HDPE Butt Fusion End Cap for Fuel Gas

Key Features

• PE100 RC material ensures resistance to slow crack growth
• Automated butt fusion enables permanent leak-tight sealing
• Complies with ISO 4437 hydrostatic pressure testing
• UV stabilizers for outdoor durability

Typical Applications

• Terminal sealing in municipal gas distribution networks
• Maintenance isolation in LPG transmission systems
• Pipeline termination at natural gas pressure regulating stations
• Isolation sections in industrial gas supply systems

Manufacturing Process

Automated injection molding

• Melt temperature control (±2°C tolerance)
• Holding pressure >80 MPa
• Cooling rate gradient management
• Wall thickness uniformity (<5% deviation)

Raw Material Characteristics

• Minimum Required Strength (MRS) 10 MPa (ISO 12162)
• Melt Flow Rate (MFR): 0.3–0.5 g/10min (190°C/5kg)
• Gas permeability resistance: <10 mg/m²/day (EN 1779)
• Rapid Crack Propagation (RCP) critical pressure >1.5 MPa (S4 test)

• Terminal sealing in new gas pipeline installations
• Temporary isolation during pipeline maintenance
• Downstream termination at district metering stations
• CNG fueling station storage line termination