unilateral action one way degassing valve

{"cid":"91184128","title":"Unilateral Action One Way Degassing Valve 19.8mm Outer Dia For Aluminum Coffee Bags \/ 1 Way Air Valve","imgUrl":"https:\/\/img.ismap.com\/nimg\/4b\/7c\/b2d5b6334390f690a9a6f85d07d7-200x200-1.jpg","attrs":{"Price":"0.019 - 0.027","Brand Name":"Cheer Pack","Model Number":"A2","Delivery Time":"Around seven days","Certification":"SGS","Place of Origin":"Guangzhou,China","Payment Terms":"Western Union, T\/T, , Paypal","Packaging Details":"52*43*48cm","Product":"Unilateral action 1 way air valve","Material":"PE main body & Silicon gasket","Feature":"Unilateral action exhaust air","Height":"5.7mm","Outer Dia":"19.8mm","Function":"Aluminum coffee bags","Sealing on":"Coffee bean vacuum bags"}}