The Viking Model VK696 Attic Sprinkler is UL Listed for both wet and dry pipe systems for use in combustible and non-combustible sloped attic spaces, and can be installed with steel or CPVC piping. (CPVC is allowed on wet pipe systems only.) When used with Viking's Model V-BB (Back to Back) and V-SD (Single Directional) Attic sprinklers, it is possible to utilize a single line of piping at the attic peak, eliminating the need for branch lines and greatly reducing the number of required sprinklers and associated materials. Installed in the upright position, with the deflector parallel to the roof, the VK696 is used in combination with either the Model BB or Model SD to increase the allowable span from 60 ft up to 80 ft (max.).  The Model V696 is a glass bulb design with a temperature rating of 200° F, and is offered in either standard brass or ENT plating for areas subject to corrosion. (Note: The Model VK696 is covered by the following U.S. Patent No.: 8,083,002 owned by Tyco)