Usage Tips:Efficient 68/155 Fire Sprinkler Heads: Crafted from brass, these sprinkler heads feature a thermal red glass bulb that responds swiftly, ensuring rapid water dispersion in the event of a fire, enhancing safety and reliability in various indoor environments.Optimal Water Distribution: Designed as upright type sprinklers, they create a parabolic water pattern. This design ensures 80-100% of water is directed downwards, maximizing ground coverage while a portion ascends to cool the ceiling, providing comprehensive fire suppression.Robust Performance Specifications: Each sprinkler operates at a working pressure of 1.2Mpa and weighs 48g. The package includes 2 pieces, offering a practical solution for both replacement and initial installation in fire safety systems.Standard Compatibility: Featuring a standard 1/2 NPT thread, these fire sprinkler heads a hassle-free installation, making them compatible with most existing fire sprinkler systems, thereby facilitating easy maintenance and upgrades.Versatile Installation Applications: Primarily installed indoors in homes, factories, schools, and offices, these sprinklers are also suitable for agricultural use, providing efficient irrigation for farms and gardens, thus serving dual purposes in fire safety and irrigation.Colour:SilverMaterial:MetalPackage Contents:5 * Fire Sprinkler-HeadsOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.