English (GB)
25
11. Accessories
11.1 Unions
Note: The product numbers are always for one complete set, incl.
gaskets.
The product numbers for the very standard sizes are printed in
bold.
When ordering for UK 15-xx versions, use product numbers for
25-xx (G 1 1/2).
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 male G-threads (cylindrical) 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
10226-2 standard.
Rc- or Rp-threads are internal threads with either tapered or
cylindrical (parallel) threads. You can screw male R-threads
(conical) into female Rc- or Rp-threads. See fig. 31.
Fig. 31 Examples of thread types and combinations
Product numbers, unions
Union nut with internal
threads
Union nut with
external threads
Ball valve with internal
threads
Ball valve with
compression
fitting
Union nut with soldering fitting
ALPHA1
Connection
3/4 1 1 1/4 1 1 1/4 3/4 1 1 1/4 ∅22 ∅28 ∅18 ∅22 ∅28 ∅42
25-xx
G 1 1/2
529921 529922 529821 529925 529924
25-xx N 529971 529972 519805 519806 519807 519808 519809 529977 529978 529979
32-xx
G 2
509921 509922
32-xx N 509971 529995
R
TM07 0321 4817
To Next Page
Loading...
Need help?
General
