Pressure responsive device

摘要

A pressure responsive device suitable for high pressure hydraulic applications has a formed metal disc or diaphragm adapted to move from an original dished configuration toward an inverted dished configuration with snap action in response to the application of a selected fluid pressure. Support means of selected surface radius extend into the space defined by the original dished configuration of the diaphragm to intercept and limit such diaphragm movement to prevent damage to the diaphragm under the applied pressure and to limit stresses in the diaphragm material particularly adjacent to the periphery of the dished part of the diaphragm for improving reliability and service life of the device.