Actual Picture Datasheet of Dual Vent Performance: Dual Vent is designed to improve double check valve have risk to let the dust particulates entry enclosure during negative pressure happen under a tough environment. The structure inside combines a porous filter under double check valve and it could help to prevent dust particulates entry enclosure and meet IP68,IP69K. Below is the detail informations: ->Block ingress of wide range of contaminants,from rain and insects to dirt,dust,sand and other,particulates, ->IP 66,IP67,IP68,IP69K protection class and -40° C to +125° C ->operating temp.range.Best to use under the tough environment. ->No direction installation requirement. Application: No allow venting always(Gas diffusion) and only open when there is pressure.(Gas Oil Tank) Can block humidity and dust under a high humidity enviroment.(Mining lamp) Can block humidity and dust under a high humidity enviroment.(Battery Pack Enclosure) Can block humidity and dust under a high humidity enviroment.(Gear Box,Powertrain,Motor) Can block humidity and dust under a high humidity enviroment.(Senser) www.milvent.com; [email protected]