The 3/4" NPT Transition Adapter connects an Orbit manifold system to 3/4 or 1 In. PVC pipe. The Orbit manifold system is the easiest way to assemble a sprinkler valve manifold. No special tools are required, just hand-tighten the adapter. Manifold fittings are durable and UV resistant. Used to connect 3/4 or 1 In. PVC pipe to an Orbit manifold system Durable UV resistant and high-impact construction Watertight o-rings at all connections No special tools required