Johnson Pump MDR Series - 2 Technical Information; Material Specification; Suction Lift and Liquid Level; Max Suction Lift (Hs)

9
MDR/EN (0909) 1.0
2.0 Technical information
2.1 Material specification
Flange (not exposed to the liquid) Polypropylene filled with glass fibre
Magnet housing, impeller, body
Polypropylene filled with glass fibre alt
Polyvinylidenfluoride with carbon fibre
Shaft, wear plates
Ceramic/Al
2
O
3
Impeller bearings
PTFE-Rulon LD
O-ring
FPM
Impeller magnet
(not exposed to the liquid)
Ferrite
2.2 Suction lift and liquid level
2.2.1 Max suction lift (Hs)
Hs [m] =
To be used only as a guidance.
Please contact your local
distributor for NPSH curves.
2.2.2 Min required liquid level
Minimum required liquid level at the
suctionnozzlemustbemorethan3x
the diameter of the suction pipe.
1ø x 3 > H
1ø x 3 > H
1ø
ø1
Foot-valve
Hs
4
Specific gravity [kg/dm
3
]
Pump
Foot-valve
Filling liquid