Astral Air Admittance Valves respond to the negative air pressure created in a sewage system when sanitary facilities are used. Sewage flow can produce negative pressure and then water is drawn out of the siphons. Air admittance valves help to provide air supply to the sewage system and thus compensate for negative air pressure. Astral Air Admittance Valves are manufactured with latest European standards and their working temperature range is from -20°c to +60°c.
|Technical Data||Diameter (mm)|
|Air Flow (ltr/sec)||6.1||23.2|
|Working Temp. Range||-20°c to +60°c|
|Applicable Standards||EN 12380, EN ISO 3126|