Tyco's Model RM-1 Riser Manifold features a proprietary connection between the manifold and the Potter alarm switch. The connection has a watertight, flat surface design that helps prevent leaks. Other features of the RM-1 Riser Manifold include a pressure gauge, alarm test orifice, drain, and sight glass housed in a single assembly for use in NFPA 13 commercial sprinkler systems and in NFPA 13D/13R residential sprinkler systems. With a maximum working pressure of 300 psi, the Model RM-1 Riser Manifold may be installed either in a horizontal or vertical orientation, for both single sprinkler rises and floor control in high-rises. It is UL, ULC listed and FM approved.