Patent ID: 8424562
Filing Date: 2013-04-23
Classification: F16K,Y10T

Abstract:
1. A diaphragm device for a check valve, said diaphragm device comprising: a. a first diaphragm, adapted to cover a first orifice, b. a second diaphragm, adapted to cover a second orifice adjacent the first orifice, the first and second orifices having parallel length axes, c. a resilient interconnecting section having a first end connected to the first diaphragm and a second end connected to the second diaphragm so as to interconnect the diaphragms, d. a first and second operation devices, each connected to a respective one of said diaphragms and adapted to enable movement of said diaphragm substantially along a length axis of said orifice, each of said operation devices comprising at least one first operation organ, and at least one second operation organ, wherein: wherein: for each operation device, said first portion of said first operation organ is adapted to be connected to a check valve housing, and said second portion of said first operation organ is connected to said second portion of said second operation organ, and wherein said first portion of said second operation organ is connected to the respective one of the diaphragms, and said second portion of said second operation organ is connected to said second portion of said first operation organ, for each operation device, said first operation organ is movable in relation to said second operation organ and said second operation organ is movable in relation to the respective one of the diaphragms, for enabling movement of said diaphragm substantially along said length axis of said orifice, and said diaphragms comprise resilient material such that each diaphragm is angled in relation to said length axis of said respective orifice and opposingly angled in relation to the other of the diaphragms when the diaphragms are operated by said first and second operation devices and, for each diaphragm, the angle resulting in a portion of the diaphragm connected to the interconnecting section being spaced further from the respective orifice than a portion of the diaphragm connected to the respective operation device and resulting in a low pressure drop of fluid passing said diaphragm; and wherein each diaphragm is wider than the interconnecting section.