| 摘要 |
PURPOSE: A hot water header for a boiler is provided to prevent water leakage with a rubber packing even in different thermal expansion ratios of a plastic header and a metal valve by setting the rubber packing between an air vent of the hot water header and the valve. CONSTITUTION: A hot water header consists of: a header(10) having a nut(22) formed by insert injection molding and a connector(20) forming a support protrusion(21) at the front end; a connecting member(30) coupled with the nut, having an attaching piece(31) corresponding to the support protrusion; and a rubber packing(40) formed between the support protrusion and the attaching piece. Plural connectors are formed on a header body to generate a connecting force for the metal connecting member. The connector has an air vent(23) and plural discharge ports(25) on the upper and the lower portion of the header body. The connecting member has a switch valve and an air discharge valve for controlling the circulation of hot water. The rubber packing prevents water leakage when the connecting member is coupled to the nut.
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