5.5 Accessories
5.5.1 Unions and valve kits
Product numbers, unions
ALPHAx
Connection
Rp
R
3/4
1
1 1/4
1
1 1/4
25-xx G 1 1/2
529921
99672022
529821
529925
529924
32-xx
G 2
509921
99672033
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
Rp
G
TM077425
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.
Pump type
Product number
ALPHA1 L XX-XX
99270706
13
English (GB)