Leak Repair Clamps
Leak Repair Clamps are extensively used for the quick, effective, and reliable repair of pipelines carrying oil, gas, water, steam, and various chemical fluids across both high- and low-temperature applications. To begin with, these clamps are designed as split assemblies, where two halves are securely bolted together to create a high-integrity pressure enclosure around the leaking or damaged section of the pipe.
Furthermore, sealing is achieved using high-quality elastomer seals, which are carefully selected based on compatibility with the pipeline fluid and operating temperature conditions. As a result, these seals ensure effective leak containment even under demanding operating environments.
In addition to providing reliable sealing, Leak Repair Clamps offer enhanced functionality and long-term performance benefits. For example, operators can weld the clamps after installation to create a permanent and pressure-tight repair solution. Moreover, in critical situations where immediate action is required, the clamps can be completely seal-welded while the pipeline remains operational.
Consequently, this minimizes downtime and operational interruptions while maintaining continuous process flow. Therefore, Leak Repair Clamps provide an efficient, safe, and durable solution for maintaining pipeline integrity in challenging industrial environments.
Features of Leak Repair Clamps
Leak Repair Clamps are fitted with high-grade elastomeric seals, typically manufactured using Buna-Nitrile or Viton materials. To begin with, the sealing load in these applications is achieved through bolt tensioning of the clamp studs, following a split sleeve design that ensures secure and effective sealing around the damaged area. In addition, all clamps are equipped with an external pressure test facility, allowing operators to verify joint integrity before commissioning and ensuring reliable performance from the outset. Furthermore, for improved operational flexibility, a twin seal configuration is also available, enabling inter-seal testing during installation for additional verification and safety.
Moreover, Leak Repair Clamps can be supplied for both topside and subsea repair applications, thereby providing versatility across a broad range of operating environments. Similarly, for more demanding applications, engineered solutions can incorporate metal graphite composite seals, which come standard in all Split Sleeve Clamp Mechanical Contractor products. Importantly, this graphite-based sealing technology provides excellent chemical resistance while also performing effectively under high-temperature and high-pressure conditions. Consequently, it ensures long-term reliability and durability without degradation, even when operating in harsh, corrosive, or aggressive environments.
Benefits of Leak Repair Clamps
Leak Repair Clamps are highly effective for repairing leaking pipes or addressing wall thinning issues in pipeline systems. To begin with, these clamps are designed to self-seal through the controlled bolting of clamp studs, ensuring quick and reliable leak containment. Typically, standard clamps are supplied with a single seal configuration; however, double seal arrangements are also available upon request for enhanced safety and testing requirements.
Furthermore, each clamp undergoes hydro testing at 1.5 times its design pressure, or alternatively, according to specific client requirements, thereby ensuring reliability before deployment. In addition, these clamps are widely used for both subsea and topside repair applications, making them suitable for diverse operating environments.
Moreover, wedge-shaped grooves are incorporated into the design to prevent seal slippage during installation, thereby improving sealing performance and operational reliability. Additionally, the clamp design complies with ASME VIII standards, ensuring adherence to recognized engineering practices. Finally, prep angles can also be incorporated whenever welding is required, thus providing greater flexibility for permanent repair solutions.
Material Specification
Pipe Sizes | 1″ & Above |
| Split Body Shell | SA / ASTM A 516 Gr. 70 ASTM A 106 GR A, B, C Seamless Pipe ASTM A516 Gr. 70 Steel Plate API 5L Gr B, X42, X46, X52, X56, X60, X65, X70 ASTM A36 ASTM A572 Gr42, Gr50, Gr55, Gr60, Gr65 ASTM A516 Gr55, Gr60, Gr65, Gr70 ASTM A537 Class 1, Class 2, Class 3 EN 10025 ASTM A216 WCC ASTM A352 LCC ASTM A216 WCB Any other as per client requirement. |
| Body Flange (Stiffner) | ASTM A350 LF2 / ASME || SA350 LF2 ASTM A105 / ASME || SA105 Any other as per client requirement. |
Stud & Nut | ASTM A 193 Gr. B7, with A194 Gr 2H or as per client requirement Nuts. ASTM A 194 Gr2.2H, 2HM, 4, 7, 7M, 8, 8M ASTM A307 Gr A, B, C ASTM A320 Gr L7, L43 ASTM A325 Gr Type 1, Type 2, Type 3 Any other as per client requirement. Coating: Yellow Epoxy Polyamide, Standard or Marine Epoxy Galvanized, PTFE, Xylan Coated or any other as per client requirement |
| Seals / Gaskets | NBR temperature range is from -20°C to +80°C Viton temperature range is from -20°C to +200°C Silicone, Kevlar, Hycar HNBR temperature range is from -20°C to +150°C Any other as per client requirement |
| Vent Plug | SA / ASTM A 105 |
| Lifting Plug | SA / ASTM A 516 Gr. 70 |
| Sacrifical Anode | Zinc Alloy Any other as per client requirement. |
| Hinges Assembly | SA / ASTM A516 Gr. 70 SA / ASTM A-325 ASTM A106 Gr A, B, C, Seamless Pipes ASTM A572 Gr42, Gr50, Gr55, Gr60, Gr65 ASTM A516 Gr55, Gr60, Gr65 ASTM A36 ASTM A537 Class 1, Class 2, Class 3 EN 10025 – S235, S275, S355, S540 ASTM A 193 Gr. B7, with A194 Gr 2H Nuts. ASTM A 194 Gr2.2H, 2HM, 4, 7, 7M, 8, 8M ASTM A307 Gr A, B, C ASTM A320 Gr L7, L43 ASTM A325 Gr Type 1,Type 2,Type 3 Any other as per client requirement. |
| Design Code | ASME SEC VIII DIV . 1 API 6H ANSI B31.3 ANSI B31.4 ANSI B31.8 |
| Design standards | API SPEC 6H, Specification on End Closures, Connectors and Swivels API SPEC 5L, Specification for Line Pipe ASME Pressure Vessel Code, Section VIII ASME/ANSI B18.2.1, Square and Hex Bolts and Screw Inch Series |
| Design Pressure | 300#, 400#, 600#, 900#, 1500#, 2500# Any other as per client requirement. |
| Hydrotest Pressure | 1.3 X Design Pressure 1.5 X Design Pressure Any other as per client requirement. |
Design Temperature | 0 to 212°F Any other as per client requirement. |
| Design Temperature | Yellow Epoxy Polyamide, Standard or Marine Epoxy, Galvanized, PTFE, Xylan Coated Any other as per client requirement. |
Applicable International Standards
The design, engineering, and supply of the fire tubes (two off) shall conform, wherever applicable and unless otherwise specified and agreed, to the appropriate API, ASTM, ANSI, ASME, or equivalent standards and codes. Furthermore, they shall comply with internationally accepted standards and industry practices. In addition, all standards and codes followed for the design shall be of the latest version or edition, thereby ensuring up-to-date compliance, reliability, and performance.
| API RP 1160 | Managing System Integrity of Hydrocarbon Liquid Pipelines |
| ASME B 31.4 | Pipeline Transportation System for Liquids |
| ASME Section IX | Specification for Welding and Brazing Qualifications |
| ASME Section V | Non Destructive Examination |
| ASME Section II Part C | Specification for Welding Rods, Electrodes and Filler Materials |
ASME Section VIII, Div 1 | Rules for Construction of Pressure vessels |
| ASTM E 94 | Standard guide for Radiographic examinations |
| ASTM E709 | Standard guide for Magnetic Particle examination |
| ASTM E1003 | Standard test method for Hydrostatic Leak testing |
Testing & Certifications
- Non-destructive testing (NDT)
- 100% magnetic particle inspection (MPI) for stiffener to shell weld (fillet)
- 100% ultrasonic testing of vent plug welds
- 100% MPI fo hinge welds
- Hydro Test as per ASME Secion VIII Div. 1 clause UG-99 Dimensional & Visual
- Hardness
- Load Testing of Hook & Hinge Painting Inspection
- Any other as per client requirement.
Weldable Split Sleeves
Additionally, all clamps can be fully prepared for welding after installation, and the welding procedure is available upon request. To further enhance safety, heat insulators placed parallel to the seals protect them from heat during the welding of the sleeves to the pipe. Moreover, clamps with longer lengths are available upon request, offering greater flexibility for varied pipeline repair needs.
Contact for Pipe repaire Leak.
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Half Pipe Sleeve, Half Repair Pipe Sleeve, Pre-Stressed Metallic Sleeve.