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倒流防止器HS41XBackflow preventer HS41X公稱通徑 Nominal diameter: DN40-DN600 公稱壓力 Nominal pressure: PN0.6~1.6MPa 適用介質 Applicable medium:水、油、氣等 Water,oil,steam etc 適用溫度 Applicable temperature: -10℃-350℃