A sprinkler adapter includes a first pipe receiver, a second pipe receiver, a channel, a first sprinkler port, and a second sprinkler port. The first pipe receiver couples with a first pipe. The second pipe receiver couples with a second pipe. The channel extends between the first pipe receiver and the second pipe receiver along a pipe axis. The first sprinkler port is fluidly coupled with the channel, couples with a first sprinkler, and defines a first port axis spaced from the pipe axis. The second sprinkler port is fluidly coupled with the channel, couples with a second sprinkler, and defines a second port axis spaced from the first port axis and the pipe axis.