Patent ID: 6094970
Filing Date: 2000-08-01
Classification: F04B

Abstract:
A leak detector for a pump having a plurality of stacked diaphragms, each diaphragm having an annular sealing area disposed radially outside of a working area, comprising:a plurality of flat spacer rings each having discontinuous channels and opposed faces and being disposed in face-to-face abutting and stacked relationship with one another and clamped between the sealing areas of the diaphragms, the discontinuous channels of the spacer rings together forming tortuous leak paths extending through the flat spacer rings from the working areas to a point outside of the sealing areas;a port disposed at or outside of the point, which port is in fluid communication with the point;means for providing a leakage warning via a visual indication of fluid in the port; anda circumferential fluid-tight seal disposed radially outside of the port and sealing off fluid loss beyond the outer periphery of the plurality of diaphragms and flat spacer rings.