Schedule 40 PVC unions join two pieces of PVC pipe together. Unlike a coupling, however, unions are able to be disassembled for quick access to the pipe itself. Unions are commonly used to allow quick access to a piece of pipe allowing users to quickly add and remove components or clean out the line. Unions are composed of three parts: a female end, a male end, and a nut. The female and male end attaches to the pipe and the nut is tightened to prevent leakage. If you don't see the product you are looking for on our site, please use our Contact Form.