Deck drains are manufactured in accordance with NAVSEA drawing 810-1385789. Deck drains are categorized by the nominal size of the pipe to which they connect (1-1/2", 2", 2-1/2" or 3"). Deck drain bodies are supplied in 3 materials: aluminum, bronze, or monel (a 70-30 blend of copper-nickel). Aluminum deck drains use aluminum strainers, valves, baffles and screws. Both bronze and monel deck drains use bronze strainers, bronze valves, copper baffles and monel screws. Condition zebra can be set on Types A, B and G deck drains by use of a T-wrench (PN 789-13).