公开(公告)号：US10240591B2

公开(公告)日：2019-03-26

申请号：US14391110

申请日：2013-04-09

Applicant: Flow Control LLC.

Inventor： Christopher H. Verdugo ,  Peter M. Wright ,  Jimmie L. Jackson, Jr.

IPC: F04B49/03 ,  F04B43/073 ,  F04B43/00 ,  F04B49/10 ,  G01L19/10

Abstract: An air operated diaphragm pump is provided a housing having an orifice formed therein; a gas passageway configured to provide gas through the air operated diaphragm pump in order to pump syrup through the air operated diaphragm pump; a syrup passageway configured to provide the syrup through the air operated diaphragm pump when the gas is passed though the gas passageway, part of the syrup passageway configured in fluidic communication with the orifice of the housing with an inside pressure greater than an external pressure of the outside atmosphere when the syrup is provided through the air operate diaphragm pump; and an indicator arrangement configured or arranged in the orifice of the housing to communicate with the syrup passageway, and to respond or activate when a vacuum force exceeds a predetermined level and provide a visual indication when the syrup is no longer provided through the air operated diaphragm pump.