Model    PS820/830 Bolted Metal   
Wetted Housing    Aluminum, Ductile Iron, SS316   
Diaphragm Rubber    Buna N (Nitrile, NBR), EPDM, Neoprene, Viton®   
Diaphragm TPE    Saniflex™(Hytrel), Wil-Flex™(Santoprene), Polyurethane   
Diaphragm Teflon    PTFE   
Approx wg 820 Threaded AL    47    kg
Approx wg 820 Threaded SS    73    kg
Approx wg 820 Threaded Iron    71    kg
Approx wg 830 Flanged AL    54    kg
Approx wg 830 Flanged SS    81    kg
Approx wg 830 Flanged Iron    82    kg
Air Inlet    3/4"    FNPT
Pump inlet    2"   
Pump outlet    2"   
Suction lift dry    7.4    M
Displacement per Stroke    2.8    Litre
Max Flow    609    LPM
Max Head    8.6    Bar
Max Size Solids    6.4    mm
The above pump flow base on Rubber diaphragm