| 摘要 |
An arrangement for a flow valve 24; 52 for a heating system comprising a heating boiler 10, a water heater 11; 46, at least one accumulator tank 14; 45, 49 and at least one circulation pump 25, 26; 53, 54 for filling the accumulator tank with hot water from the boiler, or for tapping hot water off from the accumulator tank. The flow valve 24; 52 comprises a valve housing 27; 55 with a displaceable piston slide 32; 58 which is provided with a sealing surface 34; 60 which, in one end position of the slide, bearing against a seat 35; 61 in the valve housing, closes a first flow path through the valve. A non-return valve 37; 63, which can be opened counter to the action of a spring member, makes it possible to form a second flow path past the seat 35; 61. <IMAGE> |
