Which device provides a flexible connection between PVC piping and a sprinkler head to protect the sprinkler head?

Which device provides a flexible connection between PVC piping and a sprinkler head to protect the sprinkler head?

• A. Elbow
• B. Coupling
• C. Swing Joint
• D. Union

Answer: (C)

A swing joint provides a flexible connection between PVC piping and a sprinkler head to protect the sprinkler head. It allows a short, swiveling section between the hard pipe and the head, so the head can move slightly without transferring stress to the rigid PVC. This absorbs changes from soil movement, ground settling, or mowing impacts and reduces the risk of cracks, leaks, or misalignment when the head is serviced. The other fittings are rigid: elbows change direction rigidly, couplings join pipes without flexibility, and unions connect sections but don’t allow the head to flex. The swing joint’s flexibility is what shields the head from damage and makes maintenance easier.

A swing joint provides a flexible connection between PVC piping and a sprinkler head to protect the sprinkler head. It allows a short, swiveling section between the hard pipe and the head, so the head can move slightly without transferring stress to the rigid PVC. This absorbs changes from soil movement, ground settling, or mowing impacts and reduces the risk of cracks, leaks, or misalignment when the head is serviced. The other fittings are rigid: elbows change direction rigidly, couplings join pipes without flexibility, and unions connect sections but don’t allow the head to flex. The swing joint’s flexibility is what shields the head from damage and makes maintenance easier.