Technical Information; Material Specification; Suction Lift And Liquid Level; Max Suction Lift (Hs) - Johnson Pump MDR Series Instruction Manual

2.0 Technical information

2.1 Material specification

Flange (not exposed to the liquid)
Magnet housing, impeller, body
Shaft, wear plates
Impeller bearings
O-ring
Impeller magnet
(not exposed to the liquid)

2.2 Suction lift and liquid level

Max suction lift (Hs)

2.2.1
Hs [m] =
Specific gravity [kg/dm
To be used only as a guidance.
Please contact your local
distributor for NPSH curves.

Min required liquid level

2.2.2
Minimum required liquid level at the
suction nozzle must be more than 3 x
the diameter of the suction pipe.
MDR/EN (0909) 1.0
Polypropylene filled with glass fibre
Polypropylene filled with glass fibre alt
Polyvinylidenfluoride with carbon fibre
Ceramic/Al
PTFE-Rulon LD
FPM
Ferrite
4
]
3
Hs
O
2 3
Filling liquid
Pump
Foot-valve
Foot-valve
ø1
9