DEVELOPMENT OF THE B-D BLAST-CLOSURE VALVE,
Abstract
The Bayles-Denny Valve was designed as a low cost blast-actuated closure device for shelter air system openings. It uses an arrangement of pressure plates and compressible plastic foam to close off the air pipe when struck by a pressure wave. Several experimental combinations of plates and plastic were tested for air flow and filtration characteristics for normal ventilating use and for blast closure effectiveness. The tests indicated that the valve performance varied greatly with changes in the pore size of the plastic media. Small-pore media restricted the air flow excessively. Large-pore media gave a more useful degree of filtration and better air flow characteristics, but decreased the blast wave attenuation. All configurations reduced the shock wave to a gradual pressure rise. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 16, 1963
- Accession Number
- AD0428044
Entities
People
- J. J. Bayles
Organizations
- Naval Facilities Engineering Service Center