4. The monoflange valve assembly Based on claim one, wherein the valve assembly includes a bellows, the bellows having a radially inward part sealingly connected into a radially inward percentage of the valve member. It takes away that need for two valves and decreases everything into 1. That is the http://arthurbpxfl.blogolize.com/New-Step-by-Step-Map-For-monoflange-29249119