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01B101-GB AUTOMATIC AIR VENT VALVES MANUAL ... - …
www.wattsindustries.comManual venting plug movement (mm) 150 120 90 60 30 0 010,5 1,5 2,5 3,523 (Pressure equal to 3 bar) The flow rate in manual air venting varies according to the down movement of the plug, as shown in the following diagram, at a system pressure of 3 bar. Air discharge rate - Operating pressure A. Automatic vent B. Manual vent 1. Body 2. Cover 3 ...