Fire-fighting foam prodn.

摘要

Compressed air or inert gas is injected into a liq. foaming agent to form a gas-liq. mixt. and sent through a pipe or hose to the outlet from which it is sprayed, already converted into foam. A hollow body or chamber is used, with one inlet for the air or gas under pressure and an outlet connected to the pipe or hose. Leading into this body is a tube connected to the supply of foaming agent, with its outlet positioned to form a venturi. (0/1)