Accession Number:

AD0402934

Title:

A VACUUM PNEUMATIC PROCESS FOR FILLING LARGE DRY CHEMICAL FIRE EXTINGUISHERS

Descriptive Note:

Final rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Report Date:

1963-04-01

Pagination or Media Count:

18.0

Abstract:

A pneumatic conveying system was developed for filling large fire extinguishers with dry chemical powder. The system is intended particularly for air stations and similar field establishments it could even be used for reloading extinguishers at the site of a fire. The essential components are a 1-12 horsepower vacuum cleaner and an especially designed device which is used in place of the extinguisher fill cap which separates the powder from the air stream, and also provides entry for a powder level gage stick. In trials at the Laboratory this system reduced the filling time for a 400-lb. capacity dry chemical air lift extinguisher from 46 to 6 minutes, reduced dusting to a negligible amount, and allowed correct gaging of adequate charge amounts.

Subject Categories:

  • Safety Engineering

Distribution Statement:

APPROVED FOR PUBLIC RELEASE