Grundfos CR 1s Instrucciones De Instalación Y Operación página 10

Example
Shaft seal
A O-ring seal with fixed driver
B Rubber bellows seal
E Cartridge seal with O-ring
H Balanced cartridge seal with O-ring
K Metal bellows cartridge seal
O Double seal, back-to-back
P Double seal, tandem
X Special version
B Carbon, synthetic resin-impregnated
H Cemented tungsten carbide, embedded (hybrid)
Q Silicon carbide
U Cemented tungsten carbide
X Other ceramics
E EPDM
F FXM
K FFKM
V FKM
1)
In August 2003 the NEMA version pump code was discontinued for all material numbers created by Grundfos manufacturing
companies in North America. The NEMA version pump code will still remain in effect for existing material numbers. NEMA version
pumps built in North America after this change will have either an A or a U as the pump version code depending on the date the
material number was created.
2)
If a pump incorporates more than two pump versions, the code for the pump version is X. X also indicates special pump versions not
listed above.
10
A -G -A -E -H QQ E