Repair and reinforcement joint Repair Sleeve type RS

A retrofit expansion joint installed using a no-shutdown construction method for seismic reinforcement and leak repair of existing joints.

This expansion joint is designed for seismic reinforcement and leak repair of existing joints using a no-shutdown construction method. It can be custom-manufactured to match the shape of the existing joint and the required allowable displacement.

Product Features

The joint consists of two split sections that are installed from above and below the existing joint, with the split sections connected by welding or bolts and nuts. Once installed, it can absorb expansion, contraction, misalignment, bending, and vibration.

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Applications

  • Reinforcement

    Improves the allowable displacement capacity (expansion and offset movement) of joints that have exceeded allowable displacement limits or are unable to withstand Level 2 earthquake motion.

  • Repair

    Provides repair for leaking joints.

Solving These Challenges

  • Challenges

    We want to reinforce joints that have exceeded allowable displacement limits or are experiencing significant displacement, but we are unsure how to address the issue.

    Solutions

    Improves the allowable displacement capacity of displaced joints.

  • Challenges

    We want to repair leaking joints, but we are unsure of the best solution.

    Solutions

    Enables leak repair without shutting down the water supply.

  • Challenges

    The joints are corroded and may leak in the future, but we are unsure how to address the problem.

    Solutions

    Provides preventive maintenance against future leakage and enables permanent-level repair performance equivalent to the main pipeline.

Repair Sleeve is a joint solution that enables leak repair of existing joints and improves the performance of joints that have exceeded allowable limits, all without shutting down the water supply.

Why Choose Our Solution

  1. 01.No service interruption required

    Installation is possible using a no-shutdown construction method. The system is installed while draining fluid through the drain plug included with the product.

  2. 02.Capable of absorbing three-dimensional displacement

    After installation, the system can absorb expansion, offset, and bending movements beyond the capacity of the existing joint (depending on surrounding conditions).

  3. 03.Can be installed on displaced joints

    The product is designed based on measurements of the existing joint, including outer diameter and overall length, as well as calculated displacement values.

  4. 04.Can also be installed on steel pipes and joints manufactured by other companies

    Because each unit is custom-manufactured to match the shape of the existing joint, installation is possible on steel pipes, ductile iron pipes, and joints manufactured by other companies (including bellows-type and ball-type joints).

Case Studies

  • Before

    Buried flexible joints that have exceeded allowable displacement limits

    After

    Improves the allowable displacement capacity of flexible joints, enabling them to accommodate future displacement caused by earthquakes and ground movement

    More

    Improves displacement capacity for joints that have exceeded allowable displacement limits

    Water authorities

    Installation Target Buried flexible joint / 2300A diameter
    Reason To prepare for future earthquakes and ground displacement, the customer wanted to improve the allowable displacement capacity of a flexible joint that had exceeded its allowable offset limit
Close

Improves displacement capacity for joints that have exceeded allowable displacement limits

Water authorities

Installation Target Buried flexible joint / 2300A diameter
Reason To prepare for future earthquakes and ground displacement, the customer wanted to improve the allowable displacement capacity of a flexible joint that had exceeded its allowable offset limit

Implementation Flow

  1. 01

    1day

    Investigation

    Investigation of displacement conditions in existing joints

  2. 02

    10-20days

    Product Design

    Design based on required displacement capacity and the shape of the existing joint

  3. 03

    80-100days

    Product Manufacturing

    Custom-manufactured for each installation site

  4. 04

    10-20days

    Product Installation

    Product installation under the guidance of our technical team

FAQ

  • qCan the system be installed on joints manufactured by other companies?

    a

    Installation is possible. Each unit is manufactured to match the dimensions of the existing joint.

  • qIs an on-site inspection required for product selection?

    a

    Yes. We measure the dimensions of the existing joint and propose an appropriate reinforcement solution. Please feel free to contact us for consultation.

  • qWe need to make emergency repairs in the event of a leak. Do you keep this product in stock?

    a

    As this is a custom-made product, it is not kept in stock. Delivery typically requires approximately 80 to 100 days.

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