Editorial Review This Orbit 3 port manifold bundle is specifically designed for 3/4" poly pipe sprinkler systems. It is a simple and easy way to install a poly pipe 3 valve sprinkler manifold system. No tools are required, just hand-tighten each of the Orbit manifold adapters to the manifold and the other end to the valve. These Orbit manifold fittings have heavy duty O-rings that ensure a watertight connection. This bundle includes the following: One - 3 port manifold (Orbit part # 57183), 6 - manifold swivel adapters (Orbit part # 57199) for connecting sprinkler valves to the manifold, 2 - 3/4 in. poly manifold adapters (Orbit part # 57188) which are used to connect the manifold to 3/4" poly pipe from the valve lines, 1- manifold cap (Orbit part # 57197) and 1- 1 in. to 3/4 in. PVC manifold slip swivel adapter (Orbit part # 57202) used to connect the manifold assembly to the main incoming PVC line.