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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

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.

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1. An air operated diaphragm pump comprising: 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 ai

1. An air operated diaphragm pump comprising: 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 through the gas passageway, part of the syrup passageway configured in fluidic communication with the orifice of the housing with an inside pressure that is greater than an external pressure of the outside atmosphere when the syrup is passing through the air operated diaphragm pump via the syrup passageway; andan indicator arrangement configured to be received in the orifice of the housing to communicate with the syrup passageway, and also configured to respond or activate when a vacuum force exceeds a predetermined level when the syrup is no longer passing through the air operated diaphragm pump via the syrup passageway, and configured with a window to provide a visual indication when the syrup is no longer passing through the air operated diaphragm pump via the syrup passageway and the gas is no longer passing from a gas inlet port through the gas passageway and the air operated diaphragm pump;wherein the indicator arrangement comprises:an indicator housing member comprising an outer cylindrical wall portion having the window formed therein, an inner cylindrical wall portion and a connecting portion coupling the outer cylindrical wall portion and the inner cylindrical wall portion together so as to form a channel in between the outer cylindrical wall portion and the inner cylindrical wall portion; anda first diaphragm configured in the orifice to provide a seal between a circumferential rim of the orifice and the connecting portion of the indicator housing member. 2. An air operated diaphragm pump according to claim 1, wherein the indicator arrangement comprises: a retainer member having a cylindrical surface with some indicia arranged thereon to provide the visual indication in the window when the syrup is no longer provided through the air operated diaphragm pump via the syrup passageway. 3. An air operated diaphragm pump according to claim 2, wherein the indicator housing member has a cylindrical configuration. 4. An air operated diaphragm pump according to claim 3, wherein the indicator arrangement comprises: a piston configured to move inside the inner cylindrical wall portion of the indicator housing member, and having one end portion fixedly coupled to a center portion of the first diaphragm. 5. An air operated diaphragm pump according to claim 4, wherein the indicator arrangement comprises: a retainer member having a corresponding cylindrical configuration and comprising: an outer cylindrical wall portion,an inner cylindrical wall portion anda connecting portion coupling the outer cylindrical wall portion of the retainer member and the inner cylindrical wall portion of the retainer member together so as to form a channel in between the outer cylindrical wall portion of the retainer member and the inner cylindrical wall portion of the retainer member,wherein the inner cylindrical wall of the retainer member is configured to form an inner cavity portion to receive another end portion of the piston,wherein the outer cylindrical wall portion of the retainer member is configured to move in relation to the outer cylindrical wall portion of the indicator housing member, and comprises a cylindrical surface with some indicia arranged thereon to provide the visual indication in the window of the indicator housing member when the syrup is no longer provided through the air operated diaphragm pump via the syrup passageway. 6. An air operated diaphragm pump according to claim 5, wherein the indicator arrangement comprises: an elastic member configured or arranged in the channel of the indicator housing member and the channel of the retainer member in compression between the indicator housing member and the retainer member. 7. An air operated diaphragm pump according to claim 6, wherein the indicator arrangement comprises: a transparent cap configured to engage an outside portion of the outer cylindrical wall portion of the indicator housing member to hold, retain and contain the indicator arrangement together and to allow the viewing of the visual indication when the syrup is no longer provided through the air operated diaphragm pump via the syrup passageway. 8. An air operated diaphragm pump according to claim 4, wherein the indicator arrangement comprises: an elastic member configured or arranged in the channel of the indicator housing member and the channel of the retainer member in compression between the indicator housing member and the retainer member,wherein the elastic member is a spring and the piston is arranged inside the spring. 9. An air operated diaphragm pump according to claim 1, wherein the indicator arrangement comprises a flange configured to fasten the indicator arrangement to the housing in relation to the orifice. 10. An air operated diaphragm pump according to claim 1, wherein the indicator arrangement is located on a top surface of the pump so as to be viewable. 11. An air operated diaphragm pump according to claim 1, wherein the first diaphragm of the indicator arrangement comprises a peripheral portion; andthe housing has the circumferential rim formed therein to receive the peripheral portion of the first diaphragm. 12. An air operated diaphragm pump according to claim 1, wherein the connecting portion of the indicator housing member coupling the outer cylindrical wall portion of the indicator housing member and the inner cylindrical wall portion of the indicator housing member together is disk-shaped; wherein the indicator arrangement further comprises:a piston configured to move inside the inner cylindrical wall portion of the indicator housing member, and having one end portion fixedly coupled to a center portion of the first diaphragm;a retainer member having a corresponding cylindrical configuration and comprising an outer cylindrical wall portion, an inner cylindrical wall portion and a disk-shaped connecting portion coupling the outer cylindrical wall portion of the retainer member and the inner cylindrical wall portion of the retainer member together so as to form a channel in between the outer cylindrical wall portion of the retainer member and the inner cylindrical wall portion of the retainer member, the inner cylindrical wall portion of the retainer member configured to form an inner cavity portion to receive another end portion of the piston, the outer cylindrical wall portion of the retainer member configured to move in relation to the outer cylindrical wall portion of the indicator housing member, and having a cylindrical surface having some indicia arranged thereon to provide the visual indication in the window of the indicator housing member when the syrup is no longer provided through the air operated diaphragm pump via the syrup passageway; andan elastic member configured to be arranged in the channel of the indicator housing member and the channel of the retainer member in compression between the indicator housing member and the retainer member; anda transparent cap configured to engage an outside portion of the outer cylindrical wall portion of the indicator housing member to hold, retain and contain the indicator arrangement together and to allow the viewing of the visual indication when the syrup is no longer provided through the air operated diaphragm pump via the syrup passageway. 13. An air operated diaphragm pump according to claim 1, wherein the syrup passageway is formed between a syrup inlet port and a suction plenum or channel; and wherein the air operated diaphragm pump further comprises:an automatic shutoff (ASO) arrangement having a valve body having a first end and a second end and arranged between the gas inlet port of the gas passageway and the syrup inlet port of the syrup passageway, and a piston/diaphragm arrangement comprising a second diaphragm coupled to the second end of the valve body and arranged in the syrup passageway between the syrup inlet port and the suction plenum or channel, and configured to seal the syrup passageway from the gas passageway;wherein the ASO arrangement is configured to respond or activate when a vacuum force exceeds a predetermined level when the syrup is no longer provided to the syrup inlet port through the air operated diaphragm pump via the syrup passageway, and stop the gas from passing from the gas inlet port through the gas passageway and the air operated diaphragm pump. 14. An air operated diaphragm pump according to claim 13, wherein the ASO arrangement comprises: the valve body configured to be in communication with the gas passageway on the first end and the syrup passageway on the second end, and also configured to allow the gas to pass through in order to pump the syrup through the air operated diaphragm pump;a plunger shaft arranged to move in the valve body;the piston/diaphragm arrangement arranged on one end of the plunger shaft;a gas valve arrangement arranged on another end of the plunger shaft;the piston/diaphragm arrangement configured to respond when the vacuum force exceeds the predetermined level when the syrup is no longer provided through the air operated diaphragm pump via the syrup passageway, to move the plunger shaft in the valve body, and to cause the gas valve arrangement to stop the gas from passing through the gas passageway and the air operated diaphragm pump. 15. An air operated diaphragm pump according to claim 14, wherein the piston/diaphragm arrangement senses pressure in the syrup passageway and reacts by closing the gas valve connected to the piston/diaphragm arrangement via the plunger shaft. 16. An air operated diaphragm pump according to claim 14, wherein the gas valve arrangement comprises: the gas valve configured on the another end of the plunger shaft to stop the gas from passing through the gas passageway and the air operated diaphragm pump. 17. An air operated diaphragm pump according to claim 16, wherein the gas valve arrangement comprises an O-ring configured between the plunger shaft and an inner gas channel portion of the valve body; andwherein the gas valve is configured to move against the O-ring and stop the gas from passing through the gas passageway and the air operated diaphragm pump. 18. An air operated diaphragm pump according to claim 14, wherein the piston/diaphragm arrangement is configured to respond when the vacuum force does not exceed the predetermined level when the syrup is provided through the air operated diaphragm pump via the syrup passageway, to move the plunger shaft in the valve body, and to cause the gas valve arrangement to allow the gas to pass through the gas passageway and the air operated diaphragm pump. 19. An air operated diaphragm pump according to claim 14, wherein the ASO arrangement comprises an adjusting gland and an elastic member, including a coil spring, configured to adjust the predetermined level that the vacuum force may need to exceed when the syrup is no longer provided through the air operated diaphragm pump via the syrup passageway in order to stop the gas from passing through the gas passageway and the air operated diaphragm pump. 20. An air operated diaphragm pump according to claim 19, wherein the adjusting gland may be configured to be adjusted by being screwed into and/or out of the housing to compress or relax associated compression of the elastic member.