Dry horizontal sidewall fire protection sprinkler for residential fire protection

An automatic residential dry horizontal sidewall sprinkler assembly comprising:

• a tubular outer housing having a first end and a second end opposite the first end with an internal conduit extending from the first end to the second end along a central longitudinal sprinkler axis, the first end defining a fluid intake end of the sprinkler assembly having an inlet opening and an internal sealing surface proximate the inlet opening, the second end defining a fluid discharge end of the sprinkler assembly having an outlet opening;
• a fluid control assembly disposed coaxially within the internal conduit of the outer housing defining a nominal K-factor ranging from 4.0 [GPM/(psi)1/2] to 14.0 [GPM/(psi)1/2];
• a horizontal fluid deflection member affixed to the outer housing at a fixed distance from the outlet opening;
• and
• a thermally responsive trigger seated at a fixed distance from the outlet between the outlet and the horizontal fluid deflection member to define an unactuated state of the sprinkler assembly with the fluid control assembly seated against the thermally responsive trigger to locate the fluid flow assembly in a fluid tight sealed engagement with the sealing surface, the trigger having a nominal operating temperature of up to 200° F. and a thermal response defining an actuated state of the sprinkler assembly wherein the fluid control assembly axially translates out of sealed engagement with the sealing surface and provide a plurality of sprinkler coverage areas suitable for residential fire protection performance;
• each coverage area being defined by a minimum operating pressure of firefighting fluid delivered to the inlet opening and a minimum fluid flow from the outlet opening, the coverage areas ranging from (12 ft.×12 ft) to (16 ft.×20 ft) for the nominal operating temperature.