2022 wholesale price 3mm 79℃ - Fusible alloy/Sprinkler bulb ESFR sprinkler heads – Zhurong
2022 wholesale price 3mm 79℃ - Fusible alloy/Sprinkler bulb ESFR sprinkler heads – Zhurong Detail:
Model | ESFR-242/74℃ P | ESFR-202/68℃ P | ESFR-202/68℃ U | ESFR-202/74℃ P | ESFR-202/74℃ U | ESFR-242/74℃ U | ESFR-323/74℃ P | ESFR-323/74℃ U | ESFR-363/74℃ P | ESFR-363/74℃ U |
Mounting | Pendent | Upright | Pendent | Upright | Pendent | Upright | Pendent | Upright | Pendent | Upright |
Flow Characteristics | 202 | 202 | 242 | 323 | 363 | |||||
Thread Size | R₂ 3/4 | R₂ 1 | ||||||||
Nominal action temperature | 68℃ | 74℃ | ||||||||
Nominal Working Pressure | 1.2MPa | |||||||||
Factory test pressure | 3.4MPa |
Background – History
In the 1980s, early suppression, fast response (ESFR) sprinkler systems were developed as an alternative to in-rack systems. They were designed to actually suppress or extinguish the fire, while conventional sprinklers can only control fires, therefore eliminating the need for extinguishment by firefighters.
How do they work? ESFR sprinklers are designed to release 2-3 times the amount of water of conventional sprinkler heads and to emit larger droplets of water, which in turn have a greater momentum than droplets emitted from conventional heads. As a result, more water and a greater share of the water reaches the fire allowing the flames to be extinguished.
Application
In general, ESFR systems can be used in warehouses with storage that do not exceed 40 feet in overall height, and with a ceiling height of less than 45 feet. And there are sprinkler system protection schemes that will allow storage above those heights. These may include in-rack sprinklers or a combination of ESFR with in-rack sprinklers.
ESFR systems are designed to protect a wide array of commodities. This provides more flexibility in warehouse operations when compared to control mode (conventional) sprinkler systems, which are designed to protect only the commodities that were stored at the time of system installation. If the storage situation requires in-rack sprinklers to be installed to the existing control mode systems of a warehouse building, often building owners prefer to change over to ESFR, simply because then there is no need to worry about damaging in-rack sprinkler heads during normal storage operations. Additionally, in-rack sprinklers have to be removed and sometimes replaced with each new tenant, since the tenants own the racks. Therefore, converting to an ESFR system is at times more cost-effective in the long run.
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With the Client-Oriented business philosophy, a rigorous quality control system, advanced manufacturing equipment and a strong R&D team, we always provide high quality products, excellent services and competitive prices for 2022 wholesale price 3mm 79℃ - Fusible alloy/Sprinkler bulb ESFR sprinkler heads – Zhurong , The product will supply to all over the world, such as: Oslo, Venezuela, Morocco, After years' creating and developing, with the advantages of trained qualified talents and rich marketing experience, outstanding achievements were gradually made. We get good reputation from the customers due to our good products quality and fine after-sale service. We sincerely wish to create a more prosperous and flourishing future together with all the friends home and abroad!
By Mark from Auckland - 2018.06.30 17:29
We always believe that the details decides the company's product quality, in this respect, the company conform our requirements and the goods are meet our expectations.
By Elma from Stuttgart - 2017.12.02 14:11