HDPE Standard Purge Ball Valve for Fuel Gas

Key Features

• Full-bore design minimizes pressure drop
• Corrosion-resistant PE100 RC material for 50-year service life
• Low-torque operation with zero-leakage sealing
• Purge interface compatible with pressurized operations

Typical Applications

• City gas pipeline purge systems
• LPG (Liquefied Petroleum Gas) transfer stations
• Industrial fuel gas distribution networks
• CNG (Compressed Natural Gas) pressure regulation facilities

Manufacturing Process

Computer-controlled injection molding with precision ball machining

• Melt temperature control: 200°C ± 5°C
• Mold cooling gradient ≤ 15°C/min
• Ball sphericity tolerance ≤ 0.05 mm
• Sealing surface roughness Ra ≤ 1.6 μm

Raw Material Characteristics

• Density: 950 kg/m³ (ISO 1183)
• Minimum Required Strength (MRS): 10 MPa (ISO 12162)
• Resistance to Slow Crack Growth > 500h (ISO 13479)
• Melt Flow Rate: 0.25 g/10min (190°C/5kg)

• Gas main pipeline maintenance isolation purge
• Refueling station tank safety relief systems
• Underground gas pipeline emergency shutdown
• Industrial furnace fuel gas branch control