User Manual

ManualsBrandsSiemens ManualsRotary actuators (BC6)2-port ball valves, flanged connections, PN25, VAF51..

120

ACVATIX™

2-port ball valves with

flanged connection, PN25

VAF51..

• Gray cast iron EN-GJL-250 (HT250) valve body

• DN 65...150

• k

63...360 m

• Angle of rotation 90°

• Flange connection to ISO 7005-2

• Used with rotary actuators GBB..1E and GIB..1E without spring return

Use

For use in heating, ventilating and air conditioning systems as a control or shutoff

valve.

For closed circuits of cooling water (Please refer to Cavitation on page 4).

CB1N4120en_02

10.05.2016

Building Technologies

Summary of content (8 pages)

PAGE 1
s 4 120 ACVATIX™ 2-port ball valves with flanged connection, PN25 • • • • • • VAF51.. Gray cast iron EN-GJL-250 (HT250) valve body DN 65...150 3 kvs 63...360 m /h Angle of rotation 90° Flange connection to ISO 7005-2 Used with rotary actuators GBB..1E and GIB..1E without spring return Use For use in heating, ventilating and air conditioning systems as a control or shutoff valve. For closed circuits of cooling water (Please refer to Cavitation on page 4). CB1N4120en_02 10.05.
PAGE 2
Type summary Product number Type VAF51.65-63 VAF51.80-100 VAF51.100-160 VAF51.125-200 VAF51.
PAGE 3
Equipment combinations Actuators GBB..1E ∆pmax Ball valves VAF51.65-63 VAF51.80-100 VAF51.100-160 VAF51.125-200 VAF51.150-360 GIB..1E ∆ps ∆pmax 2*GIB..1E ∆ps ∆pmax ∆ps 400 400 [kPa] 400 400 400 400 400 300 400 300 ∆pmax = Maximum permissible differential pressure across valve’s control path, valid for the entire actuating range of the motorized valve.
PAGE 4
Sizing Flow diagram ∆pmax = Maximum permissible differential pressure across the valve, valid for the entire actuating range of the motorized valve. For low noise operation we recommend a maximum permissible differential pressure of 240 kPa ∆pv100 = Differential pressure across the fully open valve and the valve’s control path by a volume flow V100 V 100 = Volumetric flow through the fully open valve 100 kPa = 1 bar ≈ 10 mWC 1 m3/h = 0.
PAGE 5
Note on chilled water To avoid cavitation in chilled water circuits, please ensure sufficient counter pressure at valve outlet, e.g. by a throttling valve after the heat exchanger. Select the pressure drop across the valve at maximum according to the 80 °C curve in the flow diagram below.
PAGE 6
Mounting Both ball valve VAF51.. and rotary actuator GIB..1E or GBB..1E can easily be assembled on site. Normal tools and adjustment are required. The valve is supplied with Mounting Instructions CB1M4120en (74 319 0730 a). Orientation Direction flow Commissioning Pay attention to the valve's flow direction symbol  during mounting. Commission the ball valve only if the rotary actuator has been mounted correctly.
PAGE 7
Technical data Ball valve Functional data PN class Working pressure Flow characteristic Leakage rate Permissible media Materials Dimension / weight Norms and standards PN 25 to ISO 7268 To ISO 7005 within the permissible “medium temperature ” range according to the diagram on page 5 equal percentage; ngl = 3.0 to VDI / VDE 2173 (modified) 0…0.
PAGE 8
Type DN L L1 D D2 D4 D5 ø ø ø ø K H H1 H2 kg [kg] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] [mm] VAF51.65-63 65 190 205 185 18 120 82 145 184 300 17 VAF51.80-100 80 190 205 200 18 136 82 160 184 300 18.5 VAF51.100-160 100 230 205 235 23 162 102 190 > 460 194 310 29 VAF51.125-200 125 254 205 270 26 188 125 220 > 470 201 319 41 VAF51.