HDPE Electro Fusion Double Sealing Coupler for Water

Key Features

• Dual-seal structure provides redundant leak prevention
• Embedded heating elements ensure full-circumference uniform fusion
• Resistance to chemical corrosion and UV degradation
• Monolithic design with no moving parts minimizes failure risks

Typical Applications

• Municipal water supply network rehabilitation and connections
• Industrial cooling water circulation systems
• Mainline junctions in agricultural irrigation
• Water transmission pipelines in desalination plants

Manufacturing Process

Injection molding with automated heating element embedding

• Melt temperature control: 200-230°C
• Mold cooling rate gradient management
• Heating wire resistance tolerance ≤±2%
• Coupler bore concentricity precision control

Raw Material Characteristics

• Density: 0.950–0.965 g/cm³ (ISO 1183)
• Melt Flow Index: 0.3–0.5 g/10min (190°C/5kg, ISO 1133)
• Long-term hydrostatic strength: ≥10.0 MPa (20°C, 50 years, ISO 9080)
• Elastic modulus: ≥800 MPa (ISO 527)

• Trenchless rehabilitation of underground water networks
• Pressure main connections in water treatment plants
• Critical junctions in firefighting water systems
• Seismic-resistant connections in mountainous gravity-fed pipelines