GAS RELEASE VALVE

摘要

The gas release valve to be mounted in an access port of a battery cell comprises a housing (26) the upper side of which is closed by a lid (14) whereas the lower side has an opening (42) leading into the battery cell, said opening (42) being in communication, via degassing passageways closed by means of an elastic sealing element (38), with at least one vent (46) provided in the lid (14). The elastic sealing element (38) is a preloaded non-return element the inner surface of which is urged, into sealing contact with a seat (36) provided in said housing (26), by it s own elasticity and, in addition, by an increasing outer pressure acting through said vent (46) against the outer surface of said sealing element (38).