| 摘要 |
The dosed mixing device allows a dosed quantity of a foam medium to be added to the water fed along a water line (31) supplying the sprinklers (10) in dependence on the flow-rate of the water.A volumetric pump is used as the mixing pump (17) for addition of the foam medium to the water, its rotation rate determined by the measured flow-rate of the water and/or the flow-rate at the output of the mixing pump
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