4 Description of the micro annular gear pump
Operating manual mzr-11557 Ex
16
Technical data subject to change without prior notice!
Last update: March 2019
4.3
Construction materials
The micro annual gear pump mzr -11557 Ex is deliverable in four different
material combinations which are listed in , table 7 and table 8.
Wetted parts
mzr-11557-hy
mzr-11557-hs
Rotor materials
tungsten carbide Ni-based
tungsten carbide Ni-based
Control plates
tungsten carbide Ni-based
tungsten carbide Ni-based
Pump case material
alloy C22 (2.4602)
stainless steel 316 L
bearing material
tungsten carbide Ni-based
tungsten carbide Ni-based
shaft material
tungsten carbide Ni-based
tungsten carbide Ni-based
Static sealing material
FFPM (Kalrez
®
Spectrum™ 6375)
FPM
optional: FFPM (Kalrez
®
Spectrum™
6375)
Distance washer
PTFE
PTFE
table 7
Construction materials of the wetted parts, rotor material tungsten carbide
Wetted parts
mzr-11557-hcy
Rotor materials
tungsten carbide Ni-based
Control plates
Al
2
O
3
ceramics
Pump case material
alloy C22 (2.4602)
bearing material
sintered silicon carbide (SSiC),
Al
2
O
3
ceramics
shaft material
sintered silicon carbide (SSiC)
Static sealing material
FFPM (Kalrez
®
Spectrum™ 6375)
Distance washer
PTFE
table 8
Construction materials of the wetted parts, rotor material tungsten carbide
!
The resistance of the construction materials to the delivered liquids should be
verified by the operator for each individual application.
Pumps handling non-lubricating liquids have shorter service lives.