A 3/4 Fernco coupling is the go-to choice for connecting pipes in tight or awkward plumbing situations. Made from durable, flexible rubber and secured with stainless steel clamps, Fernco fittings allow for easy, watertight joins between different materials like PVC, cast iron, and copper. Whether you're making repairs or installing a new line, these connectors are easy to install and ideal for non-pressurized drain, waste, and vent systems. The 3/4-inch size is especially useful in residential applications where small-diameter piping is common. Plumbers trust Fernco for its reliability, flexibility, and leak-free performance—even in challenging environments.