This Orbit 57181 1 Port Manifold extension is heavy duty. No tools are needs for this valve manifold assembly, just simply hand-tighten the fittings to the sprinkler valve. It can extend a 2-valve manifold into a 3-valve manifold easily. With durable, UV-resistant construction that can withstand high impacts, this Orbit valve manifold is ideal for any garden watering system. It features watertight O-rings at all connections so it will not leak. This is a simple control valve manifold that connects easily for immediate use and hassle-free lawn watering. A 1-inch swivel adapter is needed for connecting the Orbit 57181 manifold extension to a female-threaded valve manifold. Features and Benefits: Has a single port ideal for smaller automatic water sprinkling systems, No tools are required for installation, Has watertight O-rings at every connection, Extends manifolds to give multiple ports for more efficient and effective garden watering.