Grundfos ALPHA2 Series - 12 Accessories; Insulating Shells; Unions and Valve Kits

English (GB)
30
12. Accessories
12.1 Unions and valve kits
* When ordering for UK versions, use product numbers for 25-xx (G 1 1/2).
● Available on request.
G-threads have a cylindrical form in accordance with the EN-ISO
228-1 standard. R-threads have a conical form in accordance
with the ISO 7-1 standard. In the case of a thread of size 1 1/2",
the threads are specified as G 1 1/2 or R 1 1/2. You can only
screw male G-threads (cylindrical) into female G-threads. You
can screw male R-threads (conical) into female G- or R-threads.
See fig. 42.
Fig. 42 G-threads and R-threads
12.2 Insulating shells
The pump is supplied with two insulating shells. Type A pumps
with air-separating chamber are not supplied with insulating
shells. However, you can order insulating shells as an accessory.
See table below.
The insulation thickness of the insulating shells corresponds to
the nominal diameter of the pump.
The insulating shells, which are tailored to the individual pump
type, enclose the entire pump housing. The insulating shells are
easy to fit around the pump. See fig. 43.
Fig. 43 Insulating shells
Product numbers, unions
ALPHAx Connection
3/4 1 1 1/4 1 1 1/4 3/4 1 1 1/4 ∅22 ∅28 ∅15 ∅18 ∅22 ∅28 ∅42
15-xx*
G 1
15-xx N*
25-xx
G 1 1/2
529921 529922 529821 529925 529924
25-xx N 529971 529972 519805 519806 505539 519808 519809 529977 529978 529979
32-xx
G 2
509921 509922
32-xx N 509971 ● 529995
Rp
R
Rp
mm
mm
TM06 5867 0216
R
Rp
Rc
G
Pump type Product number Available
ALPHAx XX-XX 130 98091786 spare part
ALPHAx XX-XX 180 98091787 spare part
ALPHAx XX-XX A 505822 accessory
TM06 5822 0216