Profile: Daly, LLC, M. J. deals with fire protection and plumbing systems. Our fire protection systems include wet and dry pipe sprinklers, deluge systems, preaction systems, standpipe systems, fire pumps, foam systems, intengen and FM systems, ground water storage tanks and underground fire mains. Our services include sprinkler design, installation & service, mechanical design, installation & service, plumbing, heating, air conditioning, design, and fabrication & installation of piping systems.