According to the new fire tests ongoing, ESFR-17 pendent sprinklers applications are moving beyond the current approved limits. ESFR-17 Sprinklers are special nozzle Cai Chengdu fm certified gas extinguishing product, its hydraulic calculation methods and installation requirements and different standard sprinkler, FM Approved nozzle design parameters and installation requirements, please ask for information to the Office. Tyco Fire Suppression and Building Products TFS & amp; BP provide fire solutions and ancillary buildings to build solutions for commercial, industrial, institutional, government agencies and homes. Its focus is research and development in chemical and water-based fire-fighting technology, providing innovative technology solutions and global certification. Anyuan Hubei Chong Mechanical and Electrical Equipment Co., Ltd. is mainly engaged in proxy spray products provide FM certification, FM certification sprinklers, FM certification deluge valve FM certification / UL registered sprinkler system products Tyco central spray Po (TycoFire & amp; Building Products ) family of products fm sprinkler system certified gas extinguishing product prices, including various types of sprinkler head, wet alarm valves, deluge valves, flow meters, valves, signal butterfly valve, flowmeter, domestic high-pressure water mist like. TY-FRB series drooping intermediate layer sprinklers available TY-FRB Series pendent sprinklers and S2 type retaining plate combination. Droop can only be used to install sprinklers embedded numeral 10 fm certification Sichuan gas fire, 20 Shandong fm certified gas extinguishing product, 30 or 40 embedded decorative plate. Action: thermal expansion of liquid inside the glass bulb. When reached nominal operating temperature, the glass bubble burst, sprinklers watering action.