Resilient seated gate valve without suspension of water supply

摘要

The present invention relates to a branching soft seal control valve and, more specifically, to a branching soft seal control valve capable of preventing a disc from being pushed by water pressure while supporting a part of the disc, which is inserted into an underground pipe to block a flow path of the underground pipe, on the inner edge surface of the underground pipe. To achieve the purpose, the branching soft seal control valve includes: first and second T-type pipes combined while surrounding an underground pipe; first and second gaskets installed between the underground pipe and the first and second T-type pipes; and a valve structure comprising a valve housing assembled with the first T-type pipe a valve rod assembled with the valve housing and a disc assembled with the valve rod. The disc comprises: a disc sheet combined with the valve rod and forming a frame structure of the disc; and an elastic body surrounding a part or the whole of the disc sheet. The bottom of the elastic body attached to the inner edge surface of the underground pipe is formed in a polygonal structure to enable the disc to be supported by the underground pipe as a corner part of the polygon preferentially comes into contact with the inner edge surface of the underground pipe. A first elastic support part having a trapezoid shape, of which upper part is wider than its lower part, is formed in the bottom of the disc sheet. Saw-toothed uneven parts accumulating elastic energy when the elastic body is compressed are formed on both lateral sides of the first elastic support part.