only after confirming that there are no leaks. During backfilling, avoid sharp rocks that could impact or damage the leak repair clamp and pipe.

🧿Part 2: Advantages of Using Leak Repair Clamps

Leak repair clamps are sleeve-type connectors designed specifically for quick pipe repairs. They offer unparalleled advantages for repairing PE electrofusion pipe leaks:

1. Works under pressure, no need to shut down the pipe:

Biggest advantage! Through its effective drainage and sealing design, leak repair clamps allow repairs to be performed without completely shutting down the pipe to reduce pressure, significantly minimizing the impact on downstream users and avoiding the economic losses and inconvenience caused by water outages.

2. Fast and efficient installation:

The installation process is relatively simple, eliminating the tedious steps of pipe cutting, grinding, and aligning pipes. From preparation to sealing, it can typically be completed in a few hours, making it ideal for emergency repairs.

3. Reliable and strong sealing:

Dual sealing mechanism:

Mechanical seal: A built-in high-quality rubber seal forms a secure primary seal under the tightening force of the bolts.

Welded seal: The leak repair clamp is electrofusion-fused to the pipe body, creating a permanent, high-strength secondary seal that lasts the life of the pipe. This dual-protection "mechanical + welding" approach is extremely reliable.
4. Strong Adaptability:
Leak repair clamps are available in standard specifications and are compatible with various PE pipe diameters.
They can repair not only point leaks but also circumferential or longitudinal cracks.
A variety of options are available, including double-wrapped leak repair clamps (which offer a larger wrapping area, higher pressure resistance, and greater resistance to axial stress), suitable for various working conditions.
5. Compact Structure and Minimized Excavation Area:
Compared to traditional methods that require flanges and couplers, leak repair clamps are smaller in size and require a smaller pit area, reducing the amount of excavation and backfilling work.

Baoshuo PE pipe elbow pipe repair clamp can choose stainless steel elbow pipe repair clamp and carbon steel elbow pipe repair clamp in two specifications. According to the internal medium of the pipeline, you can also choose oil-resistant, acid-resistant, alkali-resistant and other properties of the emergency repair clamp.

Summary:

Using leak repair clamps is currently the most mainstream, efficient, and reliable repair method for water-carrying leaks in PE electrofusion pipe. Its core advantages lie in "operation under pressure, rapid response, and double sealing," perfectly resolving the pain points of traditional repair methods, which require water outages and are time-consuming.

Important Note:

Operators must undergo professional training and be familiar with the electrofusion welding process and pressurized operation standards.

Always use leak repair clamps produced by a reputable manufacturer and designed to match the pipe material and specifications.

Strictly follow the product manual and welding procedure specifications, and ensure sufficient cooling time.