The pressure range of gas transmission and distribution network, network type, valve arrangement, pipe diameter arrangement, etc.
燃气输配管网的压力级制、管网型式、阀门配置和管径配置等是管网结构因素。
With good sealing performance and as an important part in water-distribution and fire protection system, this type of valve has widely been used in city's water-supply system and sewerage.
它具有较高的密封性能，广泛用于城市给排水管路，是各种水分配系统和消防系统的重要部件。
With good sealing performance and as an important part in water-distribution and fire protection system, this type of valve has widely been used in city's water-supply system and sewerage.
它具有较高的密封性能，广泛用于城市给排水管路，是各种水分配系统和消防系统的重要部件。
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