對夾式消聲止回閥H71HThis silencing check valve H71 H公稱通徑 Nominal diameter: DN50~DN300公稱壓力 Nominal pressure: PN1.0~2.0MPa適用介質 Applicable medium:水、油、氣等 Water,oil,steam etc適用溫度 Applicable temperature: -45℃- 150℃