Burkert 2657 Instructions De Service page 18

7.3.1. Wall attachment 2-way model
→
Attach the plastic ball valve to the wall.
• M4 for DN 10 ... 25
• M6 for DN 32 ... 50
Fig. 8: Mounting plate
18
Mounting plate
english
Type 2657
Installation
7.3.2. attachment 3-way model
→
The 3-way model can be attached to a substructure with standard
bolts and nuts
a
Fig. 9: Dimensions for the attachment
Orifice width dimension a
of ball valve
10/15/20/25 20
32/40/50 30
J
a
dimension a J (nut)
31 M5
50 M6