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Fast Response Upright Sprinkler Head

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K FACTOR：K 25@ US（363@Metric） Thread Size：DN25(1'') Connecting Thread: BSP (NPT Optional) Main Material: Brass Sensitive Element: Fusible Alloy Seal Material: NBR Surface Finishing : Chrome (Natural Brass Optional).

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Detailed introduction

K=25 (363) ESFR SPRINKLERS
Model ESFR 363/74°C P Pendent Sprinklers are Early Suppression, Fast Response (ESFR) sprinklers having a nominal K-factor of 25.2.They are suppression-mode sprinklers that are especially advantageous as a means of eliminating the use of in-rack sprinklers when protecting high-piled storage. The Model ESFR 363/74°C P Sprinklers are primarily used for ceiling-only sprinkler protection of (but not limited to) the following storage applications: • most encapsulated or non-encapsulated common materials including cartoned, unexpanded plastics. • some storage arrangements of rubber tires, roll paper, flammable liquids, aerosols, and automotive components.

Structure

The early suppression and quick response nozzle is mainly composed of frame, sealing element, ball seat, spring, action mechanism, fusible alloy sheet, screw, splash plate, etc.; the nozzle uses welded fusible element as the action element, and is composed of two identical connections The parts are connected through the welding layer of the fusible element. When the action temperature is reached, the welding layer melts, the connecting parts are separated, and the nozzle starts to spray water to extinguish the fire.

Specification