Over-pressure valve with positioning spring

摘要

The over-pressure valve has, at least, one positioning spring (3/3') for adjustment of the maximum permissible pressure difference, and an over-pressure valve housing (1). The housing contains, at least, one thread-like groove (2), in which the positioning spring is directly supported under radial tension, and is adjustable within the groove. The sealing surface plane may have a seal (5) that lies about it. An unperforated disc (4) may be found between the positioning spring and the seal, that is ideally parallel and flat. The disc may be somewhat flexible and bendable.