Pipe Repair Coupling technical overview.
Pipe Repair Coupling from JINYI is presented in the DN100 · two-piece repair coupling configuration. Use the dimension schedule, connection details and inspection requirements below when comparing this product with your pipework or equipment drawing.
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What is a pipe repair coupling?
A pipe repair coupling encloses a specified pipe area with a bolted shell and sealing liner. The correct design depends on the pipe outside diameter, material, damage condition and service.
Key dimensions and installation fit
Measure the carrier-pipe outside diameter at the repair location and identify the damaged length, available straight pipe and surrounding clearance. The coupling housing must suit the pipe surface and joint arrangement. Nominal DN alone does not establish the fit because pipes with the same nominal label can use different actual diameters. If the repair is close to a flanged interface, review the grooved flange adapter separately; its connection function differs from enclosing a damaged pipe area.
How to specify the pipe repair coupling
Select the stainless-steel housing and gasket compound for the pipe material, fluid and temperature. Establish whether the installation needs restraint against axial forces or only a sealing repair. Pressure options belong to separate configurations; do not assume every gasket, diameter or damaged-pipe condition is suitable for the highest listed option.
Technical data for the pipe repair coupling
| Nominal size | DN100 |
|---|---|
| Pipe outside diameter | 114.3 mm |
| Pressure options | 1.0 / 1.6 / 2.5 MPa |
| Housing arrangement | 2-piece |
| Body material options | SS304 / SS316L |
| Seal options | EPDM / NBR |
Sizes and dimensional requirements
The dimensional schedule identifies the illustrated configuration. Compare each value with the mating pipe, equipment or support drawing. A nominal designation does not replace the actual connection diameter, installation envelope or mounting detail. The choices above let you include a different configuration with your quotation request.
Dimensions and tolerance schedule
| Machined length >30–120 mm | ±0.3 mm |
|---|---|
| Machined length >120–400 mm | ±0.5 mm |
Inspection, standards and documentation
Clean and inspect the sealing region, confirm the pipe condition and follow the selected installation procedure. State any coating damage, corrosion or ovality that may affect contact with the gasket. Agree the inspection and leak-test requirements before placing the order.
State the required product standard and edition, material records and inspection acceptance criteria before ordering. Where pressure, temperature, movement or load are relevant, provide the operating and test conditions together. Document requirements should identify the actual component and drawing revision; a general certificate does not replace a dimensional or material record for the ordered item. Review connector and flexible-joint manufacturing when defining the production and acceptance scope.
Where the pipe repair coupling is used
- Pipe maintenance. Compare the damaged region and surrounding straight pipe with the coupling envelope.
- Service continuity planning. State the medium, pipe condition, required restraint and installation procedure in the repair scope.
- Replacement assemblies. Provide the actual pipe diameter and available clearance to establish the fit.
How to order a pipe repair coupling
Select the required options and send the quantity, destination, material and controlled drawing to JINYI. Include changed dimensions, mating details, finish, marking and packing requirements. The quotation defines the final configuration, inspection scope and delivery terms so the component can be checked against the intended installation.
Quantity prices and order preparation
| 10–49 pcs | US$4.48 per piece |
|---|---|
| 50–199 pcs | US$4.26 per piece |
| 200 pcs and above | US$4.03 per piece |
Freight and taxes are quoted separately. A different material, size or drawing can change the price and delivery requirements. Confirm the agreed specification before manufacture, and keep the drawing revision, selected options and ordered quantity together in the enquiry.
Other JINYI products worth comparing
Compare grooved pipe coupling, grooved 90 degree elbow, or review the pipe connectors and couplings catalog for other connection and configuration choices.
Request a custom pipe repair coupling quotation from JINYI with the drawing and quantity required for your project.
Pipe Repair Coupling selection and quotation checklist
The split repair arrangement differs from a grooved coupling. Describe the pipe material, measured outside diameter and repair location, including the condition of the sealing surface. Use the photographed product form to identify the arrangement, then use the controlled drawing to define what will be supplied. Similar-looking components can have different end details, load paths or maintenance requirements.
Pipe Repair Coupling dimensions and tolerances
The first comparison for this pipe repair coupling is diameter range and seal selection. Mark the dimensions that control mating, alignment and installation space on the enquiry drawing. Give units for every value and identify the datum from which it is measured. If a dimension is critical, specify its individual tolerance and measurement method rather than relying on a general tolerance note.
The current schedule identifies nominal size: DN100; pipe outside diameter: 114.3 mm; pressure options: 1.0 / 1.6 / 2.5 MPa. Read these entries together with the configuration and tolerance tables above. Reference or example values describe the displayed arrangement; the approved JINYI quotation and drawing define the ordered component. A different interface, material or service condition needs a fresh comparison.
Prepare the material and interface information
For a pipe repair coupling enquiry, identify the required material designation and supplied condition. Describe the mating components, attachment method and environment. Include the operating temperature and any relevant pressure, movement or structural load. These inputs should describe the actual installation, including changes between normal operation, start-up and maintenance where applicable.
Specify coatings, surface finish and marking separately from the base material. If traceability is needed, identify the record required and how it must correspond to the delivered component. Agree whether inspection covers dimensions, material documentation, welds or functional testing; these are different checks with different acceptance criteria.
Custom pipe repair coupling quotation
Attach the latest drawing revision, required quantity and delivery destination when contacting JINYI. Highlight departures from the illustrated arrangement, including changed dimensions, connections, finish and packing. For repeat orders, reference the approved configuration and list changes explicitly so an earlier drawing is not assumed to remain current.
The three price tiers above organise the displayed quantity bands. Compare quotes using the same drawing, material, inspection scope and unit of supply. A piece, a segment and a complete assembly are different units where applicable. Confirm freight, taxes, documentation and delivery terms with the final quotation instead of inferring them from the displayed unit price.
Compare related component arrangements
Evaluate this repair coupling by its actual diameter range and seal selection and the required pipe coupling arrangement. The photographs below show separate JINYI products for comparison. They are linked to their own technical pages and are not additional gallery views of this pipe repair coupling.
| Photo | Related product | Selection detail |
|---|---|---|
 | Grooved Pipe Coupling | Groove profile and pipe diameter. Compare this separate product when the drawing requires its particular arrangement. |
 | Rigid Wall Sleeve | Wall thickness and carrier-pipe clearance. Compare this separate product when the drawing requires its particular arrangement. |
 | Flexible Waterproof Sleeve | Gland dimensions and sealing clearance. Compare this separate product when the drawing requires its particular arrangement. |
Questions to resolve before ordering
Which dimensions need checking first?
Start with diameter range and seal selection and the mating or mounting detail. Check nominal designations against measured dimensions, then review the installation envelope. Photographs help identify the form; the drawing provides the dimensional basis for acceptance.
What should the quotation include?
A pipe repair coupling quotation should identify the configuration, drawing revision, material, quantity, price basis and agreed inspection records. Keep these details together with the approved order so receiving inspection can compare the delivered product with the specified component.
Independent terminology reference
Victaulic grooved fitting product families provides an independent reference for component terminology. Use the specified standard and edition where required by the project. This link does not establish JINYI certification, product approval or interchangeability with another manufacturer.
- DN100
- Nominal size
- 114.3 mm
- Pipe outside diameter
- ±0.3 mm
- Tolerance
- 3
- Quantity tiers
- Measure the pipe — Actual outside diameter controls selection.
- Define the defect — Record damage length, width and pipe surface condition.
- Separate sealing and restraint — A sealing repair and an axial-restraint function require different checks.
At a glance
- Product
- Pipe Repair Coupling
- Configuration
- DN100 · two-piece repair coupling
- Nominal size
- DN100
- Pipe outside diameter
- 114.3 mm
- Pressure options
- 1.0 / 1.6 / 2.5 MPa
Dimensions and technical specification
| Parameter | Specification |
|---|---|
| Nominal size | DN100 |
| Pipe outside diameter | 114.3 mm |
| Pressure options | 1.0 / 1.6 / 2.5 MPa |
| Housing arrangement | 2-piece |
| Body material options | SS304 / SS316L |
| Seal options | EPDM / NBR |
