The rubber or plastic mouthpiece is unscrewed and pressing the mouth against a light spring so as to unseat the valve and allow the air to pass.
Irabha okanye ilungu lomlomo weplastiki alisikrufwelanga kwaye icinezela umlomo ochasene nesipringi sesibane njengokususa isivalo kwaye nokuvumela umoya ugqithe.