Patent ID: 7562672

Claim:
An ampoule assembly, comprising: an ampoule; an inlet line for the ampoule, the inlet line having a first shut-off valve disposed therein between the ampoule and a first connection point of a first bypass line and the inlet line; an outlet line for the ampoule, the outlet line having a second shut-off valve disposed therein between the ampoule and a second connection point of the first bypass line and the outlet line; a third shut-off valve disposed in the inlet line between the first shut-off valve and the ampoule; and a fourth shut-off valve disposed in the outlet line between the second shut-off valve and the ampoule, wherein the first bypass line is connected between the inlet line and the outlet line, the first bypass line having a bypass shut-off valve disposed therein to fluidly couple or decouple the input line and the outlet line.