Andrew Duffy, a lawyer with the Mongeluzzi firm, which represents the Malloy family, said that when investigators went through the home after the fire, they inspected the large, wheel-like valve that controlled the most extensive portion of the facility's sprinkler system. It was closed. If it was shut before the fire, no water would have been available to the 365 sprinklers that covered the basement and the first and second floors of the personal-care section.