Leak detection and prevention device

A fluid flow prevention device comprising:

• a flow pipe member having a first end connected to a source of fluid having a pressure higher than ambient air pressure around said flow pipe member, said flow pipe member being tubular in construction, having an inner bore and an outer diameter when viewed from an end, said flow pipe member directing said pressurized fluid from said source of pressurized fluid to a second end of said flow pipe member, said second end of said flow pipe member having a tapered shape having a smaller exit aperture than said inner bore;
• a flow stopping apparatus, for stopping the flow of said pressurized fluid through said flow pipe member, said flow pipe member having an outrigger pipe, said outrigger pipe being tubular and having an internal bore and an outside diameter, a first end connected to a sidewall of said flow pipe member so that said inner bores of said flow pipe member and said inner bore of said outrigger pipe are in fluid communication with each other, a second end of said outrigger pipe being closed to prevent fluid flow therethrough, a ball member positioned within said outrigger pipe, said ball member including a sufficient amount of iron to be attracted to magnetic forces, said ball member having a first position at said second end of said outrigger pipe for allowing said pressurized fluid to pass through said flow pipe member, said ball member being positioned at said second end of said outrigger pipe by a permanent magnetic retention member positioned outside said second end of said outrigger pipe, said ball member having a second position whereby an outer surface of said ball member positioned adjacent said tapered portion of said flow pipe member for stopping the flow of said pressurized fluid through said flow pipe member, said ball member held in position adjacent said frustoconical portion of said flow pipe by said pressurized fluid;
• a flow detecting apparatus for detecting flow through said flow pipe member, said flow detecting apparatus including a link member constructed and arranged to move said magnetic member away from said second end of said outrigger pipe so that upon detection of a leaked fluid said ball member is released into said pressurized fluid flowing through said flow pipe member, the link member including at least two links coupled together to provide an adjustable length.