A sanitary diaphragm valve is provided that includes a generally dome shaped diaphragm having a central boss that can be connected to or driven by a valve actuator. The diaphragm includes an outer peripheral edge and a relatively thin web portion that connects the boss to the outer edge. In one embodiment,...http://www.google.com/patents/US6394417?utm_source=gb-gplus-sharePatent US6394417 - Sanitary diaphragm valve
