Vapor recovery adapter

A vapor recovery adapter for use with a plurality of tanks having vapor therein to be removed including a housing mounted on one of the tanks and having a first inlet port communicating with the one tank to receive vapor therefrom, said housing having a second inlet port communicating with at least one other tank to receive vapor therefrom, said housing having a first outlet port in communication with a vent to atmosphere, said housing having a chamber with which said first and second inlet ports and said first outlet port communicate whereby vapor may flow from the tanks through said first and second inlet ports to said first outlet port, said housing having a second outlet port disposed above said first outlet port, and housing having a passage therein, one end of said passage communicating with said chamber and the other end of said passage communicating with said second outlet port, and valve means movable in said housing between a first position in which said valve means blocks said first outlet port and opens said second outlet port without blocking communication of said first inlet port with said chamber and communication of said second inlet port with said chamber and a second position in which said valve means blocks said second outlet port and opens said first outlet port without blocking communication of said first inlet port with said chamber and communication of said second inlet port with said chamber, said valve means being moved to its first position when at least one of the connected tanks is being supplied liquid to expell vapors from any of the connected tanks through said second outlet port, said valve means being moved to its second position when none of the connected tanks is being supplied liquid.