What makes Tapflo Air Operated Diaphragm Guardian System different
The Air Operated Diaphragm Guardian System is an energy conservation device designed to protect an air operated double diaphragm (AODD) pump from operating in an inefficient manner that uses unnecessary energy and reduces the life of its parts. It also offers the added benefit of providing greater safety to applications of high risk.
Data & Limits
|Ambient Temperature, ºC||-20 to +40|
|Product Temperature, ºC||-20 to +110|
|Air Pressure, Bar (G)||8|
|Product Pressure, Bar (G)||8|
|Weight, Kg||2 Kg|
|Dimensions||96 x 71 x 161 mm|
Functions & Application
The Air Operated Diaphragm Guardian System monitors fluid pressure, changing its output if the monitored pressure rises above or falls below the set point of the Guardian (dependant on configuration), controlling the associated pump according to the following applications:
- Dry Run & Stop
- Dead Head & Stop
- Dead Head & Restart
- Barrier Pump Monitoring & Control
Dry Run & Stop
The Air Operated Diaphragm Guardian System monitors the fluid discharge pressure of the pump, stopping it if the pressure falls below the set point, caused by a lack of media on the suction causing air to be ingested into the pump. (PDRN System)
Dead Head & Stop
The Air Operated Diaphragm Guardian System monitors the fluid discharge pressure of the pump, stopping it if the pressure rises to the set point, caused by a closed valve or over pressure in the discharge line. (PDHS System)
Dead Head & Restart
The Air Operated Diaphragm Guardian System monitors the fluid discharge pressure of the pump, stopping it if the pressure rises to the set point, caused by a closed valve or over pressure in the discharge line. When the pressure falls below the set pressure, the pump automatically restarts. (PDHR System)
Barrier Pump Monitoring & Control
Barrier pumps (TB) have an additional set of diaphragms used to back up the primary diaphragms. In case of a breach the liquid remains inside the pump, instead of leaking out through the air exhaust. The Guardian monitors the pressure between the primary and secondary diaphragms, stopping the pump if the pressure increases above the set point. (PDFM System)
This system is to be used in conjunction with the Diaphragm Alarm System which will immediately alarm and shut of the pump at an eventual diaphragm break. It ensures that no liquid will leak to the environment or to the air system of the pump – a perfect system where you require a high level of safety.
How it works: The system consists of a backup diaphragm pump (TB), and a control and alarm system. Under normal operation, the chamber between the backup diaphragm and the wetted diaphragm is set to vacuum by the control system. If any of the diaphragms would break, the pressure will rise in the vacuum chamber. The control system will then switch of the pump and turn on the horn. This system is allowed for use also in explosion hazardous areas, since only pneumatic components are used.
The panel is 200 x 200 x 130 mm and is available for all Tapflo AODD pumps from 2” and up and can be supplied in either ABS Plastic (IP55 or 65) and Stainless Steel AISI 316 (IP44).