The opening and closing angle of the control valve is 60 ° by changing the area of ​​the window formed by the cylindrical valve disc with the valve seat, as indicated by the opening indication plate above the valve. Can be equipped with electric actuators, the implementation of remote automatic operation Water supply rotary valve Suitable for medium and low pressure boiler feed pipe and high pressure heater drain pipe, in order to achieve the purpose of regulating the flow.
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