$2.55
Irritec Perma-Loc hose fittings are a reliable and versatile way to connect to poly tubing. Based on a spin-lock design they provide easy installation, a reliable grip, and can be removed and reused if needed.
Use the 1/2" (18 mm) Barbed Coupling With Valve to insert a point in your 1/2" tubing lateral or dripline where flow can be restricted or shut off. Tubing ID can range from .590" to .630".