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Double diaphragm pump and related methods

  • US 20070077156A1
  • Filed: 07/11/2006
  • Published: 04/05/2007
  • Est. Priority Date: 07/13/2005
  • Status: Active Grant
First Claim
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1. A pump for moving a process fluid, the pump comprising:

  • a first inlet pressure-activated diaphragm valve, a first outlet pressure-activated diaphragm valve, a second inlet pressure-activated diaphragm valve, and a second outlet pressure activated diaphragm valve, a first pump chamber comprising a pressure-activated diaphragm, wherein the first pump chamber achieves fluid communication with an input line via the first inlet pressure-activated diaphragm valve, and wherein the first pump chamber achieves fluid communication with an outlet line via the first outlet pressure-activated diaphragm valve, and a second pump chamber comprising a pressure-activated diaphragm, wherein the second pump chamber achieves fluid communication with the input line via the second inlet pressure-activated diaphragm valve, and wherein the second pump chamber achieves fluid communication with the outlet line via the second outlet pressure-activated diaphragm valve, wherein the diaphragm of the first inlet pressure-activated diaphragm valve and the diaphragm of the first pump chamber are simultaneously moved by a first motive fluid, and wherein the diaphragm of the second inlet pressure-activated diaphragm valve and the diaphragm of the second pump chamber are simultaneously moved by a second motive fluid.

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