Saturday, March 23, 2019

Dry System: Technical Manual for Operation, Maintenance and Troubleshooting

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The Dry Pipe Sprinkler System is a fire-protection system that utilizes water as an extinguishing agent, while the system piping from the Dry Pipe Valve to the automatic fusible sprinklers is filled with pressurized air or nitrogen. Dry pipe systems should be installed only where heat is not adequate to prevent freezing of water in all parts of, or in sections of, the system. Air pressure must be lost from the system to trip the valve. Then water must travel through the piping network to the sprinklers (refer to Figures 1a and 1b).

1. System Description
2. System Components & Requirements
3. System Operation
4. Placing The System in Service
5. Normal Conditions
6. Abnormal Conditions
7. Inspections, Tests, and Maintenance
Appendix A: Rules of Thumb-Dry System Design and Water Delivery
Appendix B: Sizing air Compressors

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