Potter WLS Tank Water Level Switch

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The Model WLS Water Level Switch is a float operated device for supervising water level in a sprinkler supply gravity or pressure tank. The Model WLS has a bushing with 1 1/2” Am erican Standard Pipe Threads for mounting in steel tanks. A 11/2” NPT x 2” NPT adapter bushing is available for mounting in existing 2” steel flanges. An optional bushing adapter with a buttress thread is available for mounting in wooden tanks. The unit is capable of detecting the level of water before a 3” (7,6cm) rise and/or a 3” (7,6cm) fall in the water level in a pressure tank, as required for NFPA 72. The cover is held in place with two tamper resistant screws (provided), which require a special key for removal Main Features NEMA 4 Suitable for use on pressure or gravity switches Mounts to wood or steel tanks NOTE: Wood tanks require optional buttress adapter Product includes a 5 year warranty Show more