(1) The above mentioned capacities are based on 18°C water and a driving-air pressure of 3 bar, with 10 m.l.c. discharge head and 1 meter negative suction head. The effective flowrate of any given system depends on both the nature of the pumped fluid (viscosity-density-vapour pressure) and most important the layout of the suction piping (geometric pumped height-size-length volume and friction losses,etc.).
(2) Flanges are normally DIN 2532 ND 10 or ANSI 150 lbs. Other standards can be supplied.
(3) The above data are obtained under self-priming conditions with P.T.F.E. “shuttle” valves for the RP 20 model and for RP 60 Simplex and Duplex models with standard P.T.F.E. ball check valves for RP 150Simplex and Duplex models.
- Duplex pumps are normally supplied without inlet and outlet manifolds. These manifolds can be supplied if required but normally it is more efficient to include them into the piping scope