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Double-diaphragm gauge protector

  • US 5,652,391 A
  • Filed: 05/12/1995
  • Issued: 07/29/1997
  • Est. Priority Date: 05/12/1995
  • Status: Expired due to Fees
First Claim
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1. A double-diaphragm gauge protector comprising:

  • a diaphragm housing comprising;

    a upper housing body having a pressure outlet port extending though a body wall for accommodating connection with a pressure sensing device;

    a lower housing body having a process fluid inlet port through a body wall for accommodating connection with a fluid handling device; and

    a central housing body having an annular passage therethrough interconnected between the upper and lower housing bodies;

    a first diaphragm disposed within the upper housing body across the annular passage, said first diaphragm having an upwardly facing top surface and a downwardly facing bottom surface, the first diaphragm comprising a transfer pad projecting outwardly from the bottom surface toward the lower housing body;

    a second diaphragm disposed within the lower housing body across the annular passage, said second diaphragm having an upwardly facing top surface and a downwardly facing bottom surface, the second diaphragm comprising a transfer pad projecting outwardly from the top surface toward the first diaphragm, wherein the transfer pads of the first and second diaphragms are positioned facing one another; and

    a free floating spacer disposed within the central housing body and interposed between opposing surfaces of the first and second diaphragms, wherein the transfer pads of both the first and second diaphragm are disposed within a central opening of the spacer.

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