Extended coverage dry pendent storage sprinkler for a storage freezer

An extended coverage dry pendent storage sprinkler for a storage freezer, the storage freezer having a top and a freezing environment within the storage freezer, the extended coverage dry pendent sprinkler penetrating through the top of the freezer into the freezing environment, and comprising:

• (A) a casing tube having an inlet at a first end, the inlet defining an inlet orifice, and an outlet at a second end, the outlet defining an outlet orifice, the casing tube defining a liquid passage and a sprinkler axis from the inlet to the outlet;
• (B) an inlet seal assembly configured to operatively seal the inlet orifice when the sprinkler is in a non-actuated state;
• (C) an outlet seat assembly configured to operatively seal the outlet orifice when the sprinkler is in the non-actuated state;
• (D) a translating member extending between the inlet and the outlet through the casing tube, the translating member including a proximal pin at the inlet end of the casing tube and a distal pin at the outlet end of the casing tube, and the translating member (i) supporting the inlet seal assembly by the proximal pin to seal the inlet orifice, (ii) being supported by the outlet seat assembly, and (iii) being configured to axially translate from a first position, in which the translating member is supported by the outlet seat assembly and retains the inlet seal assembly in a sealed state, to a second position, in which the translating member is not supported by the outlet seat assembly and releases the inlet seal assembly, toward the outlet when the outlet seat assembly is released, upon actuation of the dry pendent storage sprinkler;
• (E) an inlet support adjacent to the inlet orifice at the inlet of the casing tube, the inlet support extending from the translating member to the casing tube to support the translating member when the sprinkler is in a non-actuated state, wherein the inlet support is a yoke formed by several rods, each rod having one end secured to the translating member and an opposite end projecting at an outward angle away from the translating member towards the casing tube;
• and
• (F) an outlet support adjacent to the outlet orifice along an axis that is perpendicular to a longitudinal axis of the translating member and supporting the translating member when the sprinkler is in the non-actuated state,
• wherein a difference between an internal cross-sectional area of the casing tube and a cross-sectional area bounded by an outer perimeter of the translating member is more than thirty percent of the internal cross-sectional area of the casing tube,
• wherein the translating member has a constant outer diameter between the inlet support and the outlet support and a cross-sectional area that occupies at least two percent of, and not more than sixty-five percent of, an internal cross-sectional area of the casing tube, and
• wherein the inlet orifice and the outlet orifice communicate with a volume interior of the casing tube and an exterior of the translating member.