VK469 - QR ELO Concealed Pendent Sprinkler (K11.2)
Viking Mirage® Quick Response ELO Concealed Pendent Sprinkler SIN VK469 is a thermosensitive solder link spray sprinkler designed for installation on concealed pipe systems where the appearance of a smooth ceiling is desired.
The sprinkler is preassembled with a threaded adapter for installation with a low profile cover assembly that provides up to ½” (13 mm) of vertical adjustment. The two-piece design allows installation and testing of the sprinkler prior to installation of the cover plate. The “push-on” and “thread-on” designs of the concealed cover plate assemblies allow easy installation of the cover plate after the system has been tested and the ceiling finish has been applied. The cover assembly can be removed and reinstalled, allowing temporary removal of ceiling panels without taking the sprinkler system out of service or removing the sprinkler. The Electroless Nickel PTFE (ENT) coating has been investigated for installation in corrosive environments and is listed and approved as indicated in the Approval Charts. The ENT finish is only available for the sprinkler assembly, the cover plate is not plated.
The extra-large orifice provides greater flows at lower pressures than standard orifice or large orifice sprinklers. This feature allows higher densities of water to be applied when limited water pressure is available. Viking Quick Response Extra-Large Orifice Sprinklers may eliminate the need for a fire pump or reduce the size of the pump if it is required. On existing systems, replacing large orifice sprinklers with extra-large orifice sprinklers may provide the higher densities required to allow an increase in the hazard classification of an occupancy.