Cast iron gate block f115 is designed to adjust the intensity of combustion by changing the level of draft in the chimney. Has a handle for controlling the valve with the ability to exit to the furnace room. Allows you to keep heat in the furnace after the cessation of active combustion and to increase the service life of the chimney. It is installed on the starting cast-iron Gefest pipes with a length of 500 mm. Further, the first element of the chimney system is installed on the branch pipe of the gate block, such as a start-transition or a boiler adapter.
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