Schedule 80 PVC unions are used to connect pipes with the same sized diameters. Their light-weight design makes them easy to work with and quite affordable, and they come in diameters ranging from 1/4 of an inch to 4 inches, with both slip socket and threaded sockets available.
One benefit of choosing Schedule 80 PVC unions is the smooth interior of these fittings. They create minimal friction, so the rate and pressure of flow is not impacted with the addition of the union to the system. They are also resistant to damage from temperature extremes and corrosion, so they can be used outdoors, both in underwater and underground applications. Schedule 80 PVC can also withstand high pressures and temperatures, so they can be used in everything from irrigation to home plumbing.