HDPE Double Purge Ball Valve for Fuel Gas

Key Features

• Dual purge/test ports for system maintenance
• Full bore design minimizing pressure drop
• PE100 RC material for superior stress crack resistance
• ISO 4437 certified for fuel gas applications

Typical Applications

• Urban gas distribution networks
• LNG/CNG refueling station pipelines
• Industrial plant fuel gas supply lines
• Gas pressure regulation stations

Manufacturing Process

Injection-molded body with precision-machined metal components

• Seat concentricity tolerance ≤0.1mm
• Ball surface roughness Ra≤0.8μm
• Electrofusion end ovality ≤1.5%
• Pressure testing ≥1.5x working pressure

Raw Material Characteristics

• Density: 0.952g/cm³ (ISO 1183)
• MFR (190℃/5kg): 0.25g/10min
• Elastic modulus: 1100MPa
• S4 classification for slow crack growth resistance (ISO 13479)

• Sectional isolation in gas network maintenance
• Flow regulation at pressure station outlets
• Inert gas purging during new line commissioning
• Pressure testing for pipeline integrity verification