Main application of the diaphragm pump insisting the preference which is based on the American patent application 10/439,535th number which is applied on 2003 May 16th, is the PCT international patent application which is applied by the American corporate body Warner engineering corporation on 2004 May 13th.

摘要

The diaphragm pump which overcomes the problem of membrane damage and the self-priming failure which originate in overcharging the transport room. Mechanical stopper, the overcharging prevention element of form such as spring or the valve system which it sticks completely is provided.