With 1-, 2- and 3-port valve manifolds, we can help you expand your existing automatic sprinkler system and provide more efficient garden watering. We also stock adapters in many different sizes to add a single port to an existing sprinkler or to create your own automatic irrigation system. Sprinkler manifolds attach to system valves to provide optimal watering. Make life real easy by purchasing a ready-to-go pre-assembled Orbit 3 in 1 Sprinkler Valve manifold system or a two valve manifold system. Whether you are expanding a lawn watering system you already have or making a do-it-yourself sprinkler system, we have parts you need. The parts we carry are made to be used with and only fit the Orbit Manifold Systems.