IT1206440B - Diaphragm pump with reed valve - has contoured surface for hydraulic fluid chamber contacted by circular reed valve separating diaphragm and stop washer - Google Patents

Diaphragm pump with reed valve - has contoured surface for hydraulic fluid chamber contacted by circular reed valve separating diaphragm and stop washer

Info

Publication number
IT1206440B
IT1206440B IT8337077A IT8337077A IT1206440B IT 1206440 B IT1206440 B IT 1206440B IT 8337077 A IT8337077 A IT 8337077A IT 8337077 A IT8337077 A IT 8337077A IT 1206440 B IT1206440 B IT 1206440B
Authority
IT
Italy
Prior art keywords
reed valve
diaphragm
stop washer
contoured surface
hydraulic fluid
Prior art date
Application number
IT8337077A
Other languages
Italian (it)
Original Assignee
Graco Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Graco Inc filed Critical Graco Inc
Priority to IT8337077A priority Critical patent/IT1206440B/en
Application granted granted Critical
Publication of IT1206440B publication Critical patent/IT1206440B/en

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Landscapes

  • Reciprocating Pumps (AREA)

Abstract

The resilient diaphragm membrane is interposed in a chamber to form a first chamber section for containing pumped liquid and a second chamber section for containing hydraulic pumping fluid. The second chamber section has a contoured surface with a narrowed inlet aperture sized to snugly accept a diaphragm stop washer. The diaphragm stop washer and the diaphragm membrane are secured together on a stem and are separated by a circular reed valve member which contacts the contoured chamber surface in sealing relationship whenever the stop washer is seated within the narrowed aperture.
IT8337077A 1977-04-14 1977-04-14 Diaphragm pump with reed valve - has contoured surface for hydraulic fluid chamber contacted by circular reed valve separating diaphragm and stop washer IT1206440B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
IT8337077A IT1206440B (en) 1977-04-14 1977-04-14 Diaphragm pump with reed valve - has contoured surface for hydraulic fluid chamber contacted by circular reed valve separating diaphragm and stop washer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8337077A IT1206440B (en) 1977-04-14 1977-04-14 Diaphragm pump with reed valve - has contoured surface for hydraulic fluid chamber contacted by circular reed valve separating diaphragm and stop washer

Publications (1)

Publication Number Publication Date
IT1206440B true IT1206440B (en) 1989-04-21

Family

ID=11320875

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8337077A IT1206440B (en) 1977-04-14 1977-04-14 Diaphragm pump with reed valve - has contoured surface for hydraulic fluid chamber contacted by circular reed valve separating diaphragm and stop washer

Country Status (1)

Country Link
IT (1) IT1206440B (en)

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