Viking QREC Fusible Element Pendent Sprinkler VK603 is a thermosensitive solder link spray sprinkler available in several different finishes and temperature ratings to meet varying design requirements. The fusible operating element and special deflector characteristics meet the challenges of quick response extended coverage standards. The special Polyester coatings can be used in decorative applications where colors are desired.  Please refer to technical data sheet for required design and installation criteria.