The VK510, 165 °F (74 °C), Brass ESFR sprinkler with torque-assist caps incorporates the capability to suppress specific high-challenge fires. The addition of a larger K-Factor allows ESFR performance at lower end-head pressures than ESFR K14 sprinklers. K25.2 ESFR sprinklers can:
  -Eliminate the use of in-rack sprinklers when protecting high-piled storage of certain specified materials up to specific heights.
  -Reduce or eliminate the need for a system fire pump.
  -Provide flexibility when sizing system piping.

The VK510 is compatible with revolutionary InstaSeal® technology through the addition of new Torque-Assist caps. Make sure to look for the compatibility icon to ensure the correct sprinklers are being ordered for a job requiring InstaSeal technology.