Model    GPS820/830 Natural Gas Operated   
Wetted Housing    Aluminum, SS316   
Diaphragm TPE    Wil-Flex™(Santoprene)   
Diaphragm Teflon    PTFE   
Approx wg 820 Threaded AL    47    kg
Approx wg 830 Flanged AL    54    kg
Approx wg 820 Threaded SS    73    kg
Approx wg 830 Flanged SS    81    kg
Air Inlet    3/4"    Inch FNPT
Pump inlet    2"    Inch FNPT
Pump outlet    2"    Inch FNPT
Suction lift dry    6.1    M
Displacement per Stroke    2.4    Litre
Max Flow    636    LPM
Max Head    8.6    Bar
Max Size Solids    6.4    mm
The above pump flow base on Full-Stroke PTFE diaphragm