FLANGE REPAIR CLAMPS
Flange Repair clamps units are a permanent repair clamps for leaking flange gasket. The unit is installed without taking the line out of service.
Flange Repair Split+Sleeve can fully encompass a flange set, stopping the leak by sealing on the pipe beyond the flange welds. Our solution has the ability to cover a wide variety of flange types and classes for both onshore and offshore applications. It is safe, easy to install, and can be welded while the line is in service
Flange Repair Clamps - Stop leaks in flange gaskets
- Stops leaks in flange gaskets
- Flange Fit Repair Rings are designed for easy installation.
- No special surface preparation is required prior to installation.
- The product can be installed by your own personnel and can be used multiple times.
- Bolt leakage is stopped by the injection of a suitable sealant fluid via sufficient injection sockets.
- In case of a small gap between the line flanges, gaskets can be installed for temporarily sealing prior and during injection.
- Detailed design is done based on line temperature, design temperature and design pressure.
- In order to be able to quote the correct product, please download and complete the Flange Fit Data Sheet from our website and send it to us.
- Clamps are hydrotested as per ANSI class at 1.3 x operating pressure.
- No special flange surface preparation is required, no costly shutdowns for installation.
- Flange repair clamps can be installed by company maintenance personnel. There is no altering of existing flanges, other than cleaning the flange.
- On scheduled shutdown maintenance the flange repair clamp can be removed and the gasket replaced. The unit may put back in service or held in stores for future repair.
- Injection sockets are utilized to fully seal the compartment. In case of a small gap between the line flanges, gaskets can be installed for temporarily sealing prior too and during injection.
Advantages
- Clamp completely passivated after welding operations.
- Extremely lightweight, therefore easy to handle.
- Easy assembling with handgrip on stainless steel repair clamp
- No sharp edges or angles.
- Rubber lining (EPDM / NBR) is water and gas resistant.
- No loose parts that can be lost during assembly.
- No problem with non-round pipes. Clamp assumes form of pipe.
- Teflon coating on threads prevents nuts and bolts galling.
- Angle deflection up to 2º can be accommodated.
- Repairs pipe sections with gaps of up to 25 mm.
- Clamps available in all lengths and diameters.
- Also available with threaded branching ranging from ½” to 4”.
- Also with flange connections ranging from DN 50 till DN 500
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 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. |
Sealing Length | 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 & agreed, to appropriate API, ASTM, ANSI, ASME or equivalent standards / codes and also to internationally-accepted standards and practices. All Standards and Codes followed for the Design shall be of latest version/ edition.
API RP 1160 API 6H/ API 6X/ API 5L | Managing System Integrity of Hydrocarbon Liquid Pipelines |
ASME B31.3, ASME B31.4, ASME B31.8 | 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.
Contact for Pipe repaire Leak.
For more details on the products contact us.
Half Pipe Sleeve, Half Repair Pipe Sleeve, Pre-Stressed Metallic Sleeve.