Nonreturn valve useful in medical equipment comprises a tube connector with recesses that are separated by membrane support surfaces and are connected to an outlet channel via narrow deep grooves

摘要

Nonreturn valve comprising a flexible membrane disc on a valve seat between two tube connectors, where the membrane disc has openings leading to an outlet chamber and one connector has recesses communicating with an outlet channel. The recesses (28) are separated by membrane support surfaces (30) and are connected to the outlet channel (24) via narrow deep grooves.