[Charlie_Iliff]

In one run of 2" black roll plastic, we used connectors that have a thin sleeve inside and outside compression collars with a barbed ring to hold the pipe in. I don't know the name, but pros around here say they prevent the number one cause of failure - bad hose clamp joints. Some swear that heating and clamping works fine, but I've seen that fail. The compression fittings are more expensive, but if you save one leak, they're cheap.