| 摘要 |
The object of the present invention is to provide safety valve elements for condenser use, which rupture precisely at a predetermined pressure especially stably in a low pressure range so as to release inner pressure outside and can be manufactured readily, and to provide a condenser which incorporates the safety valve elements. The safety valve elements for condenser use according to the present invention comprises a metal substrate A which is provided with a perforated opening C and a metal foil B laid over the metal substrate A to close the perforated opening C. <IMAGE> |
