One piece double membrane diaphragm valve

Abstract

A one piece double membrane diaphragm is disclosed. The double membrane diaphragm has an upper (308) and lower diaphragm membrane (310) joined together by a central section (312). The upper diaphragm membrane (308) is configured to seal against a top sealing surface (222) when the diaphragm is in a first position. The lower diaphragm membrane (310) is configured to seal against a bottom sealing surface (224) when the diaphragm is in a second position. An upper rim (318) may be attached to the upper diaphragm membrane (308) where the upper rim (318) is configured to hold the upper diaphragm membrane (308) into the valve. A lower rim (320) may be attached to the lower diaphragm membrane (310) where the lower rim (320) is configured to hold the lower diaphragm membrane (320) into the valve. The diaphragm may also be made from a resilient material and shaped ia such a way as to create a spring force holding the diaphragm into a default position in the valve.

Dependencies are inferred from the claim text.