Often referred to as a “fire valve.” Used to shut
off flow in the event of fire. Fusible link holds
open spring actuated lever. Body mounts at the
base of an aboveground tank with poppet end
projecting inside the tank, thus the designation “internal.”
272 Options/Description (212° Fuse Link Standard)
272HO…brass body and brass internals, Viton® o-ring.
Threaded mounting connection. Teflon® fitted available
(Viton® encapsulated Teflon® o-ring and Teflon® packing).
as 272HO, but with shear section
machined in body.