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This site was last updated on February 15, 2008.

The shutoff was inspired by Mark Rudner's design. It's basically a line-pull shutoff, with the following advantages:

  • the bellcrank is mounted internally, for aerodynamic cleanliness,
  • the fuel line is external, for easy access and to keep the fuel away from the foam, and
  • the pinchoff is quite close to the sprinkler, for quick action.

Pictures will appear in due course.