Irrigation Fittings
Every irrigation system is a network of pipe held together by fittings, and the right fitting depends heavily on what kind of pipe it's connecting. Mixing up fitting types — or using the wrong material for the job — is one of the more common causes of a leak showing up months after installation instead of immediately.
PVC fittings are built for rigid Schedule 40 and Schedule 80 pipe, which is the standard for mainlines and laterals buried below the frost line. PVC fittings solvent-weld to the pipe, creating a permanent, high-tolerance bond that holds up under constant underground pressure — the tradeoff being that a solvent-welded joint can't easily be taken apart once it's set.
Poly fittings serve flexible polyethylene pipe instead, which is common in zones where the ground shifts, in colder climates where pipe needs some give against freeze movement, or in DIY installs where flexibility makes routing around obstacles easier. Poly fittings use a barbed insert design secured with a stainless steel clamp rather than solvent welding, which makes them faster to install and easier to reconfigure than PVC.
Swing Assemblies solve a narrower but common problem: a sprinkler head mounted rigidly to the mainline is vulnerable to snapping off from a mower, a stray foot, or ground settling. A swing joint adds a flexible connection between the pipe and the head, letting it absorb impact and shift slightly without cracking the fitting underground. Repair Couplings handle the opposite scenario — fixing a break in an existing rigid line — using slip fixes, expansion couplings, or compression fittings that repair a section of pipe without needing to cut out and reglue a long run.
Not sure which fitting type your system needs? The Learn HUB has guides for diagnosing common irrigation leaks and matching fittings to pipe material.
