upright quick VK531 k11
The Viking Quick Response Extra-Large Orifice Upright Sprinkler VK531 is a thermosensitive
glass bulb spray sprinkler available in several different finishes and
temperature ratings to meet design requirements. The special Polyester, Electroless
Nickel PTFE (ENT), and PTFE coatings can be used in decorative applications where
colors are desired. In addition, these coatings have been investigated for installation
in corrosive environments and are listed/approved as indicated in the Approval
Charts.
The extra-large orifice provides greater flows at lower pressures than standard
orifice or large orifice sprinklers. This feature allows reduced pipe sizing for hydraulically
calculated sprinkler systems, which require high densities of water.
Viking Standard 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.
Viking Quick Response Extra-Large Orifice Upright Sprinkler VK531 may be
ordered and/or used as an open sprinkler (glass bulb and pip cap assembly removed)
on deluge systems. Refer to Ordering Instructions below.
