Standard Inflation Valve The inflation valve is run with the bottom plugged type Thru-Tubing Permanent Bridge Plug's through which fluid cannot be pumped going in the hole. The inflation valve is a sleeve valve that allows circulating fluid from the tubing to the annulus while going in the hole. At setting depth a ball is dropped, seating in the inflation valve and then pressure is applied. This applied pressure shifts the sleeve so that communication to the annulus is sealed off and communication through the tool to the bridge plug is opened.