Solvent weld this PVC Compression Ring to one end of a 1/2 in. PVC slip fitting (sold separately) to form a leakproof adapter that transitions from 1/2 in. pipe to 250 Series supply tubing or dripline (0.250 in. OD). The orange compression ring has an internal barb that compresses into tubing to hold it in place. Compression ring is made of PVC and treated with UV inhibitors to prevent fading and cracking.