- Trademark: welfare
- Origin: Zhejiang, China
Be used in whole fire water sprinkler system, and installed branch fire pipe, from top floor to the base room, every floor need one water following indicator.
How to working
When the water in side pipe following rate exceed 15L/Min, the leaf of the water flowing switch will closed by impacted water. And output one fire singal. In this way warning, test and alarm fire situation.
Working pressure 1.2Mpa
Retarding time 2-90S
Contact point AC 220 3A, DC 24V1A, close and open on pair each
We have thread, sadde type, welded type size from 50mm to 100MM