Temporary protective device for fire protection sprinklers

A protective cap for housing a fire protection sprinkler assembly having a trigger assembly and an escutcheon plate with a peripheral surface, the protective cap comprising:

• an open receiver end portion defined by a plurality of gription segments angularly spaced apart about a central longitudinal axis to engage and partially circumscribe the peripheral surface of the escutcheon plate;
• a closed terminal end portion opposite and axially spaced from the open receiver end portion along the central longitudinal axis;
• and
• an aerosol shield extending between the open receiver end portion and the closed terminal end portion, the aerosol shield being centered about the central longitudinal axis to define an internal chamber for housing the fire protection sprinkler assembly, the aerosol shield including at least one solid connecting portion extending along the central longitudinal axis from the open receiver end portion to the closed terminal end portion and at least partially circumscribed about the central longitudinal axis, at least one louver channel extending along the at least one solid connecting portion and disposed from the central longitudinal axis at a radial distance less than the at least one solid connecting portion, and a plurality of louvers extending across the at least one louver channel to form a plurality of shielded openings transverse to the central longitudinal axis for gas communication with the internal chamber to operate the trigger assembly.