1″ X 1″ DURA O-ring Swivel ( SWV X INSERT)
Allows you to connect the control valve to the poly pipe.
O-ring Fittings are an excellent glue & teflon free alternative to glue-on PVC manifolds.
They also make for easy maintenance and service. If a valve is faulty and needs to be replaced, the fittings can simply be unscrewed and the valve replaced. With glue-on PVC, often the whole manifold needs to be cut out and replaced.