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The FireLock IGS Style V9 Sprinkler Coupling and line of FireLock IGS grooved sprinklers are an UL-listed and FM-approved Installation-Ready sprinkler. The product was created to replace threads on both outlets and sprinklers. The coupling has one-bolt to allow the fitter to use a power tool to save both wear and tear on their body. It is captured onto sprinklers with a connection size of ½-inch, ¾-inch or 1-inch, and transitions to 1-inch for the standardization of 1-inch IGS outlets.
The sprinkler and coupling arrive on site pre-assembled.