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Application: Performance Range: especially suitable where safety and gas tightness are essential, e.g., with toxic, radio- active or particularly expensive gases. transfer, evacuation and compression of neutral, slightly aggressive and slightly corrosive gases and vapours flow rate: up to 280 l/min (at atm. pressure) ultimate vacuum: down to 3 mbar abs. maximum Pressure: up to 3 bar g Special Pump Feature: greatly increased safety by double diaphragm system Versions for explosion-proof applications - explosion protection for the motor and pump (electrical and mechanical explosion protection) Pump Principle: diaphragm pump double diaphragm system (see illustration). A second diaphragm is located under- neath the working diaphragm. This second diaphragm is under less mechanical stress when the pump is operating. If gas should leak at the working diaphragm, it will still remain inside the pump space. The space between both dia- phragms can be monitored so that any damage to the working diaphragm will be noted im- mediately
N 87 TTE-Ex Chemically- resistant mini- diaphragm gas sampling pump with ATEX rating 1 Diaphragm head2 Compression space3 Working diaphragm4 Spacer ring 5 Safety space6 Safety diaphragm7 Crankcase 8 Eccentric housing9 Connecting rod10 Diaphragm support11 Inlet valve12 Outlet valve Double diaphragm pump withdouble safety feature: Safety dia- phragm and explosion protectionfor the entire pump to ATEX. Diaphragm Compressors and Vacuum Pumps for use withhazardous or valuable Gases and Vapours, Ex-Pumps to ATEX

OEM brochure - 9163 7

19 = Diaphragm Compressors and Vacuum Pumps for use with hazardous or valuable Gases and Vapours20 = Diaphragm Pumps in explosion protection to ATEX