The V2B flow-through valve cap is designed for high pressure truck tire service. Seals like a high pressure valve cap, yet offers the convenience of an inflate through extension. It also performs like a check valve- the seal becomes tighter in the event of a core failure.The V2B reduces pressure check time by 65% offering a efficient money and labor savings alternative to the common valve cap. The heat resistant grommets provide additional protection for the extended high temperature running.