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Descrição
Foam Maker is an air-aspirating foam release device meant to safeguard flammable liquid storage tanks on floating roofs. It can also be used to safeguard diked flammable liquid storage and spill sites. The main design parameters for foam systems are based on the NFPA11 standard. NFPA 11 defines Foam Makers as Type II discharge outlets for providing low expansion aspirated foam to the seal.
Specification
1.Foam maker covers wide range of foam solution rates from 75 to 557 litres per minute at 2.8 to 7 kg/sq.cm. inlet pressure. The orifice is field replaceable in the event of change in design parameters. The foam is produced by introducing air into the foam solution stream. The inlet of foam maker is designed to create venture jet which draws air into the foam solution stream.
2.The air is drawn into the foam solution through holes located on the foam maker covered with stainless steel screen to exclude nesting birds and insects.
3.The aerated foam is directed into the pourer for the gentle application of the expanded foam. The pourers are available in different models.*
2.The air is drawn into the foam solution through holes located on the foam maker covered with stainless steel screen to exclude nesting birds and insects.
3.The aerated foam is directed into the pourer for the gentle application of the expanded foam. The pourers are available in different models.*
4.Refer to UL/FM directory for specific foam concentrate along with working pressure and flow details.
Aplicação
Foam Maker is used for one of the most common applications of protecting tank seal in vertical liquid storage tank with internal floating roof with low expansion foam system. The application of aspirated foam is on the basis of the risk comprising the area in the annular ring between the rim of the floating roof and the tank shell. The Foam system design guidelines generally used are in accordance with NFPA 11 standard.
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