This model is a Sprinkler Head to fix the inner part of duct to put out fire that can be occurred during the flow of volatile gas, hydrochloric acid or nitric acid gas in a semiconductor factory through duct. The product prevents corrosion of Sprinkler Head due to high hydrochloric acid/nitric acid gas and inflow of gas in the duct. The Model has a 8-layer special gas intercept apparatus to prevent inflow of gas in the duct. This product is approved by F.M.

The product is rounded Flange type of YB28 (D-B) Model and it is designed for easy and fast installation to the Duct. In addition, the product uses union type fastening Nut coupled to the both ends of the flexible joint to connect it to the Main pipe and Mounting Block in narrow space in order to improve hard installation of traditional product. this Model has 8-layer special gas intercept apparatus to prevent inflow of gas in duct. This product is approved by F.M.