Watts VB25/32 Series, Installation And Operating Manual, Page: 4 / 10

EN
4 VB25-32-IM-DE-W-UK-05-2023-Rev.1 | Part no. 10025989
3 Technical data
Hydraulic performance data VB25/32-2 VB25/32-3 VB25/32-4 VB25/32-5
Max. operating pressure 6 bar
Operating temperature 2 °C to 110 °C
Media Water / water-glycol mixtures according to VDI 2035/ÖNORM H 5195
Dimensions
Width x height x depth
with EPP shell
600 x 178 x 137 mm 900 x 178 x 137 mm 1200 x 178 x 137 mm 1500 x 178 x 137 mm
Width x height x depth
without EPP shell
510 x 157 x 80 mm 810 x 157 x 80 mm 1110 x 157 x 80 mm 1410 x 157 x 80 mm
Total weight
excluding packaging 5.6 kg 8.4 kg 12.4 kg 16.5 kg
including packaging 5.9 kg 8.8 kg 13.2 kg 17.4 kg
Connections to pipe net-
work
Heating circuit G 1 ½ union nut, flat sealing
Boiler circuit G 1 ½ male connection. flat sealing
Nominal diameter DN 32
Materials
Manifold tubular steel
Union nut brass CW617N
End cap brass CW617N
Flat seal AFM 34/2
Insulation EPP
Flow coefficient (Cv) values
1 outlet open 15.2 m³/h 13.8 m³/h 14.8 m³/h 12.3 m³/h
2 outlets open 20.1 m³/h 19.1 m³/h 21.2 m³/h 19.3 m³/h
3 outlets open - 20.6 m³/h 24.0 m³/h 21.8 m³/h
4 outlets open - - 24.1 m³/h 23.0 m³/h
5 outlets open - - - 23.5 m³/h