Which connector is used to join PVC pipe with PE drip tubing?

• A. Barbed male elbow
• B. Threaded elbow
• C. Compression adapter
• D. Barbed male adapter

Answer: (C)

Joining PVC pipe with PE drip tubing requires a connector that can handle two very different materials and still seal reliably. A compression adapter does just that: it uses a compression nut and ferrule (or gasket) to tighten around the flexible PE tubing while the other end mates with the PVC pipe. As you tighten, the sleeve or gasket compresses around the PE tube, creating a tight, leakproof transition without heat, solvent welding, or clamps perched on a barb. This type of fitting is specifically designed for connecting dissimilar materials, accommodating the rigidity of PVC and the softness of PE drip tubing, and it remains secure under irrigation pressures. Barbed or threaded fittings, by contrast, aren’t as well-suited for PVC-to-PE transitions and often require clamps or aren’t compatible with both materials, making them less reliable in this scenario.