- 产品描述 ：
- Fire flow tests are conducted on hydrants to determine water availability in planning for firefighting activities, fire sprinkler systems or domestic water demand. The tests are also useful in determining the general condition of the water distribution system by detecting closed valves or wall deposits. A well-maintained water system enables firefighters to extinguish flames and prevent large-scale damage or loss of life. There are two types of fire flow tests.
- Main Capacity Test determines the water supply available in the water main. If you are designing a fire sprinkler system, use this test (residual hydrant separate downstream flow hydrant).
- Hydrant Capacity Test determines the flow-rate available from the hydrant and if it will deliver in a fire emergency situation. If you are performing fire flow tests of hydrants, use this test (residual hydrant and flow hydrant are the same one).
- Both tests are valid and discover valuable engineering information as well as test the integrity of the piping system components. It is important to perform the correct test.
- 产品特点 ：
- How often do I perform Fire Flow Tests on hydrants?
- • AWWA recommends flow testing all areas at least every 10 years. (AWWA M17);
• NFPA requires flow testing of underground and exposed piping at least once every 5 years (NFPA 25, 7.3.1, 2008); - Where do I find more information on fire flow testing?
- • NFPA 291 — Recommended practice for fire flow testing and marking of hydrants;
• AWWA Manual 17 — Installation, field testing, and maintenance of fire hydrants;
• Hydro Flow Products Catalog — Section on Fire Flow Testing includes how-to instructions and more;
• Fire Flow Test Calculator — Calculates the rated capacity at 20 psi for a fire flow test; - 产品认证 ：
- FM , UL
