Pneumatic actuator installs on the top of DJ/Deist Coldfire bottles with a 1.250" hex surface. Actuator is plumbed three spots with 1/8" NPT threads to allow pressure to the actuator piston up top and two ports on the sides of the hex to allow fire extinguishing agent out to Coldfire nozzles. Pneumatic head is great for a two bottle twenty pound system.
Actuator head is made from billet alum. measures 3.650" tall not including the top fitting and is 1.375" in diameter.