Pipe Repair Clamps
Reverse Repair Clamp for DI Pipe
For repair of tee, elbow socket joints on DI pipes, or where space is limited. DN100 to DN1000.
Inquire NowSpecifications
How to read the model number： H100FK = reverse-type socket repair for DN100 ductile iron pipe, designed for confined spaces.
| Model | DN | NPS | OD (mm) OD (in) | Length (mm) Length (in) |
|---|---|---|---|---|
| H100FK | DN100 | 4" | 118 mm 4.65" | 113 mm 4.4" |
| H150FK | DN150 | 6" | 170 mm 6.69" | 121 mm 4.8" |
| H200FK | DN200 | 8" | 222 mm 8.74" | 130 mm 5.1" |
| H250FK | DN250 | 10" | 274 mm 10.79" | 140 mm 5.5" |
| H300FK | DN300 | 12" | 326 mm 12.83" | 150 mm 5.9" |
| H400FK | DN400 | 16" | 429 mm 16.89" | 160 mm 6.3" |
| H500FK | DN500 | 20" | 532 mm 20.94" | 172 mm 6.8" |
| H600FK | DN600 | 24" | 635 mm 25.00" | 178 mm 7.0" |
| H700FK | DN700 | 28" | 738 mm 29.06" | 180 mm 7.1" |
| H800FK | DN800 | 32" | 842 mm 33.15" | 190 mm 7.5" |
| H1000FK | DN1000 | 40" | 1048 mm 41.26" | 200 mm 7.9" |
Frequently Asked Questions
What pipe types and sizes is the Reverse Repair Clamp for DI Pipe compatible with?
The Reverse Repair Clamp for DI Pipe fits DN100 to DN1000 pipelines and is engineered for ductile iron. It seals longitudinal cracks, pinholes, circumferential fractures, and joint leaks without cutting out the damaged pipe section.
What is the working pressure rating?
Rated for 1.0 MPa. Standard clamp bodies are tested to at least PN16 (1.6 MPa); higher-pressure variants are available on request for gas-distribution and industrial service.
Can this clamp be installed on a live, pressurized pipeline?
Yes. The Reverse Repair Clamp for DI Pipe is designed for installation on live pipelines under pressure, which means municipal water, gas, or process flow does not have to be interrupted. Our technical team provides pre-install checklists to ensure safe deployment.
What materials are used in the body and sealing gasket?
Construction — shell: Ductile iron QT450-10 · seal: EPDM. Corrosion-resistant stainless-steel banding (SUS304 / SUS316) with EPDM (potable water) or NBR (oil / hydrocarbon service) gaskets is available depending on the application.
What is the lead time and how is it shipped?
Standard lead time is 15 working days ex-factory, shipping FOB Shanghai. Sea, air, and combined transport are arranged through PipeKnot to over 40 countries. Volume orders and project tenders receive priority scheduling.
Is installation guidance and technical support included?
PipeKnot provides English-language installation drawings, torque specifications, and remote technical support. On-site commissioning support can be arranged for qualifying projects in partnership with Anhui Tongfa field engineers.
