Grundfos ALPHA1 L - Insulating the Pump Housing

English (GB)
9
5.5 Accessories
5.5.1 Unions and valve kits
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. 9.
Fig. 9 G-threads and R-threads
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.
Product numbers, unions
ALPHAx Connection
3/4 1 1 1/4 1 1 1/4
25-xx G 1 1/2 529921 529922 529821 529925 529924
32-xx G 2 509921 99672033
TM07 7425
Rp
R
R
Rp
G
Pump type Product number
ALPHA1 L XX-XX 99270706