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1. General
Vexve Oy's butterfly valves are high performance, metal seated, triple offset type butterfly valves designed
especially for district heating and district cooling applications. Vexve's high quality butterfly valves with to-
tal bi-directional tightness can be used for shut-off (on/off) and control purposes. Vexve provides models
BFS and BRS for shut-off and models BFC and BRC for control purposes.
Vexve's butterfly valve can be used within the following temperature-pressure range. Please note that the
maximum allowable working pressure is dependent on the operating temperature.
MPa
3
2
BFC / BRC
BFS / BRS
1
0
-40
-10
20
Chart 1. Pressure-temperature chart.
NOTE:
When intending to use the valve for other media or applications please consult Vexve to
ensure its suitability.
The Parts list for Vexve's butterfly valves is presented in Appendix 7.1. and 7.2.
For detailed technical information including dimensions and weights, torques, Kv-values etc please refer
to Vexve's Product catalogue or data sheets (www.vexve.com) for the valve in question.
4
50
80
110
140
170
200
230
260
ºC
Note!
DN 1200–1600 temperature
range -20...+200 °C
The maximum allowable work-
ing pressure is dependent on
the operating temperature
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