Globe Sprinkler 491015503 - White Polyester Residential Pendant Sprinkler Head - 155°F (4.9 K-Factor) - Note: This product should be used in stand-alone Fire Protection systems only. It is not lead free, and should not be in contact with the potable water supply. The Globe Model GL4110 and GL 4910 residential sprinklers have a low profile yet durable design which utilize a 3mm frangible glass ampure as the thermosensitive element. They feature economy, aesthetics and low flow. The combination of the 3mm frangible glass ampule and specially designed deflector make the model GL4100 and GL4910 residential sprinklers the ultimate in life safety and fire control. The heart of globe's model GL4100 and GL4910 sprinklers proven actuating assembly is a hermetically sealed frangible glass ampule that contains a precisely measured amount of fluid. When heat is absorbed, the liquid within the bulb expands increasing the internal pressure. At the prescribed temperature the internal pressure within the ampule exceeds the strength of the glass causing the glass to shatter. This results in water discharge which distributed in an approved pattern. Features: Temperature Rating - 155¡ãF (68¡ãFC) Water working pressure rating - 175 psi (12 bars) Factory tested hydrostatically to 500 psi (34 bars) Maximum low temperature glass bulb rating is -67¡ãF (-55¡ãC) Frame - Bronze, Deflector - brass, Screw - brass Bulb seat - copper, Spring - nickel alloy, Seal - Teflon Bulb - glass with alcohol based solution, 3mm size Escutcheon Assembly - Seal
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