Grundfos ALPHA1 L Serie Instrucciones De Instalación Y Funcionamiento página 13

5.5 Accessories
5.5.1 Unions and valve kits
Product numbers, unions
Rp
3/4 1
25-xx G 1 1/2 529921 99672022
32-xx G 2 509921
G-threads have a cylindrical form in accordance with the EN ISO
228-1 standard and are not sealing the thread. It requires a flat
gasket. You can only screw cylindrical male G-threads, into female
G-threads. The G-threads are standard thread on the pump
housing.
R-threads are tapered external threads in accordance with the EN
10226-1 standard.
Rc- or Rp-threads are internal threads with either tapered or
cylindrical threads. You can screw conical male R-threads into
female Rc- or Rp-threads. See fig. G-threads and R-threads.
R
G-threads and R-threads
R
1 1/4 1 1 1/4
529821 529925 529924
99672033
Rp
G
5.5.2 Insulating shells
The accessory set is tailored to the individual pump type. The
insulating shells enclose the entire pump housing and are easy to fit
around the pump.
Pump type
ALPHA1 L XX-XX
Product number
99270706
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